Mr Gasket 2557 Water Neck | VIBE Motorsports

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- 2557

Item # BCZG2557

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$59.74 / unit

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Thermostat Housing

Water Neck

Water Neck; w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit;

Specifications

Item Weight: 1.000 lbs.
WARNING CA Proposition 65: Yes
WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Features

Prevents Water Leaks
Precision Die Cast

Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Using his own '57 Chevy as a rolling test bed, drag racer Joe Hrudka launched the most famous gasket company in the world more than half a century ago. Building a name for himself and his company competing at Cleveland-area tracks Norwalk and Dragway 42, Hrudka quickly established Mr. Gasket as the go-to gasket source for racers with a line of head gaskets, exhaust gaskets, oil pan gaskets, and fasteners that sealed perfectly every time and withstood the punishing temperatures and pressures of racing. Now an important part of Holley Performance, Mr. Gasket continues to expand application coverage with more and more new products for race cars and muscle cars alike. Beyond the gaskets that made the Mr. Gasket brand what it is today is an endless variety of high-performance parts, including carburetor and fuel system components, chrome-plated accessories to dress up your engine bay, fuel additives, shifter accessories, cooling-system accessories, specialty tools, and a wide array of heavy-duty suspension and driveline components.

Manufacturer Part Number

MPN: 2557

Vehicle Fitment

Year	Make	Model	Trim	Engine	Note
Year	Make	Model	Trim	Engine	Note
Year	Make	Model	Trim	Engine	Note
1979	Buick	Century	Custom Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Wagon 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Custom Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Limited Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Limited Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Limited Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Limited Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Wagon 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Special Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Century	Sport Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	225 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	225 Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	225 Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	225 Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Limited Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Limited Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Limited Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Limited Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Park Avenue Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Park Avenue Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Park Avenue Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Electra	Park Avenue Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Estate Wagon	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Estate Wagon	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Base Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Limited Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Limited Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Limited Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	LeSabre	Limited Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Regal	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Regal	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Regal	Limited Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Regal	Limited Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Riviera	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Riviera	S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Buick	Skylark	S Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	DeVille	Base Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	DeVille	Base Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	DeVille	Cabriolet Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	DeVille	d'Elegance Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	DeVille	Phaeton Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Eldorado	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Eldorado	Biarritz Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Eldorado	Cabriolet Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Fleetwood	Base Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Fleetwood	Base Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Fleetwood	Brougham d'Elegance Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Fleetwood	Brougham Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Fleetwood	Formal Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Seville	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Cadillac	Seville	Elegante Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Custom Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Berlinetta Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Berlinetta Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Z28 Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Camaro	Z28 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Classic Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Caprice	Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Corvette	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Corvette	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	Royal Knight Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	Royal Knight Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Nomad Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Nomad Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Impala	Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K20 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Estate Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Estate Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Landau Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Landau Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sport Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Classic Sport Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Estate Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Estate Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Landau Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Landau Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Police Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Police Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Sport Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Malibu	Sport Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monte Carlo	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monte Carlo	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	2+2 Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	2+2 Sport Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	2+2 Spyder Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	Base Wagon 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Monza	S Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Rally Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Chevrolet	Nova	Rally Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Heavy Half Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Heavy Half Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Heavy Half Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Street Coupe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Street Coupe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Street Coupe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500	Street Coupe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C1500 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C2500 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	C3500	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Diablo Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Diablo Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Laredo Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Caballero	Laredo Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally STX Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Rally STX Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Vandura Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Vandura Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G1500	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Rally STX Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G2500	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Magnavan Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Magnavan Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally Camper Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally Camper Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally STX Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Rally STX Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Vandura Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Vandura Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	G3500	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Base Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Base Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Base Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	High Sierra Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Street Coupe Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Street Coupe Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	Jimmy	Street Coupe Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K1500 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K2500 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	GMC	K3500	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Luxury Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Luxury Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Luxury Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Luxury Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Regency Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Regency Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Regency Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	98	Regency Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Brougham Wagon 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Brougham Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Brougham Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Calais	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Calais	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Calais	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	442 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Brougham Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Brougham Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Salon	Hurst Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Delta 88	Royale Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham LS Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham LS Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Omega	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Starfire	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Starfire	Firenza Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Starfire	GT Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Starfire	SX Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Toronado	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Oldsmobile	Toronado	XSR Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Brougham Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Brougham Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Safari Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Bonneville	Safari Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Catalina	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Catalina	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Catalina	Safari Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Catalina	Safari Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Firebird	Formula Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1979	Pontiac	Firebird	Trans Am Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Custom Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Limited Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Limited Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Special Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Special Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Special Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Century	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	225 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	225 Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	225 Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	225 Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Limited Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Limited Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Limited Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Limited Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Park Avenue Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Park Avenue Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Park Avenue Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Electra	Park Avenue Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Estate Wagon	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Estate Wagon	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	LeSabre	Custom Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Regal	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Regal	Limited Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Riviera	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Riviera	