I have to agree with Mr P body on this one. Something is wrong with the car and it's not your cam. You made 572 hp at the wheels and it's only running 125 mph at the stripe? Something is holding it back...fuel system, weak ignition (good grounds?), clutch issues, etc. That's a lot of motor to be running those ET's and speeds. I'd go over the car real good and make it work with what you currently have before I tore into the engine looking for more power. CHIP