Stock cam, and my fuel pressure is about 47 psi with the pump I just put in. Fuel delivery isn't an issue, I have brand new Delco plugs and wires, so I think ignition is fine. I'm pretty sure I'm losing power somewhere between the engine and the wheels, especially the way it only happens off the line. It pulls enough that I'll get wheelspin if I go WOT on a wet road at 45mph, but off the line its just lazy.