Buddy I work for ford the GT-40
s A: flow much better after being cleaned up B: the P;s just dod a little better stock cause of small runners and velocity. ANd the small exayst valve will ALWAYS hurt as you step up the power. Yeah the GT40p gets it in but EXCUSE ME hows it get out. ITS a fricken truck head thats ford needed bottom end torque in to pull a 45oo pd truck. You got the p. You want a Cobra that spins to 5500 rpm and makes power up there ford dud out the old castings for the gt40's. Go read a nother magazine buddy. I DONT KNOW WHAT IM TALKING ABOUT. OK go get p's then feed this myth and make some special header company rich! I'll buy used cheap GT-40's and see-ya at the track!
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