Don't know if PBM Strike Force heads are the same as Pro Comp. But they're Chinese and the valve guide ended up being very badly worn in two thousand miles. I got rid of them and got a set of Dart Pro 1's. With out changing anything else, I went from 457 HP to 485 HP.
Don't know if PBM Strike Force heads are the same as Pro Comp. But they're Chinese and the valve guide ended up being very badly worn in two thousand miles. I got rid of them and got a set of Dart Pro 1's. With out changing anything else, I went from 457 HP to 485 HP.
An engine builder near me found out the same thing on a small block went from Procomp to AFR saw a 40 horse gain on the dyno but the heads flow decent.