ZZ502 Base Kit, with Aluminum Heads

Build-it-yourself kit of GM Performance Parts' 502 Rat! Nothing is quite as satisfying as building your own high-performance big-block. That's why GM Performance Parts offers the entire ZZ502 engine as a kit. Every part is engineered to work together to deliver 502 horses! Kit includes aluminum oval-port heads, forged steel crank and rods, and forged aluminum pistons. It also includes a hydraulic roller cam, valvetrain and valve covers. You need to add an intake manifold, carburetor, water pump, distributor and spark plug wires all available from your GM Performance Parts dealer.

NOTE: Designed for pre'1979 street vehicles or any off-road vehicle. Not intended for marine applications.