Ok so i have a 377 2 bolt . It has fully ported 292 heads and flat top pistons, triple springs , rev kit, 600 lift 300 duration lunati roller, harland sharp rockers, ported Victor jr. and 1 3/4" headers. When it ran it wouldn't pull power past 6700 Rpm's. Dyno'd 505 hp and 425 ftlbs. My first thought was modern Aluminum heads would wake it up a little! It ran on pump premium due to the big cam overlap which was a plus. What suggestions does everyone have to help it rev higher and make more power while staying streetable? Im not lloking to spend a small fortune but will spend what i need to!:yes: Oh and this is not for my son's Nova but for my AC Cobra. So the weight is 2450 lbs and is manual shift!