GM-12681429

SKU: GM-12681429

Gen 1 5.7L crate engines are excellent entry-level performance engines for older cars, trucks, and street rods. All of the parts in these engines are brand new. These Chevrolet Performance Goodwrench 5.7L/350 c.i.d. engines have approximately 8.5:1 compression with a horsepower rating of 249 hp and 304 ft.-lbs. of torque. These crate engines have a 4.00 in. bore and a 3.48 in. stroke with 4-bolt mains and 2-piece rear main seals. Camshaft specifications are .383 in. intake lift and .401 in. exhaust lift. The open duration is 194 degrees intake and 202 degrees exhaust at .050 in. with a 112 degree lobe separation. The cylinder heads are cast iron with 1.94 in. intake valves and 1.50 in. exhaust valves, 76cc combustion chambers, and 7-bolt style exhaust flanges. These engines include painted valve covers, oil pans, and timing covers. They are drilled for both left hand and right hand dipsticks.

Dyno test numbers are from an independent test as reported by Hot Rod Magazine using a GM cast iron Quadrajet intake, Quadrajet carburetor, HEI distributor and 1-5/8 in. long tube headers.

Out of Stock

Details

Brand:Chevrolet Performance
Part Number:12681429
Part Type:Crate Engines
  
Engine Assembly Style:Long block
Crate Engine Cylinder Head Material:Cast iron
Assembled:Yes
Engine Balance:Internal
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:No
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
Rear Main Seal Style:2-piece
Quantity:Sold individually.
Notes: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. Can be used in light duty pickups of 7200 GVW or less. Pilot bearing is installed for use with a manual transmission; remove if an automatic transmission is to be used.
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