BD Diesel Duramax Allison Transmission & Converter Package - Chevy 2007-2010 LMM 4wd

When you're pushing your Duramax diesel hard, especially with towing or performance driving, the stock Allison transmission can start to show its limits. This BD Diesel Stage 5 transmission and torque converter package is built to handle the increased power and torque demands of your 2007-2010 LMM Silverado or Sierra. It's a matched set, meaning the transmission and the triple-disc torque converter have been dyno tested together to ensure they perform as a reliable unit.

BD Diesel has beefed up this transmission with several key upgrades. The input shaft is a solid billet piece, designed to withstand the shock of rapid throttle changes and high horsepower. Inside, you'll find a new double cage stator sprag, which is a notable improvement over the OE design to prevent common failures. They've also increased the clutch count in several gear sets, adding up to 75% more clutches in the C3 set alone, and used high-energy GPZ frictions for better engagement and durability. The included heavy-duty aluminum pan adds an extra 3.5 quarts of fluid capacity, helping to keep temperatures down during demanding use.

This package is designed for enhanced stall in street and towing applications, and the triple-disc torque converter offers improved lock-up pressure. The trapezoid teeth design on the clutches increases contact area, which helps reduce wear and chatter. Each transmission is dyno tested before it leaves BD Diesel, so you know it's ready to go. This is a complete transmission assembly, ready to be installed to bolster your drivetrain's strength.