Dyer's Superchargers Dyer's Machine Service Inc all come with heavy duty front and rear bearing plates, heavy duty bearings and seals, triple pinned rotors, hand clearanced with oversized dowel pins, and heavy duty steel gears Dyer's Machine Service Inc manufactures 471, 671, 6v71 and 871 Superchargers. Heavy Duty case 671s and all 871s feature Dyer's custom cases with "DYERS BLOWERS" CNC'd into the case. Superchargers can be purchased polished, unpolished or black wrinkle. |