Whos heads are they? Where they flowed at 28. inches of water?
I'm going to take SWAG and say if it doesn't make 600 HP with those parts something is drastically wrong shruggy
I've made 600+ HP on CA pump swill with a 472 C.,I street hemi motor with iron heads and a stock intake with a set of stock (jetted better)1966 Street hemi Carter AFB years ago, that motor had a half way decent solid lifter flat tappet street cam in that motor also, I don't remember the exact specs now though, sorry blush
Be ready for instant tire smoke work up devil boogie

Last edited by Cab_Burge; 11/10/19 12:15 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)