TH400 Extreme Duty Forward Drum & 300M Input Shaft 35-Spline This gives you the ability

This gives you the ability to run a much stronger and reliable transmission to your high performance engine

Built for performance

With their compression-style design

Speedmaster Conversion carrier bearing

simplifying EFI conversions for both street and race applications

TH400 Extreme Duty Forward Drum & 300M Input Shaft 35-Spline This gives you the abilityTake your GM TH400 transmission to the next level with this premium heavy duty forward drum and 300M input shaft combo. Engineered for high power street, strip, or off road use, this kit addresses the critical failure points of stock components with a focus on strength, precision, and reduced rotating mass.