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Riviera	LXXV Anniversary Edition Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Riviera	LXXV Anniversary Edition Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	S Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Sport Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Buick	Skylark	Sport Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	Base Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	Base Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	Cabriolet Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	d'Elegance Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	d'Elegance Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	Phaeton Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	DeVille	Phaeton Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Eldorado	Base Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Eldorado	Biarritz Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Eldorado	Cabriolet Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Fleetwood	Base Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Fleetwood	Base Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Fleetwood	Brougham d'Elegance Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Fleetwood	Brougham Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Fleetwood	Formal Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Seville	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Seville	Elegante Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Cadillac	Seville	Opera Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Big Ten Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Custom Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	LT Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	LT Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	LT Rally Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	LT Rally Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Camaro	Z28 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Estate Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Estate Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Caprice	Classic Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Corvette	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Corvette	Indianapolis 500 Pace Car Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Corvette	Silver Anniversary Edition Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	Conquista Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	Conquista Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Nomad Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Nomad Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Impala	Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Silverado Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Silverado Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Silverado Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	K5 Blazer	Silverado Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Estate Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Estate Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Malibu	Classic Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monte Carlo	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monte Carlo	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	2+2 Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	2+2 Sport Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	2+2 Spyder Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	Base Wagon 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	S Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Monza	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Police Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Police Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Rally Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Chevrolet	Nova	Rally Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Heavy Half Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Heavy Half Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Heavy Half Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Street Coupe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Street Coupe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Street Coupe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15	Street Coupe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Diablo Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Diablo Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Laredo Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Caballero	Laredo Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally STX Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Vandura Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Vandura Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G15	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Rally STX Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G25	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Magnavan Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Magnavan Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally Camper Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally Camper Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally STX Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Rally STX Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	G35	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Base Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Base Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Base Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	High Sierra Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Street Coupe Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Street Coupe Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	Jimmy	Street Coupe Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	GMC	K35	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Luxury Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Luxury Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Luxury Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Luxury Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Regency Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Regency Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Regency Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	98	Regency Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Calais	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Calais	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	442 Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Brougham Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Salon	Brougham Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Supreme	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Delta 88	Royale Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham LS Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham LS Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	SX Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	SX Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	SX Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Omega	SX Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Starfire	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Starfire	Firenza Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Starfire	GT Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Starfire	SX Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Toronado	Brougham Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1978	Oldsmobile	Toronado	XSR Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Century	Custom Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	225 Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Electra	Limited Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Estate Wagon	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Estate Wagon	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sport Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sport Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	LeSabre	Custom Sport Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	SR Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	SR Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Regal	SR Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Riviera	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Riviera	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Riviera	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Hatchback 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	S Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	S Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Coupe 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Hatchback 2-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Sedan 4-Door	4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Buick	Skylark	SR Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	DeVille	Base Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	DeVille	Base Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	DeVille	d'Elegance Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	DeVille	d'Elegance Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Eldorado	Base Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Eldorado	Biarritz Coupe 2-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Fleetwood	75 Formal Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Fleetwood	75 Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Fleetwood	75 Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Fleetwood	Brougham Sedan 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Fleetwood	Formal Limousine 4-Door	7.0L 425Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Seville	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Cadillac	Seville	Opera Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Custom Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C10 Suburban	Silverado Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Custom Deluxe Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Scottsdale Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C20 Suburban	Silverado Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	C30	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	LT Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	LT Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	LT Rally Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	LT Rally Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	Rally Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Camaro	Z28 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Estate Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Estate Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Caprice	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Corvette	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Conquista Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	Conquista Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	El Camino	SS Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G10	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Beauville Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Chevy Van Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Sportvan Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G20	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Beauville Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Chevy Van Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Hi-Cube Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	G30	Sportvan Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Base Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Custom Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Custom Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Impala	Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K10 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Custom Deluxe Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Scottsdale Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Silverado Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Silverado Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K20 Suburban	Silverado Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Cheyenne Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Custom Deluxe Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Scottsdale Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K30	Silverado Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Cheyenne Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	K5 Blazer	Custom Deluxe Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Base Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Landau Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Landau Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Landau Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Wagon 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Classic Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Malibu	Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monte Carlo	S Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monte Carlo	S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	2+2 Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	2+2 Spyder Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	Mirage Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	Towne Coupe Cabriolet Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	Towne Coupe Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Monza	Towne Coupe Sport Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Concours Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Police Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Police Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Rally Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Rally Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Rally Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Chevrolet	