#zz6

A pair of high-flow, Fast Burn-style aluminum cylinder heads, with large intake runners and 2.00/1.55-inch valves, enable the ZZ6 to flow big air, while the beehive-style valve springs offer exceptional high-rpm performance and durability. The unique, tapered shape of the valve spring allows for the use of a smaller spring retainer, which reduces the reciprocating mass of the valvetrain resulting in better valve dynamics.

The ZZ6 also uses an aggressive hydraulic roller camshaft, with .474/.510-inch lift and 208/221-degrees duration, that supports the engine’s high-rpm airflow capability, while maintaining excellent low-speed drivability. Rounding out the rotating assembly is a forged steel crankshaft and durable, quiet high-silicon aluminum pistons housed in a four-bolt-main cast iron block.

A pair of all-new, aluminum valve covers caps off the new crate engine, giving it a distinctive, premium appearance.

Chevrolet Performance offers the ZZ6 crate engine in Turn Key and Base versions. The Base kit includes a single-plane aluminum intake, distributor, water pump, damper and flexplate, but requires the carburetor and other accessories to be added.  

The Turn Key kit includes the carburetor, an air cleaner that matches the unique valve covers, the starter, distributor, alternator and additional accessories such as the air conditioning compressor and front-end accessory drive system.