Chevrolet Performance keeps finding ways to upgrade the venerable Small Block V8. For the new ZZ6 350 crate engine that gets a full debut at the SEMA Show, valvetrain improvements help it reach ...

Chevy debuted its first small block V8 in ... 2:1 compression ratio. The GM Performance ZZ6 crate engine provides 420 ...

Chevy is highlighting its new LT4 crate engine ... and dry-sump (P/N 19332702) versions • The ZZ6 350 crate engine – the latest in the quarter-century history of "ZZ" crate engines.