Holley 0-6210 650 CFM Quadrajet™ Style Spreadbore Carburetor Fuel Pump Regulator and Filter. Fuel Tanks. LS Accessory Drive Brackets and Kits. LS Drivetrain. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. Holley Carburetor Selector. Application Chart 670 CFM Holley Off-Road Truck Avenger Carburetor The Truck Avenger features a quick change vacuum secondary for easy fine tuning; four vacuum ports for all necessary vacuum accessories; factory preset electric choke for easy start ups; and a built-in fuel filter. The 670 CFM Off-Road Truck Avenger is the perfect carburetor for small blocks or stock big block engines.