Valve to piston clearance

My friend has a 498 and he had the same problem, the cam was off and when I set it up right it had .080 clearance, his cam was a .600 lift, Ross flat top pistons that came out of the hole also not much but enough, I used .080 Cometic gaskets. It started out with 12.5 CR and I think we ended up with about 11.0:1 and It runs great. I would definitely double check the cam. The exhaust should not hit and the intake clears.