The 0-3310S is a 750 CFM (Cubic Feet per Minute) vacuum secondary, double-pumper carburetor. It's a modern reproduction of one of most famous and successful carburetor models from the 1970s and 80s.It's designed for high-performance street machines, hot rods, and mild race applications, typically on V8 engines between 350 and 454 cubic inches.
Flange: Smaller, 4-bolt pattern. Fits most intake manifolds for small-block and big-block Compatible With Chevys, Fords, etc. (e.g., Edelbrock Performer, Weiand Stealth, etc.).
Enthusiasts who prefer Vacuum Secondaries: The vacuum secondary mechanism automatically opens the rear barrels based on engine demand, making it very street-friendly and difficult to "bog" during normal driving.