Quote Originally Posted by rickisrad View Post
Question- I am switching over the 90# springs from the old heads to the new ones. My question is that I have ZZP stainless valves in the old one as well. Should I switch those over? I’m not sure how much of a difference if any the stainless valves would have over stock? Thanks
The stainless valves really won't make any difference. If they are oversized, they might help a very small amount. I would probably swap them, since you're taking the springs off anyways. But, it really won't make any difference either way.