CFM: 650 Fuel: Gasoline New or Remanufactured: New Number of Barrels: 4 Carburetor Flange: Square bore Choke: None Secondary Type: Mechanical Fuel Inlet: Dual Primary Jet Size: 72 Primary Power Valve (Hg): 4.5 Hg Secondary Jet Size: 72 Primary Outer Air Bleed Sizes Included: 73 Primary Inner Air Bleed Sizes Included: 33 Secondary Power Valve: Plug Secondary Outer Air Bleed Sizes Included: 73 Secondary Inner Air Bleed Sizes Included: 33 Carburetor Finish: Tumble polished Ford Kick down: No Booster Type: Down-leg Throttle Linkage Type: Universal Carburetor Height (in): 3.250 in. Notes: Carburetor features a high-flow main body, billet metering blocks, and billet throttle baseplate. Fuel inlets are 7/8-20 in. thread. Circle track drivers have specific needs when it comes to carburetion, and that's where these Q-Series 4-barrel circle track carburetors from Quick Fuel come into play. These Q-Series carburetors offer precise fuel metering under hard cornering, braking, and acceleration, and are certain to deliver on the performance factor--big time! The Q-Series 4-barrel circle track carburetors feature an all-aluminum construction, which helps reduce weight over zinc-bodies carburetors by 2/3rds. They also have tough stainless steel throttle plates, and sight glass windows for easy float adjustment, plus many other great features to provide you with optimum performance on the track