The 0-3310S is a shiny aluminium version of the classic 0-3310 – a hot rod staple for over four decades. Dual feed fuel inlets assure you get all the fuel you need while its vacuum secondaries and manual choke make it amazingly universal. The famed 0-3310 is one of ten inaugural inductees into the Hot Rod Magazine Speed Parts Hall of Fame! Its well known performance calibration and 750 CFM airflow keep it on top still today. Vibratory polished Performance upgrade for stock to mildly modified vehicles Universal calibration for easy bolt-on performance Manual choke (cable actuated – hand controlled) for precise cold start control Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries. Dual feed fuel inlets for constant high volume fuel delivery Compatible with GM, Chrysler, and Ford A/T kick-down linkage. Additional parts may be required. Power valve blow-out protection 100% wet-flow tested by Holley technicians to assure it arrives ready to run!