GM Turbo 400 TH400 Billet Aluminum Intermediate Clutch Blocker Eliminator Plate Speedmaster billet main caps improve

Speedmaster billet main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores

Just bolt the pre-assembled unit to the back of the shifter and you are ready to go

Looking for a way to increase the amount of clean air going into your engine

they require the use of a quick-drying contact cement to bond them to the valve cover before installation

GM Turbo 400 TH400 Billet Aluminum Intermediate Clutch Blocker Eliminator Plate Speedmaster billet main caps improveConvert your GM Turbo 400 into a 2 speed by using the Speedmaster billet aluminum intermediate clutch pack insert.