XDP has a large assortment of stock replacement and upgraded parts for the Transmission in your 1982-2000 GM 2500HD/3500HD. Torque Converters from DPC, Sun Coast Converters, and ATS can manage competition-level horsepower and torque. Automatic Transmission Pans from XDP, Mag-Hytec, and PPE will help extend the transmission fluid life by keeping it cool. Upgraded Flex Plates will handle more power and enable better power transfer from the Torque Converter. Hardened input, output, and intermediate Automatic Transmission Shafts are a massive upgrade for your stock transmission. With a Valve Body from Revmax, BD-Power, or ATS, you can improve the shifting of your transmission.
In older diesel trucks it is common for them to have a manual style transmission which requires the driver to do all the gear selections on their own. Upgrade your transmission's input shaft with XDP's Manual Transmission Shafts. Find the parts you need to keep your transmission on the road with the products available at XDP. Find the best Transmission Fluid brands for your Automatic or Manual Transmission, including Royal Purple, Lucas Oil, and Champion. Manual Transmission Clutches from Valair or South Bend Clutch come with single, dual, and triple clutch plates to handle any power level. Replace the worn-out Manual Transmission Hydraulics to help engage and disengage the clutch better.