How do you not know in what regard I say this, Unless you 'cherry pick' my quote.
Quote the rest of my post and you'll have a better understanding of what I'm saying, not that I dont think you already do...
Big heads need bigger builds under them plain and simple. For his combo and cid/compression...the smaller iron head wins with velocity ,given that the numbers should be close through .300-.400 lift...its also got more heat. I'm still wanting to raise the comp up half a point when I switch to aluminum.