The Speedmaster PCE637.1004 is a replacement clutch pack pressure plate designed specifically for GM Turbo 400 (TH400) automatic transmissions. This pressure plate services both the forward and direct clutch packs, making it a practical solution for rebuilds, upgrades, or routine transmission overhauls on TH400-equipped vehicles.
Engineered to meet the demands of TH400 transmission rebuilders, this Speedmaster pressure plate helps restore proper clutch pack clamping force and shift quality. Whether you are performing a stock rebuild or preparing a performance transmission, having the correct pressure plate is essential to achieving reliable, consistent clutch engagement in your TH400 unit.