Holley Performance 0-80905RD Gen 3 Ultra Dominator HP Race CarburetorCategory: Holley Carburetor PartsCarburetorGen 3 Ultra Dominator HP Race CarburetorGen 3 Ultra Dominator HP Race Carburetor; 4bbl; 1150cfm; 2 Circuit Metering; 1x4 Gas; Model 4500UHP; Dual Fuel Inlet; No Choke; Shiny w/Red Metering Blocks/Booster Inserts;FEATURES:All Aluminum Construction Saves 3.8 Lbs. Over Original Models,28 Percent Weight Savings,Calibrations For Todays Larger Race Engines and New Fuels,Fully Machined From Venturi Throat To Throttle Bore,Integrated Idle Bypass Valve Allows For Adjustment Of Idle,12 Hole Billet Booster Superior Atomization/Throttle Response,Metering Blocks Feature Improved True Gasket Sealing,Dual 50CC Accelerator Pumps Fuel From Idle To Full Throttle,Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.