GM Turbo 400 TH400 Billet 300M Steel Input Shaft and the outer housing has

and the outer housing has a slim design that allows for mounting inside of the headers

while Cleveland/Modified covers are laser cut steel

Speedmaster accelerator pump covers include a lever and screws

Speedmaster automatic transmission deep pans provide additional fluid capacity and cooling ability

Speedmaster remote thermostat housings locate the filler neck at the highest point of cars with low mount radiators to bleed air

GM Turbo 400 TH400 Billet 300M Steel Input Shaft and the outer housing hasHigh horsepower and hard launches at the drag strip can cause tremendous stresses on the internal transmission components. Speedmaster Input shafts can withstand the stresses and the added power.