TBS 14-71 polished alum. competition blower. This blower has all teflon stripping to insure maximum efficiency on your engine. The rotors are billet 120 degree and hard anodized for a long lasting supercharger and a tighter inside tolerance creating a more efficient supercharger. The blower uses double lipped teflon seals to provide superior seal and uses billet rear bearing plate, front bearing plate, and billet front gear cover for maximum strength and gives a superior polish. Blower case is set up for an 4150/4500 carburetor adpt. or any injector with a 13.250" bolt pattern can bolt to the top of the blower. This blower case is made from forged alum. to give maximum case strength and the best polish job on the market. Blower includes a pressure relief valve as well as a oil sight glass to check the gear oil in the front of the supercharger. This blower is also a great choice for a mild alch. class where lots of horsepower is not needed and the racer doesn't want to deal with a set back blower and port nozzle injection.