Posted By: HotRodDave
How much HP potential from 516 heads? - 12/12/10 11:05 PM
I have a 440 and am considering what to do with it, I am a SB guy at heart and in practice. I know the 516 heads are not the best but just how much are you guys makeing useing them, either ported or untouched? I have my own valve grinder and the guides and stuff are fine so it would not be cost worthy for me to look for anything else.