The new aluminum Track Warrior carburetor didn’t just happen by accident. It was pulled from the pedigree of one of Holley's most popular carbs, the classic 4150 HP. You can count on the crew at Holley to give you track proven performance with a budget minded price! The all new Track Warrior weighs up to 40% less than traditional zinc units thanks to the aluminum main body design and aluminum metering blocks. New optimized race calibrations provide outstanding throttle response and overall performance making it a warrior both on and off the track. Staying true to its HP roots, Track Warrior carbs utilize a contoured venturi design improving airflow and horsepower while the mechanical secondaries provide the tire melting performance you’d expect from a Holley. Select from the available 650, 750, and 850 CFM versions with your choice of metering blocks and base plate in either black or purple. Billet metering blocks offer a true gasket sealing surface with fully adjustable emulsion bleeds, power valve channel restrictors, and idle feed restrictors for outstanding tuning capability. True 4 corner idle adjustment, knurled curb idle screw for easy adjustment with just your fingers, and screw in air bleeds are just a few of the great features of the Track Warrior helping you get the most out of your engines performance. All of our carbs are 100% wet-flow tested by Holley technicians before they are shipped, ensuring your carburetor arrives ready to run!