Michigan Motorsports Black Dished LS Flexplate Fits all LS Based Engines except LSA, LS9 and 1999-2000 6.0L SFI 29.1, 168 Tooth, Internal Balance, 6 Bolt Flange, "Quick Rev" Design Michigan Motorsports Black Flexplates combine the features of our Platinum series flexplates with an attractive black finish and laser engraved letting. They are engineered to handle extreme duty applications and designed to take the punishment of todays high horsepower engines. A 4mm thick centerplate provides a solid foundation, and ring gears are precision welded to meet SFI specifications, utilizing robotic machinery and cold-welding processes. This high integrity design has lightening holes for quicker throttle response, perfect for off-road, road racing or street use. Features: SFI 29.1 certified Direct bolt on component Forged one-piece steel ring gear .035" thicker than stock flex plates Constructed from cold-rolled premium steel Double welded ring gear for added durability Converter Bolt Patterns: 3 x 10.75” GM 3 x 11.06” GM 3 x 11.50” GM 6 x 11.06” GM 6 x 11.50” GM Transmission Compatibility: TH350, TH400, 700R4, 4L60E, 6L80E, 4L80E when used with a torque converter designed for a "dished" flexplate. If using with an older non-LS torque converter, Michigan Motorsports SKU # 26400 or MMCRNKADPT can be used to properly space the converter snout.