The ZZ6 EFI Turn-Key crate engine offers modern performance balanced with traditional style that looks period perfect in your vintage Chevy!
Chevrolet Performance engineers adapted a unique, electronically controlled port fuel injection system to the ZZ6 350, using an aluminum intake manifold that has the appearance of a carbureted intake. A fuel injection throttle body mounted in place of the carburetor allows a traditional air cleaner to be installed on the engine.
The ZZ6 also features cylinder heads based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves, along with beehive-style valve springs enable greater high-rpm performance and durability. It also uses an aggressive hydraulic roller camshaft that supports the engine’s high-rpm airflow capability while maintaining excellent low-speed drivability.
A simple plug-and-play control system rounds out the package to get the engine running in your project without the need for third-party tuning.
The Turn-Key crate engine kit includes the distributor and damper installed, with the throttle body, starter, air conditioning pump, alternator, single-belt Front-End Accessory Drive Kit and more also included. Chevrolet Performance also offers the ZZ6 EFI Deluxe kit, which includes the installed distributor and damper.
| Engine | ZZ6 EFI Turn-Key |
| Horsepower | 420HP @ 5800RPM |
| Torque | 408FT/LBS @ 4500RPM |
| Compression Ratio | 9.72:1 nominal |
| Block | Cast iron with 4-bolt mains |
| Crankshaft | Forged steel, shot peened |
| Heads | Fast Burn aluminum with 62cc chambers |
| Valves | 2.00"/1.55" |
| Camshaft Lift | 0.474"/0.510" Steel hydraulic roller |
| Dur. @ 0.050" | 208°/221° |
Fuel Pump and Flex Plate no longer included!
