I just talked to my machinest that is puting together my built motor.. i went the biggest valves they make for the head and skp2 cams i had a lot of clearence left it was like 91thousandths and 101thousanths on both ex and in but about the cam degree... im trying to figure out if the tuner degrees your cams or what you go buy what the paper says... btw nolimit motorsports forgot one of my retainers