Thanks for the replies
These heads are the new cnc elimanotr 210 afr heads that flow 312 cfm out of the box and they have been ported, so i think the heads are capable of the 675 hp range.
As far as the intake it has been professionally ported by larry meaux
The camshaft is going to stay as money does play into everything and yes by today standards as .634 lift and 272 duration cam is not that big but i like the dependability of the smaller cam and don't have all the valvetrain stress.
When the motor was dynoed as a 383 the dyno was tight compared to most around here and i got close to 600hp at 597 so i am hoping by going up 26ci that i should gain around 35-40 hp..........so all and all i am not really looking for anymore hp then 650 (640 i will be happy with)as it will still go fast in a short wheel base car