465 CFM - 4160 - Vacuum Secondaries - Gold Dichromate - Gasoline;Gold Dichromate finish for corrosion resistance and classic Holley looks; Calibrated and intended for small V-8 engines; Aluminum construction allows better heat dissipation and lighter weight; Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.; Single feed fuel inlet for easy installation; Power valve blow-out protection; Factory preset electric choke for easy startups; 100% wet-flow tested by Holley technicians to assure it arrives ready to run!;