i think 490-540 hp at the flywheel. i got a pro building it and he didn't tell me yet. but other 390's and 401's that he has built where around 530 hp with iron heads and the same cam. i'll get it dyno at the rear wheels when it's done. i might go with a supercharger down the line. but i'd need to change pistons and cam and put in extra head bolts. i might do the extra head bolts with this build. but not sure since i don't need them for this build.

i think 500 hp should be good for a street car. but if it's not i'll get a supercharger.