Street Avenger carburetors utilize a square flange bolt pattern and are engineered for maximum performance. This carburetor is the ultimate vacuum secondaries Street performance upgrade, and uses Holley's patented 'No Trouble' system. Using the 'No Trouble' Quick Change adjustable vacuum secondary this Street Avenger carburetor comes calibrated specifically for optimal Street performance.
Holley's 'No Trouble' electric choke utilizes factory calibrated settings and arrange identified and restricted for easy on vehicle adjustment, while there adjustable needle and seat provided on vehicle float adjustment to accommodate varying fuel pressure levels.
Darrell Poe, 6 time Regional NASCAR True Value Engine Builder of the Year "The Holley 500 CFM HP carburetor is the best thing that's happened to the NASCAR Whelen All-American series. Whether you're running a quarter-mile bullring or running the 800 foot long straightaway at Martinsville the Holley 500 HP carb pulls all the way around"