With a fully furnace-brazed turbine and CNC-machined billet design, the GM 6L80 Bolt-Together Race Bolt-Together Torque Converters from TCI are engineered specifically for serious racers that require a torque converter with the utmost in strength and quality. They are designed for extreme power, easy stall speed changes and consistent performance. This race version requires a custom tuned TCU/PCM. Benefits include a triple-disc clutch with significantly higher torque capacity and much higher clamping force than a single-disc design, while they also have the ability to fully lock-up under wide open throttle so there is little or no high-gear slippage. Even though these converters are designed as a “race only” part with special tuning, they can be used in many high horsepower and modified vehicles when a single-disc converter simply won’t withstand the power. Featured along with the high torque capacity, triple-disc, woven carbon fiber friction lock-up clutch is a 50-spline clutch hub, meaning the horsepower capacity of this converter is second to none. The bolt-together CNC billet design permits users to easily set the optimum stall speed for his or her application without sending it back to TCI. When the stall is properly matched to the torque curve of the engine, the launch and overall performance of the vehicle will be greatly increased. The bolt-together design also enables quick disassembly to allow inspection and service of bearings and lock-up components at home or at the track. And like all TCI torque converters, each unit undergoes the legendary TCI Triple Testing process and is HDT coated to prevent corrosion and help dissipate heat.