Holley 750 cfm Double Pumper Alloy Carburetor With Manual Choke # HO0-4779S Carburetor, Gasoline, Model 4150, Universal, 750 cfm, 4-Barrel, Manual Choke, Dual Inlet, Silver, Each CFM: 750.00 Fuel: Gasoline New or Remanufactured: New Number of Barrels: 4 Carburetor Flange: Square bore Choke: Manual Secondary Type: Mechanical Fuel Inlet: Dual Primary Jet Size: 70 Primary Power Valve (Hg): 6.5 Hg Primary Discharge Nozzle Size (in.): 0.028 in. Secondary Jet Size: 80 Secondary Discharge Nozzle Size (in.): 0.031 in. Carburetor Color: Shiny Ford Kickdown: No Booster Type: Down-leg Throttle Linkage Type: Universal Carburetor Height (in.): 3.250 in. Quantity: Sold individually. Notes: 9.500 in fuel line center to center length. Holley 4150 Double Pumper Carburetors Holley 4150 Double Pumper carburetors are a perfect upgrade for hot street cars and race vehiclesthey're an American icon when it comes to performance. From their roots as the premier carb on many factory muscle cars, to powering thousands of vehicles across the finish line, the Double Pumper is a great choicewhether you're burning up the street or the quarter-mile. The Double Pumper is designed for use on lightweight vehicles with a manual transmissionor an automatic transmission with a high stall and low rear-end gears. These carburetors are available in a gold dichromate or tumble polished shiny finish, along with these features: Dual accelerator pumps for additional fuel under initial acceleration; mechanical secondaries for great performance; dual feed fuel inlets for constant high-volume fuel delivery; and a manual choke for easy control of engine warm up. Order the model with options to suit your application.