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Access GMC  wiring diagrams and repair procedures. Learn how to repair, install or remove a part, reset engine lights...
 
GMC 454 Engine (V8, 454 cid, 7.4L)
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This GMC 454/7.4L engine/motor can fit the P35/P3500 Van, P15/P1500 Van, K25/K2500 Suburban, G35/G3500 Van, G15/G1500 Van, G25/G2500 Van, Sprint, C25/C2500 Pickup, C35/C3500 Pickup, C15/C1500 Pickup, Jimmy, C25/C2500 Suburban, C15/C1500 Suburban, K25/K2500 Pickup, K35/K3500 Pickup and some other GMC car and/or truck applications - for more details see your automobile manual.

1998 - 2000

1999 GMC 454 Fuel injection, one piece rear main seal. Roller Cam Vortec
Engine DescriptionSizeVINPrice/Core
1999 GMC 454 Fuel injection, one piece rear main seal. Roller Cam Vortec

454/7.4LJ$2,099/$700
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1998-1999 GMC 454 Motorhome engine, fuel injection, one piece rear main seal. Roller Cam
Engine DescriptionSizeVINPrice/Core
1998-1999 GMC 454 Motorhome engine, fuel injection, one piece rear main seal. Roller Cam

454/7.4LB$2,485/$700
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1997

1997 GMC 454
Engine DescriptionSizeVINPrice/Core
1997 GMC 454 

454/7.4LJ$6,370
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1996

1996 GMC 454
Engine DescriptionSizeVINPrice/Core
1996 GMC 454 

454/7.4LJ, Y$6,370
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1997 GMC 454 SFI, flat lifters, bolt down rocker arms
Engine DescriptionSizeVINPrice/Core
1997 GMC 454 SFI, flat lifters, bolt down rocker arms

454/7.4LN$2,104/$700
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1998 GMC 454 Fuel injection, one piece rear main seal. Roller Cam Vortec
Engine DescriptionSizeVINPrice/Core
1998 GMC 454 Fuel injection, one piece rear main seal. Roller Cam Vortec

454/7.4LJ, B$2,099/$700
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1991 - 1995

1991 GMC 454 Fuel injection, with detonation sensor, one piece rear main seal.
Engine DescriptionSizeVINPrice/Core
1991 GMC 454 Fuel injection, with detonation sensor, one piece rear main seal.

454/7.4LN$1,965/$700
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1990

1990 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.
Engine DescriptionSizeVINPrice/Core
1990 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.

454/7.4LN, W$1,850/$600
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1987 - 1990

1987 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.
Engine DescriptionSizeVINPrice/Core
1987 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.

454/7.4LN$1,850/$600
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1986 - 1989

1986 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.
Engine DescriptionSizeVINPrice/Core
1986 GMC 454 Light truck, 2 bolt main, TBI, 2-piece rear main seal.

454/7.4LW, N$1,850/$600
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1974 - 1980

1974 GMC 454 Motorhome engine.
Engine DescriptionSizeVINPrice/Core
1974 GMC 454 Motorhome engine.

454/7.4LZ$1,938/$600
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1973 - 1985

1973 GMC 454 Light truck.
Engine DescriptionSizeVINPrice/Core
1973 GMC 454 Light truck.

454/7.4LX$1,796/$600
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1970 - 1972

1970 GMC 454 Passenger cars and light truck.
Engine DescriptionSizeVINPrice/Core
1970 GMC 454 Passenger cars and light truck.

454/7.4L$1,767/$600
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For troubleshooting tips and repair information on the GMC 454/7.4L engine, please visit our Information page.