What brand, and lift rockers would you say would work well on some gt40p;s? What type do i need?...im going to stay with the stock cam, because it was explained to me that it is fine with this setup. Also, do i need, say new pushrods? THANKS!!!!!
Don;t use 1.7 rockers - the difference in flow/lift in the P heads from .400" to .500" is about 4cfm. You can use the stock pushrods but check the roller pattern on top the valve stem with grease to be sure it's in the center of the stem at full lift. The stock cam is a nice peice, but the cams vary quite a bit from factory specs in duration and lsa.
stock gt40p's are pedestal mount ( bolt down ) heads they're are aluminum ones to chose from like ford racing, scorpion, and if $$ is an issue crane has steel roller rockers for $189.95 from summit.