alright........will the twisted wedge heads and e 303 or f303 (or what is a comperable trickflow cam) have clearance problems with stock pistons. i know you are supposed to check anytime you change heads but just generally. i know the valves are bigger than my gt40y's
Twisted wedges always have to be checked. There is cars that they will not clear because of minor inconsitancies.
It's not only the lift that causes clearance issues, it can also be the duration.
Check to be sure, because if you miss a gear, and the clearance is close, you are going to be out a few hundred in valves.