Quote Originally Posted by FAYLUR
Heads are as stated 'smog' heads and if I would make any changes it would be here. They are 305HO '416' heads,1.84 in.,1.5 ex.,58cc chambers,,,yeah I know,,,YUK! Not a good head for a hipo build but I can't see why they wouldn't flow enough to get a 3200 lb. vehicle in the low 15's.
They have been used on NHRA stock and SS cars with some work.
Down to 287 hp with those heads ..................

The HP is very flat from 5500 to 7500 but I don't think that will help you that much drag racing. In addition you need really good springs and lifters or you will float your valves well before 7,000 rpm ...........

Kitz