Quote Originally Posted by CH@Dbee View Post

my old car trapped 120 and would hang(or pull a car) with cam'd, bolt-on C5Z's so if your trapping 129 you should have no issue at all with them.
I don't trap 129mph, lol I just make stuff like that up for the hell of it. I trap like 120mph to 121mph at 20/21psi or so when everything is running right on pump gas. I have traped 99mph in the 1/8th before at 24/25psi with 110 octane but never ran it in the 1/4th at that boost level.