Chevrolet Performance 502 C.I.D. HO 461 HP Long Block Crate Engines 19433157

This new Chevrolet Performance 502 HO long block (part 19433157) is an 8.2L big-block built with a cast-iron block and cast-iron cylinder heads at an 8.75:1 compression ratio. Chevrolet Performance rates output at 461 horsepower, with 558 lb-ft of torque on tap for serious street and strip use.

What comes assembled

The carbureted intake manifold, oil pan, valve covers, and timing cover are factory-installed, along with a long-style water pump, harmonic balancer, flexplate for automatic transmissions, and spark plugs. Left out are the carburetor, ignition components, exhaust headers, and the rest of the fuel system, so budget for those before the engine can run. Engine balance is external, and the camshaft is a hydraulic roller design.

Matching the build to the engine

This big-block suits classic muscle car swaps, high-performance trucks, drag racing, and off-road builds where big displacement matters more than fuel economy, and it is compatible with aftermarket carburetors and fuel systems for custom tuning. Premium fuel at 91 octane or higher is recommended.

Common questions

Does this come with an ECU or wiring harness? No - it runs on carburetor and distributor logic rather than a computer, so neither one is needed. Can it run forced induction? It does not include a supercharger or turbocharger, but the architecture is compatible with aftermarket forced-induction setups if you plan to add one later. What transmission does it pair with? The included flexplate is sized for automatic transmissions; manual-transmission builders will need a flywheel instead.

Specifications