Anybody running 440 4006452 heads on a 383?
Sure. Opinions vary, and I am sure others will disagree with me, but my thinking is, you HAVE the 516 heads. To me, unless you have 2K to drop on aluminum heads, you'll come out less expensive using what you have. Unless you're trying to build a 600 HP 383, the 516s will work good with a few changes.
