I replied to someone asking why the NV4500 is so common in truck pulls. The truth is many of the competition versions are nothing like a stock one. In comp sled pulling every shaft inside the transmission gets replaced with huge heavy duty parts and most factory gears are removed for maximum strength. They only keep the core of the case so it can survive extreme torque without failure. No weak points. Just raw mechanical power. #NV4500 #diesel #DieselPerformance #ManualTransmission #StartupSlick