GM Performance Engine Assembly, Crate Engine, TBI EFI Truck Replacement, Chevy 350 Goodwrench,
Part Number:GMP-12681430
GM Performance Engine Assembly, Crate Engine, TBI EFI Truck Replacement, Chevy 350 Goodwrench, 2-Bolt Main, Each (PART #GMP-12681430)
Direct from GM Performance come the GM GoodWrench replacement long block crate engines! They're 5.7L 350 c.i.d. assemblies for 1987-95 Chevy/GMC trucks with 350 VIN code "K" engines up to 7,200 GVRW. These are 2-bolt mains with one-piece rear seal factory replacement crate engines.
Engine specs:
- 1986 and up 2-bolt main one-piece crankshaft seal block (no mechanical fuel pump provision)
- Horsepower: 200 hp at 4,000 rpm
- Torque: 300 lbs.-ft. at 2,800 rpm
- Nodular iron crankshaft
- Powdered metal connection rods
- Dished hypereutectic pistons
- 9.25:1 compression ratio
- High-volume oil pump
- Morse link-type timing chain
Camshaft specs:
- Flat tappet hydraulic camshaft
- Intake lift .382 in.
- Exhaust lift .402 in.
- Intake duration at .050: 165.9
- Exhaust duration at .050: 174.8
- Lobe center separation: 111.9
- Camshaft mechanical specs
- Intake valve opens at -30.2 BTDC, closes at 16.1ATDC; intake lobe centerline: 111.8
- Exhaust valve opens at 18.1BBDC, closes at -23.3 ATDC; exhaust lobe centerline: 111.8
Cylinder head specs:
- Casting number 14102193
- Swirl port intake port design
- 64cc combustion chamber
- 1.94 in. intake valve, 1.50 in. exhaust valve
- Valve spring part number is 3911068 (same spring used with the old 300 hp 350 crate engine)
- Installed height 1.70 in. pressure at installed height is 80 lbs.; pressure with valve open is 267 lbs.
- These springs are good for .550 in. lift, but clearance between guide and retainer must be double-checked before attempting
- 7-bolt exhaust flange
- Centerbolt valve cover flange
- 1987-95 intake manifold bolt pattern with center intake bolts canted at 72 angle
- This is not a performance-oriented cylinder head. It is classified as a high swirl head intended for good bottom-end torque and fuel economy. The intake runner is restrictive because it has a ramp cast into the bottom of the bowl to promote high swirl.
Engine also includes:
- 4 qt. oil pan (5w/filter)
- Timing cover
- 8 in. balancer
- Valve covers
- It is recommended that you do not attempt to run this engine in a carbureted application because of the lack of a fuel pump provision. Special intake manifold is required.
SPECIFICATIONS |
|
| Brand | GM Performance |
| Manufacturer's Part Number | 12681430 |
| Part Type | Crate Engines |
| Product Line | GM Performance 350 C.I.D. VIN Code K Long Block Crate Engines |
| Actual Engine Displacement | 5.7L/350 |
| Crate Engine Cylinder Head Material | Cast iron |
| Engine Block Material | Cast iron |
| Assembled | Yes |
| Engine Balance | Internal/External |
| Cam Style | Hydraulic flat tappet |
| Rear Main Seal Style | 1-piece |
| Intake Manifold Included | No |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | No |
| Distributor Included | No |
| Oil Pan Included | Yes |
| Valve Covers Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Water Pump Style | Long |
| Supercharger Included | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | This two bolt main block engine is designed as a stock replacement for 1987-1995 C/K-Series TBI trucks with 7,200 GVW (or lower) , VIN code K, and is legal for sale and use in California for these same applications. This engine has the mechanical fuel pump boss cast into the block, but has not been drilled or machined out. This engine is not designed, nor intended to be used in any marine applications. Engines installed in vehicles registered and normally operated outside of the United States carry no warranty. |
