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#35512681431
GM 12681431 Replacement Long Block Vortec 5.7/350 Crate Engine
Discontinued
This item is currently not available
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Key Specs
| Crate Engine Type | Long Block |
| Compression Ratio | 9.4:1 |
| Engine Displacement | 350 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Cylinder Head Material | Cast Iron |
Need To Know
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Return PolicyGenuine GM Parts 12681431 Details
Genuine GM Parts 12681431 Details
Formerly GM Goodwrench, this Genuine GM Parts Replacement Engine is the Heavy Duty replacement engine direct from GM Powertrain and fits most 3/4 and 1-Ton G-Series Vans, P-Series Trucks, Silverados, Sierras, and Suburbans. Designed to fit 1996-2000 full size Chevy/GMC trucks and 1996-2002 Chevy/GMC full size vans. The Vortec HD version 350 uses a 4-Bolt main block, upgraded exhaust valves and cylinder heads for heavy duty applications. This engine is not intended for marine usage. Features new components, brand new complete long block engine backed by a limited 3-year, 100,000 mile GM warranty when installed into an approved GM application. This GM Replacement Crate Engine is perfect for budget conscious individuals that don't want to compromise quality!
- 1996-2000 style block, 4 bolt mains
- 1 piece rear seal nodular iron crankshaft
- Powdered metal connecting rods
- Hypereutectic pistons 9.4:1 compression Ratio
- Hydraulic roller camshaft: Int Lift .414", Exh Lift .428", Int
- Duration @.050" 191, Exh Duration @ .050" 196, Lobe Centerline-111
- Vortec cylinder heads - 64cc, 1.94'' intake valve, 1.50'' exhaust valve
- Electric fuel pump utilization is required as block does not have provision for mechancial fuel pump
- Also includes: Oil pan, timing cover, valve covers, harmonic balancer
Genuine GM Parts 12681431 Specifications
Genuine GM Parts 12681431 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 12681431 |
| Brand | Genuine GM Parts |
| Crate Engine Type | Long Block |
| Compression Ratio | 9.4:1 |
| Engine Displacement | 350 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Cylinder Head Material | Cast Iron |
| Piston Material | Hypereutectic Aluminum |
| Crankshaft Material | Nodular Iron |
| Carburetor Included | No |
| Intake Manifold Included | No |
| Distributor Included | No |
| Connecting Rod Material | Powdered Metal |
| Valve Covers Included | Yes |
| Engine Balance | Internal/External |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 1-piece |
| Timing Cover Included | Yes |
| Oil Pan Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Wiring Harness Included | No |
| GENERAL | |
| Camshaft Duration (.050 in) | 191° intake / 196° exhaust |
| Camshaft Lift (in) | .414 Intake / .428 Exhaust |
| Assembled | Yes |
| Cylinder Head Style | Assembled |
| Head Gaskets Included | Yes |
| Camshaft Included | Yes |
| Block | 4 bolt main |
| Notes | L31 replacement engine. Supersedes GM 12530283. |
| Sold in Quantity | Each |
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Fitment
Fitment
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1988-1995 Chevy C1500
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1992-1995 Chevy C1500 Suburban
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1986-1987 Chevy C20
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1986 Chevy C30
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1988-1995 Chevy C35
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1996-1999 Chevy C35
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1988-1995 Chevy C3500
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1996-1999 Chevy C3500
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1987-1991 Chevy Camaro
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1992 Chevy Camaro
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Gen 2 LT1 Small Block Chevy
1993-1995 Chevy Camaro
Gen 2 LT1 Small Block Chevy
1996-1999 Chevy Camaro
Gen 2 LT1 Small Block Chevy
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1986-1993 Chevy Caprice
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1994-1995 Chevy Caprice
Gen 2 LT1 Small Block Chevy
1996 Chevy Caprice
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1986-1991 Chevy Corvette
Gen 1 L98 Small Block Chevy
1992-1995 Chevy Corvette
Gen 2 LT1 Small Block Chevy
1996 Chevy Corvette
Gen 2 LT1 Small Block Chevy
Vortec L31 Small Block Chevy
