The Holley 950 CFM Double Pumper is built for serious performance, delivering the fuel flow and throttle response demanded by high-output street machines and track-ready builds. Its mechanical secondaries and dual accelerator pumps provide instant, hard-hitting power the moment you crack the throttle, making it ideal for aggressive driving and big-cube engines. Built on Holley’s proven 4150 platform with race-inspired calibration and precision craftsmanship, this 950 CFM carburetor is designed to unlock maximum horsepower and crisp, consistent performance pull after pull.