I am going to run the hell out of this motor and see what happens. When my idiot light comes on ( which is has been only 2 different times ) i will continue to exit the track. I manage to trick my wife into thinking I need that forged crank and H beam rods. but if i start throwing them out the side of the block she might stop believing me. this motor has a race balance on it and at 7500 rpm's you cant even tell your running it hard. aside from the wife complaining of cost, i would hate to gernade it. It runs awsome. Has anyone else had success, or experience with the 4/7 swap cams? so far i love it.