Passing along some Darin Morgan info

He must know everyone especially all the OEMs that have much bigger budgets to do all that research and the same guys who designed that lS7 head to work that way and what happens when head porters touch it? It loses all its torque and doesn't work in the lower rpms anymore. But it flows more air.

OK one more thing and then i'm done. he was NOT taking about the ls7 or any ls or LT head for that matter he was taking about a High end race heads like he would make for you if you had that kind of cash. If you do a valve job and change the shape of that valve job in any way, you could loose 20-50 HP.

For the record, I'm sure i could kill HP on any ls head if i tried.