Most racing carburetors will have either 8 or 12 air bleeds depending on whether they are 2 or 3 circuit. In the context of racing carburetors, it helps to think of them as (4) one barrels. The amount of air bleeds a carburetor will have is dependent on the number of throttle bores and circuits the carburetor has. Virtually every carburetor you come across will have these which make this a universal discussion. Air bleeds are responsible for determining the amount of air that will mix with each circuit in the metering block. The clean, polished look coupled with Red, or Black metering blocks, booster inserts and throttle plates will certainly set your ride apart whether you are at a show or the track.ĭon't trust your performance to just anyone, Holley is the only Modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.You've heard of them, but what do they do? Air bleeds, sometimes referred to as "air jets" or "air bleeders" play a vital role in the operation of your carburetor. The Ultra Dominators feature 6061–T6 billet metering blocks with changeable emulsion, idle feed, and power valve restrictions, a fully hand polished top and venturii for maximum airflow and less air turbulence, Teflon coated slabbed throttle shafts with low profile, button head screws mated to lightweight anodized aluminum throttle plates improve airflow, Fully adjustable external linkage provides 1:1, progressive, or soft progressive throttle activation, 12 hole anodized billet booster inserts for superior fuel atomization, and aluminum dual inlet fuel bowls with built in clear sight glasses are just a few of the features on the new Ultra Dominator. The new Ultra Dominators feature all aluminum construction which saves 3.8lbs of the top of the engine. The new Ultra Dominators keep that same mentality alive with even more features. ULTRA fast – race winning fuel calibrationsĭominator Carbs were designed specifically for making Top End Horsepower and Torque in High End Racing Engines. ULTRA easy – built in sight window for simple float adjustments ULTRA shiny – tumble polished finish on main body & fuel bowls Slabbed throttle shafts, and hand polished venturii inlet for ULTRA powerful– high signal billet booster inserts, In the metering blocks for infinite tunability ULTRA adjustable – emulsion, idle feed and power valve restrictions ULTRA strong – billet metering blocks and booster inserts ULTRA smooth – fully adjustable external linkage ULTRA light – all aluminum construction saves 3.8 lbs Ultra Dominators 1050 CFM Ultra Dominator Four Barrel Race Carburetor - Black™PART #: 0-8896-2BK Includes notched float and jet extensionsģ Circuit Metering for enhanced tunability Race Ready Out of the Box Model 4500 Mechanical Secondary 1 x 4 Carburetor Set–ups 3–Circuit Metering Three Circuit Dominators add another Level of Transition thus Requiring Less Pump Shot 4500 Dominator HP 1050 CFM Four Barrel Race CarburetorPART #: 0-8896-1ĭominator Carbs were designed specifically for making Top End Horsepower and Torque in High End Racing Engines.