SKU: GMP19433162
MPN: 19433162
The Chevrolet Performance ZZ502/508HP is a complete 502 crate engine built for hot rodders, street rod builders, and sportsman racers who want big-block torque without sourcing parts piece by piece. This 502 big block engine displaces 502 cubic inches and produces 508 horsepower at 5,200 rpm with 580 ft-lbs of torque at 3,600 rpm, per Chevrolet Performance documentation. It ships as a dressed long-block with carburetor, distributor, starter, and ignition wiring already fitted. For builders shopping a Chevy big block 502 that runs on pump gas, this is one of the most proven combinations available. Pair it with the right oiling system and you're close to a turn-key install.
The foundation is a cast-iron block with four-bolt main caps, a forged steel crankshaft, forged aluminum pistons, and shot-peened forged steel connecting rods running 7/16-inch bolts. Aluminum oval-port cylinder heads use 110cc chambers with 2.25-inch intake and 1.88-inch exhaust stainless steel valves, fed through an aluminum intake manifold and an included Holley 870-cfm carburetor. A hydraulic roller camshaft specs out at .527-inch intake and .544-inch exhaust lift, with 224 degrees intake and 234 degrees exhaust duration at .050-inch. Compression sits at 9.6:1 on a 4.470-inch bore and 4.000-inch stroke. A six-quart oil pan with windage tray, a short-style aluminum water pump, and stamped steel 1.7:1 rocker arms round out the package. The assembly is externally balanced. Builders adding capacity can browse big-block windage trays and related hardware.
This 502 bbc is built for pre-1976 street vehicles or any off-road application, and it is not intended for marine use. It arrives configured for automatic transmissions with a 14-inch flexplate; manual setups require flywheel part number 14096987 and an 11-inch clutch. Premium 92-octane pump fuel is recommended, with a maximum recommended engine speed of 5,800. Whether you're dropping it into a muscle car restoration or a strip-bound project, the ZZ502 gives you a documented power figure and a GM engine warranty. When you're ready to finish the build, see our full lineup of engine parts and components and dedicated big-block Chevy oil pans.
The ZZ502 produces 508 horsepower at 5,200 engine speed and 580 ft-lbs of torque at 3,600, according to Chevrolet Performance documentation. It runs on 92-octane premium pump fuel and carries a maximum recommended engine speed of 5,800, making it suited to high-performance street or strip use.
It ships as a dressed long-block with the Holley 870-cfm carburetor, ignition distributor, ignition wires, spark plugs, a lightweight gear-reduction starter, and a six-quart oil pan with windage tray already fitted. You'll still supply external accessories, cooling, exhaust, and the transmission setup to complete the install.
The engine comes configured for automatic transmissions with a 14-inch flexplate. For a manual setup, you'll need flywheel part number 14096987 and an 11-inch clutch. The crankshaft is externally balanced, so any flexplate or flywheel must match that balance specification.
Chevrolet Performance lists this engine for pre-1976 street vehicles or any off-road application. It is not intended for marine use. Builders typically install it in muscle car restorations, street rods, hot rods, and sportsman race cars with a chassis built to handle 580 ft-lbs of torque.
Displacing 502 cubic inches, the engine uses a 4.470-inch bore and 4.000-inch stroke with a 9.6:1 compression ratio. That compression keeps it compatible with 92-octane premium pump fuel while supporting the rated 508 horsepower output.
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