Why a lower stall for diesel applications?
Theoretically, for maximum acceleration, the stall speed of the torque converter should match the peak torque rpm of the engine . Significant gains in throttle response, acceleration, towing and fuel efficiency are possible with a performance diesel torque converter that lowers factory stall speed from 2,000-2,500rpm levels to the 1,600-1,900rpm range where maximum torque is produced. A gasoline high performance engine makes power at a higher rpm and needs a higher stall speed torque converter to put more power to the ground quicker. A diesel high performance engine makes power at a lower rpm and needs a lower stall speed torque converter to put more power to the ground quicker. The right torque converter eliminates that “spongy” feel when you step on the accelerator pedal. This reduced converter slippage also results in less heat generation for longer transmission life.
