Quote:
Originally Posted by Carlrx7
whats your magic number? ive always shot for .080 but no more than .100
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.080 is the high end of where I like it. .060 - .080 works for me. The pushrod length can depend on other factors besides just the cam base circle, but I can say that the Comp 7.4's measure @ 7.40. I really like to check for myself rather than do what people say, if I can. Too many variables and tolerance possibilities.
I will say that if your cam has over .600 lift and the heads are stock and gaskets are stock, then "generally" you would need at least the 7.425.