471+ 1978 GMC Jimmy Engine & Drivetrain Parts - Page 4

Engine & Drivetrain (471 products)

Eaton

Part # 19556-010

Fits All Trims

Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 3.73 & Up Ratio Rear 8.875in

$765.77

Cometic Chevrolet Gen-3 Inline 6 .060in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Gasket

Part # C5699-060

Fits All Trims

Cometic Chevrolet Gen-3 Inline 6 .060in MLS Cylinder Head Gasket - 4.125in Bore

$229.63

Edelbrock

Part # 4649

Fits All Trims

Edelbrock Valve Cover Signature Series Chevrolet 1959-1986 262-400 CI V8 Tall Chrome

$76.95

Edelbrock

Part # 4243

Fits All Trims

Edelbrock Gasket Kit for 4242

$53.93

Edelbrock

Part # 6950

Fits All Trims

Edelbrock Gasket 7110 (5Pr)

$41.45

Cometic Chevrolet Gen-3 Inline 6 .036in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Gasket

Part # C5699-036

Fits All Trims

Cometic Chevrolet Gen-3 Inline 6 .036in MLS Cylinder Head Gasket - 4.125in Bore

$193.01

COMP Cams

Part # CL61-233-4

Fits All Trims

COMP Cams Cam & Lifter Kit C61 260H

$428.95

Sealed Power

Part # 4663M

Fits All Trims

Engine Crankshaft Main Bearing Set

$57.02

Cometic Chevrolet Gen-3 Inline 6 .080in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Gasket

Part # C5699-080

Fits All Trims

Cometic Chevrolet Gen-3 Inline 6 .080in MLS Cylinder Head Gasket - 4.125in Bore

$240.00

Steel Cup Expansion Plug 2-3/32 In., SC, Height 0.278

Dorman

Part # 555-049

Fits All Trims

Steel Cup Expansion Plug 2-3/32 In., SC, Height 0.278

$24.47

MAHLE Original Buick Apollo 75-73 Timing Cover Set

Victor Reinz

Part # JV862

Fits All Trims

MAHLE Original Buick Apollo 75-73 Timing Cover Set

$26.70

Dorman

Part # 929-839

Fits All Trims

U-Bolt Repair Kit

$73.04

ATP

Part # 102045

Fits All Trims

ATP Engine Harmonic Balancer

$98.44

COMP Cams

Part # 7136CPG

Fits All Trims

COMP Cams Billet Timing Set CS OE Roller Keyway Adjustable

$159.14

Edelbrock

Part # 2103

Fits All Trims

Edelbrock Perf Plus Cam and Lifters Kit SBC 400

$396.66

Fel-Pro

Part # 2601016

Fits All Trims

Fel-Pro Chevrolet Chevelle 260-1016 Engine Gasket Set

$85.64

Edelbrock

Part # 19063

Fits All Trims

Edelbrock Carburetor Thunder AVS2 Series 650 CFM Electric Choke Black Powder Coated (Non-EGR)

$594.72

COMP Cams

Part # K61-246-4

Fits All Trims

COMP Cams Camshaft Kit C61 280H

$603.87

Edelbrock

Part # 2098

Fits All Trims

Edelbrock 410Hp Total Power Package Top-End Kit 1955 And Later SB-Chevy

$4411.61

Cometic Chevrolet Gen-3 Inline 6 .070in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Gasket

Part # C5699-070

Fits All Trims

Cometic Chevrolet Gen-3 Inline 6 .070in MLS Cylinder Head Gasket - 4.125in Bore

$229.63

Frequently Asked Questions

Do these parts fit my 1978 GMC Jimmy?

This page groups parts listed for the 1978 GMC Jimmy. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.

What engine & drivetrain options are available for my 1978 GMC Jimmy?

We offer a wide selection of engine & drivetrain parts for the 1978 GMC Jimmy. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.

What brands make parts for the 1978 GMC Jimmy?

We carry parts from trusted brands including Mahle OE, Clevite, COMP Cams, Fel-Pro, and Edelbrock, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 1978 GMC Jimmy parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 1978 GMC Jimmy parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

1978 GMC Jimmy(2,244 parts)

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Other GMC Jimmy Years

1978 GMC Jimmy(2,244 parts)

Shop by Problem

Other GMC Jimmy Years

Engine & Drivetrain (471 products)

Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 3.73 & Up Ratio Rear 8.875in

Cometic Chevrolet Gen-3 Inline 6 .060in MLS Cylinder Head Gasket - 4.125in Bore

Edelbrock Valve Cover Signature Series Chevrolet 1959-1986 262-400 CI V8 Tall Chrome

Edelbrock Gasket Kit for 4242

Edelbrock Gasket 7110 (5Pr)

Cometic Chevrolet Gen-3 Inline 6 .036in MLS Cylinder Head Gasket - 4.125in Bore

COMP Cams Cam & Lifter Kit C61 260H

Engine Crankshaft Main Bearing Set

Cometic Chevrolet Gen-3 Inline 6 .080in MLS Cylinder Head Gasket - 4.125in Bore

Steel Cup Expansion Plug 2-3/32 In., SC, Height 0.278

MAHLE Original Buick Apollo 75-73 Timing Cover Set

U-Bolt Repair Kit

ATP Engine Harmonic Balancer

COMP Cams Billet Timing Set CS OE Roller Keyway Adjustable

Edelbrock Perf Plus Cam and Lifters Kit SBC 400

Fel-Pro Chevrolet Chevelle 260-1016 Engine Gasket Set

Edelbrock Carburetor Thunder AVS2 Series 650 CFM Electric Choke Black Powder Coated (Non-EGR)

COMP Cams Camshaft Kit C61 280H

Edelbrock 410Hp Total Power Package Top-End Kit 1955 And Later SB-Chevy

Cometic Chevrolet Gen-3 Inline 6 .070in MLS Cylinder Head Gasket - 4.125in Bore

Frequently Asked Questions

Do these parts fit my 1978 GMC Jimmy?

What engine & drivetrain options are available for my 1978 GMC Jimmy?

What brands make parts for the 1978 GMC Jimmy?

How fast do 1978 GMC Jimmy parts ship?

What warranty do your 1978 GMC Jimmy parts come with?