Carburetor Question (To Jet or to Go Up In CFM)

[Captainfab]

A 4776 is a 600 cfm double pumper, not a 750.

Originally Posted by KyleSeal

Put a new 750 double pumper, a 4776 not a 4779-9 750, but a regular street 750. Fired up. We're just adjusting it down now.
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Did you ever determine what your timing is?

Originally Posted by KyleSeal

Tuned that 750 DP I purchased, drilled the butterflies and threw a tiny powervalve in it, corrected the MSD box wiring, put a new distributor and spark plugs in it and its driving around again. Another issue I had was a bad alternator. New one fixed it.