1996-1999 Chevy Express 1500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1996 Chevy Express 2500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1997 Chevy Express 2500
Gen 2 LT1 Small Block Chevy
Vortec L31 Small Block Chevy
1998-1999 Chevy Express 2500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1996-1999 Chevy Express 3500
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1986-1993 Chevy G10
Gen 1 L05 Small Block Chevy
1986-1995 Chevy G20
Gen 1 L05 Small Block Chevy
1986-1995 Chevy G30
Gen 1 L05 Small Block Chevy
1996 Chevy G30
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1994-1995 Chevy Impala
Gen 2 LT1 Small Block Chevy
1996 Chevy Impala
Gen 2 LT1 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K10
Gen 1 L05 Small Block Chevy
1986 Chevy K10 Suburban
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K1500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K1500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1992-1995 Chevy K1500 Suburban
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K1500 Suburban
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K20
Gen 1 L05 Small Block Chevy
1986 Chevy K20 Suburban
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K2500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K2500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1992-1995 Chevy K2500 Suburban
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K2500 Suburban
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K30
Gen 1 L05 Small Block Chevy
1988-1995 Chevy K3500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy K3500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1986 Chevy K5 Blazer
Gen 1 L05 Small Block Chevy
1986-1995 Chevy P30
Gen 1 L05 Small Block Chevy
1996-1999 Chevy P30
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987 Chevy R10
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R10 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R1500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R20
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R20 Suburban
Gen 1 L05 Small Block Chevy
1995 Chevy R25
Gen 1 L05 Small Block Chevy
1996-1999 Chevy R25
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1989 Chevy R2500
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R2500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy R30
Gen 1 L05 Small Block Chevy
1989-1991 Chevy R3500
Gen 1 L05 Small Block Chevy
1995 Chevy Silverado
Gen 1 L05 Small Block Chevy
1996-1999 Chevy Silverado
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987-1994 Chevy Suburban
Gen 1 L05 Small Block Chevy
1995 Chevy Suburban 1500
Gen 1 L05 Small Block Chevy
1996-1999 Chevy Suburban 1500
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1995 Chevy Tahoe
Gen 1 L05 Small Block Chevy
1996-1999 Chevy Tahoe
Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy
1987 Chevy V10
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V10 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V1500 Suburban
Gen 1 L05 Small Block Chevy
1987 Chevy V20
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V20 Suburban
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V2500 Suburban
Gen 1 L05 Small Block Chevy
1987-1988 Chevy V30
Gen 1 L05 Small Block Chevy
1989-1991 Chevy V3500
Gen 1 L05 Small Block Chevy
1998-1999 GMC C1500
Vortec L31 Small Block Chevy
1992-1999 GMC C1500 Suburban
Vortec L31 Small Block Chevy
1987-1995 GMC G1500
Gen 1 L05 Small Block Chevy
1987-1995 GMC G2500
Gen 1 L05 Small Block Chevy
1987-1994 GMC G3500
Gen 1 L05 Small Block Chevy
1995-1996 GMC G3500
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1986 GMC Jimmy
Gen 1 L05 Small Block Chevy
1987 GMC Jimmy
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1988-1990 GMC Jimmy
Gen 1 L05 Small Block Chevy
1998-1999 GMC K1500
Vortec L31 Small Block Chevy
1981-1986 GMC K1500 Suburban
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1992-1999 GMC K1500 Suburban
Vortec L31 Small Block Chevy
1986 GMC K2500
Gen 1 L05 Small Block Chevy
1996-2000 GMC K2500
Vortec L31 Small Block Chevy
1992-1993 GMC K2500 Suburban
Gen 1 L05 Small Block Chevy
1987 GMC R1500 Suburban
Vortec L31 Small Block Chevy
1988-1991 GMC R1500 Suburban
Gen 1 L98 Small Block Chevy
1996-2000 GMC Savana 1500
Vortec L31 Small Block Chevy
1987-1991 GMC V1500 Suburban
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1987 GMC V2500
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1987-1991 GMC V2500 Suburban
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1992-2011 GMC Yukon
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