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Take your GM TH400 transmission to the next level with this premium heavy duty forward drum and 300M input shaft combo
they are made from 5140 Chromoly steel
If you're looking for headers designed for maximum street performance
Speedmaster Pro-Billet Ready-to-Run distributors are the perfect upgrade for weak OE electronic distributors
12-point head design and a larger-than-stock shank diameter
Universal Power Brake Booster 12V Electric Vacuum Pump Kit Take your GM TH400 transmissionKeep your brakes pumped up with the appropriate stopping power. Speedmaster electric vane style pumps help to maintain vacuum levels and proper braking performance while offering less noise and vibration.
