What engine displacement powered the limited-production 1969 Chevrolet Camaro ZL1?

The limited-production 1969 Chevrolet Camaro ZL1 was powered by a 427-cubic-inch engine.

The ZL1 used an all-aluminum version of Chevrolet’s big-block 427 V8. The engine was related to Chevrolet’s racing technology and was exceptionally expensive, so the ZL1 package became one of the rarest and most powerful factory Camaro configurations of the first generation.

Chevrolet built the cars primarily to satisfy homologation requirements for drag racing. The official rating was 430 horsepower, though the engine’s racing potential and actual output were widely considered greater. The package included major performance hardware beyond the engine itself.

The ZL1 is often confused with the Camaro’s 396-cubic-inch big-block options, which were more common. It is also distinct from later ZL1 Camaros, including the fifth-generation model, which used a supercharged 6.2-liter V8 rather than the 1969 car’s aluminum 427.