GM12496962. THIS IS A BRAND NEW GM ZZ502 PERFORMANCE ENGINE PACKAGE. The king of the crate engines! Unmatched in dollar value for horsepower and torque. The 502/502 crate engine from GM Performance Parts is the latest effort in the awe inspiring big block power for a dependable and drivable crate engine. Shipped fully assembled with a pair of aluminum big valve oval port heads. The premium kit contains everthing you need for a complete 502/502 engine. From carburetor to starter, and distributor to spark plugs you have all the necessary components to for a pavement pounding 502 horsepower big block. Fully assembled for easier installation in your hot rod, street rod or sportsman racer. Block: Gen VI Cast Iron, 4.468 in. Bore. Camshaft Duration @ 0.050 in. I/E: 224 / 234. Camshaft Type, Lift in. (I/E): Hydraulic Roller, 0.510 / 0.544. Compression Ratio: 9.6:1. Crankshaft: Forged Steel, 4.000 in. Stroke. Heads, Chamber Size: Aluminum Oval Port, 110cc. Horsepower: 502 @ 5200 RPM. Intake Manifold: Aluminum Dual Plane. Torque: 567 ft/lbs @ 4200 RPM. Valves (I/E) (in.): 2.250 / 1.880
