GM Turbo 400 TH400 Billet Steel Intermediate Clutch Sprag-Outer Race These combinations start with a

These combinations start with a reliable Speedmaster 9

muscle car

it combines durability with high performance

The LS (Gen3/4) platform has many design benefits over the earlier SBC engine designs

so it is not necessary to change to a 10 degree retainer

GM Turbo 400 TH400 Billet Steel Intermediate Clutch Sprag-Outer Race These combinations start with aSpeedmaster heavy duty intermediate clutch outer race delivers more torque capacity of any OE race. High torque loads cause the race to fracture at two stress points: the radial lube holes that contact the rollers and the sharp inside corners at the base of the outer splines. Design improvements to the splines, plus upgraded material and a custom manufacturing process, further improve durability to make this heavy duty race the best option available