Torino, thanks for the thoughts. I've started a new thread because, after considering the advice here and from my buddies, I'm starting from the block and considering a complete build. In the other thread "410 Build Up", I have documented that it seems to be about 9.3 to 1 CR. I took out the 360 a while ago, but the 410 just didn't seem enough, to a large extent because it was dead above 4,500 (no surprise there given the intake and heads).
