Chevy 604 Crate Motor Parts


Chevy 604 Crate Engine

The ‘604 crate engine has an excellent intake manifold and cylinder for this application. Porting for air flow improvement on these heads and intake for more performance is a waste of time when running the stock lift camshaft. So, instead of spending money on head and intake manifold work for the ‘604 crate, go buy a new set of tires. If you want a significant performance improvement change the camshaft.

The Fast Burn, Vortec Bow-Tie style aluminum heads on the ‘604 are excellent flowing stock heads.

Unlike the heads on the ‘602 & ‘603 crate motors, which improve tremendously with “UnderCover Porting“, this head will not benefit from “UnderCover Porting” type  modifications.





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