BD Diesel 01-04 Chevy LB7 2WD Allison Transmission & Converter Package

Doing a transmission swap on your 2001-2004 Chevrolet Silverado 2500 HD or GMC Sierra 2500 HD, especially if you're running a tuned LB7 Duramax diesel? This BD Diesel Allison transmission and torque converter package is built to handle the extra power and torque you're putting down. It's a complete, matched set designed to increase the durability and performance of your truck's drivetrain.

BD Diesel has gone through this Allison transmission to make it stronger. They've added a deep aluminum pan that boosts oil capacity by 3.5 quarts, which helps keep temperatures down during heavy use. Inside, you'll find a re-calibrated accumulator body and a full shift kit with a line mod valve to firm up shifts and increase line pressures. They've also added extra lube circuits to the OD planet and support to the output and intermediate shafts, along with an upgraded OD snap ring and a machined center support. The front pump is reworked, and the geartrain is fully rollerized for improved reliability. The clutch counts have been increased across the board, with significant gains in the C3 (75% increase) and C4/C5/C1/C2 clutches (17% increase over stock). This transmission is dyno tested to ensure it performs as expected.

The included torque converter is designed for street and towing applications, featuring torque-multiplying cast aluminum stators for better response at lower RPMs. It operates more efficiently, generating less heat and improving fuel economy compared to stock. The converter has a stamp-forged steel front cover and furnace-brazed fins for durability, and it comes with up to triple the amount of lock-up clutch material for a more solid connection under load. When you buy this package, you're getting a matched set that's been tested together, ready to stand up to the demands of your diesel.