GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Stay on track with Speedmaster

Stay on track with Speedmaster 9 in

plain design that adds a unique look to your engine

When building rear-ends for race cars or trucks

Designed for use with Speedmaster air cleaners

And they also include a roller bearing at the end of the tailshaft which if lubricated by our reworked passages for the yoke and rear bearing assembly

GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Stay on track with SpeedmasterHigh horsepower and hard launches can cause tremendous stresses on the internal transmission components. Speedmaster automatic transmission input shafts can withstand the stresses and the added power.