Re: carb choice
I have an Edelbrock 600 CFM on my 327. I tried to tune a 750 holley on it and I was unable too. A 750 cfm square bore carb. is just too big for a 327. Usually what limits a 327 is the runner size of the heads. My vote NOW, would be for a Quadrajet. You will have a total venturi size of 750 CFM, but much smaller primaries for excellent street performance.
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