Quote: Well, I suppose if there was something I WANTED to hear, what hemigod426 just added would be it! So if I mount a set of 516 heads (say with the steel shim gaskets-I have some) on the 400, milling them .040" if necessary, I would get something near 9.2 to 1 compression? That's what I was after. Does anyone else agree?
if you also mill them 40 it will be 10 to1 with 39 thou felpros. 400 has biggest bore size, which means more comp gains per smaller head than 383/440 motors
