Originally Posted by
harold harper
They make a big difference ported.I made 283whp with my old flat black coupe.I guess the people you hear that from don"t know how to port heads.
if i remember correct harold you ported my old E7 heads off my 94 back in the day and if i remember right car went 13.0 and with ported heads and a E cam car went 12.5 or 12.6 so i would say yea the ported heads helped alot.