Nova	Rally Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Heavy Half Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Heavy Half Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Heavy Half Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Heavy Half Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Indy Hauler Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Indy Hauler Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Indy Hauler Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C15 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C25 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally Standard Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally STX Extended Passenger Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Vandura Extended Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Vandura Standard Cargo Van 3-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G15	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Rally STX Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G25	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Magnavan Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Magnavan Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally Camper Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally Camper Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally STX Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Rally STX Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	G35	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Base Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Base Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Base Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	High Sierra Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Indy Hauler Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Indy Hauler Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Cab & Chassis 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Base Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Extended Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Extended Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	K35	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Sprint	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Sprint	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Sprint	Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	GMC	Sprint	Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Luxury Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Luxury Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Luxury Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Luxury Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Regency Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Regency Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Regency Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	98	Regency Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Custom Cruiser	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	442 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade S Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade S Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Colonnade Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	S Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Base Wagon 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Base Wagon 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Brougham Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Cutlass Supreme	Colonnade Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Base Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Delta 88	Royale Sedan 4-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Sedan 4-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Deluxe Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Deluxe Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	Deluxe Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	F85 Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	F85 Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	F85 Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Coupe 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Omega	SX Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Starfire	Base Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Starfire	Firenza Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Starfire	GT Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Starfire	SX Hatchback 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Toronado	Brougham Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Toronado	XS Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Oldsmobile	Toronado	XSR Coupe 2-Door	6.6L 403Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Brougham Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Brougham Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Brougham Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Bonneville	Brougham Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Catalina	Safari Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Esprit Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Esprit Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Formula Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Firebird	Formula Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand LeMans	Safari Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand Prix	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand Prix	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand Prix	LJ Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand Prix	LJ Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Grand Safari	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Safari Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Sport Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	LeMans	Sport Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Phoenix	Base Sedan 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Phoenix	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	Base Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	SJ Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	SJ Hatchback 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1977	Pontiac	Ventura	SJ Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Cab & Chassis 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Crew Cab Pickup 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	C35	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G15	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Extended Passenger Van 3-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally Standard Passenger Van 3-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally STX Extended Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally STX Extended Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Rally STX Extended Passenger Van 3-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G25	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Magnavan Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Magnavan Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Magnavan Cutaway Van 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally Camper Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally Camper Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally STX Standard Passenger Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Rally STX Standard Passenger Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Extended Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Extended Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Special Cutaway Van 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Special Cutaway Van 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Standard Cargo Van 3-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	G35	Vandura Standard Cargo Van 3-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Base Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Base Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Base Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	High Sierra Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	High Sierra Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	High Sierra Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Classic Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Jimmy	Sierra Grande Sport Utility 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K15 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Base Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	High Sierra Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Classic Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Cab & Chassis 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Cab & Chassis 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Cab & Chassis 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25	Sierra Grande Standard Cab Pickup 2-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Base Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Base Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Base Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	High Sierra Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Classic Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	K25 Suburban	Sierra Grande Sport Utility 4-Door	7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Base Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Base Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Base Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Classic Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Classic Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Classic Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Sierra Madre Del Sur Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Sierra Madre Del Sur Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	Sierra Madre Del Sur Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	SP Standard Cab Pickup 2-Door	5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	SP Standard Cab Pickup 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	GMC	Sprint	SP Standard Cab Pickup 2-Door	6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	Colonnade S Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	Colonnade S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	Colonnade S Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	Colonnade S Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	S Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	S Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	S Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	S Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass	Vista Cruiser Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Salon	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Salon	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Base Wagon 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Base Wagon 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Colonnade Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Colonnade Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Colonnade Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Supreme	Colonnade Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Tiara	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Cutlass Tiara	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Delta 88	Base Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Delta 88	Base Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Delta 88	Royale Coupe 2-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Delta 88	Royale Sedan 4-Door	5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Hatchback 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Hatchback 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Sedan 4-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	Brougham Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	F85 Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	F85 Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	SX Coupe 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	SX Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	SX Hatchback 2-Door	4.3L 260Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Oldsmobile	Omega	SX Hatchback 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Catalina	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Catalina	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Firebird	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Firebird	Esprit Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Firebird	Formula Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Grand LeMans	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Grand LeMans	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Grand LeMans	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Grand Prix	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	LeMans	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	LeMans	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	LeMans	Base Wagon 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	LeMans	Sport Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	Base Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	Base Hatchback 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	Base Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	SJ Coupe 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	SJ Hatchback 2-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit
1976	Pontiac	Ventura	SJ Sedan 4-Door	5.7L 5733CC 350Cu. In. V8 GAS OHV Naturally Aspirated	w/Bolts And O-Ring; 0.5 in. Vacuum Switch Hole; Check To Insure Correct Fit

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