Re: Carb recommendation for my needs
A square bore 750 cfm, IMHO is too big on the street for a 350 ci engine. A 625 or 650 cfm is too small for a 383.
The street Demon is not a square bore carburetor, it is a spread bore carburetor, meaning the primaries are smaller than the secondaries.
I would run either a Quadrajet or the street Demon 750 cfm if you want to be able to use it on a 383 later on.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1