602-604

[crate40]

does anyone know if there is a difference in the 602 and the 604 engine blocks ??? Thanks

[dynoman14]

602 rules allow 2 block castings and 2 head castings.

The 880 is the common block between the 602 & 604.

Big differences in head and intake castings so selecting out the good ones is 25+hp.
I am also hearing there is a new lw piston and ring pack. I have not seen yet but should be getting an engine in real soon.