t i just seen a chevyhiperformance article on a vortec 406 build that had stock vortec heads with 1.94's/1.50,230/230dur. cam, the engine cranked out 425hp at 5000rpm and 525lbs tq at 3500rpms, which is very impressive and is what i'm kinda looking for, only i don't mind lower the torque and bit and increasing horses, i'm probably going to cut the heads for 2.02/1.60 and open up the intake and exhaust ports just a bit. i don't know if running more cam is such a good idea since heads are bit small, but what do you guys recommend? i know i can't run past 5500-6000rpm without running out of head.