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Ok, how about the KB 400's, zero deck the block, 84cc Edelbrock heads (don't want to machine them incase I want to use them on a 440 later on), and a .040ish head gasket.....what CR are we talking about? Does this sound good?


I come up with 9.890:1. I used the .040 KB400's on my build to achieve the 9.9:1. Use this calculator. http://www.kb-silvolite.com/calc.php?action=comp