750 on 355 sbc, overkill?
I bought a carb that was off of a coworkers drag car (351C Maverick) he had since blown that motor and now has a 302 and says that the carb is too much for it. The carb is a Holley 750 Dual Feed mech choke/secondaries with (i believe 68 and 72 jets in it). Will this carb be over kill for my 355 with vortec heads, flattop pistons, crane .454/.454 lift intake/exhaust, and edelbrock performer rpm manifold?
I want to have good power but i dont want totally absurd gas mileage figures. I really dont know much at all about carbs but what i know is that the bigger the carb the less velocity you have on the intake sidein turn, the less manifold vaccum you have. With low manifold vaccum there are other negative effects. Can someone with more experience in this area shed some light on it for me? Thanks. -Bob
1985 Firebird Base
2.8 > 355 Carbed > 355 Vortec TPI
Vortec heads, Keith Black Hyper flat-tops, mild Crane Cam, Edelbrock TPI Vortec lower intake, Hedman shorties, high flow cat, Mufflex 3.5" cat-back with Spintech. CAI. WS6 sway bars, springs and steering box