Not sure if anyone on here knows, but my dad has been looking at a new motor for his firebird. It is a pontiac 400. If he gets it he can go with either a 650 with vaccuum secondary or a 750 with mechanical. I am not sure on the brands but will find out from him. I know nothing about carbs or sizing so any help would be appreciated. The motor supposedly has a cam, but the only things i know for sure are intake and roller rockers.
I think the heads are just stock, not sure though. The guy says they are ported and polished. Ill check the brands too, what are the better brands for carbs?
