just got some trick-flow twisted heads for my car after selling the performer rpm didn't want to worry about clearance ,would like to know if it was a wise chose to go with my combo.
12s??? the heads will ALLOW that and more... however the Edelbrocks you sold shold have you in the 12s also.. along with the GT40s you have ( had) The heads are no means the magic button to put you anywhere!! You might be slower, untill you get the heads and combo wired out!!
Check p/v also.. make sure there are no issues there. The heads are good, just dont bolt them on an figure a 12 sec pass... cool?