Rochester Quadrajet Carburetor for Chevy GMC 327 350 396 427 750CFM Manual Choke

4 Barrels Carburetor For 1901R Rochester Quadrajet 4MV Chevy 1966-1973. CFM:Carburetor For Rochester Quadrajet can range anywhere in between 600 and 800 CFM. Most are rated 750 CFM. There are three separate basic carburetor models.