The most i have seen from cc work, including polishing everything is 62 on a stock head.
03 Z06, LTs, A&A P1SC running 6psi, 550/471
drivers side is a dream....passenger side on the other hand...i lost 2 screwdrivevers and a socket when i chucked them in the woods
u can do it
I am permanently banned from all petting zoo's for getting to friendly