Upgrade your LB7 Duramax with the unmatched durability of BD Diesel’s TowMaster Allison 1000 Transmission & Converter Package. Designed specifically for 2001–2004 2WD Chevy 6.6L trucks, this kit delivers exceptional performance for towing and daily driving. The transmission is re-engineered with increased clutch counts and improved hydraulic circuitry to maximize strength under load. Paired with a torque converter featuring enhanced stall and furnace-brazed fins, this dyno-tested combo ensures reliable torque delivery, lower heat, and smoother shifts for the long haul.

💰 NOTE: $2,100 USD refundable core deposit required prior to shipping.

✅ Key Features:

Transmission Highlights:

• BD HD Aluminum Deep Transmission Pan (adds 3.5qt fluid capacity)

• High energy GPZ™ friction materials

• Revised oil circuit design & boosted lock-up pressure

• New A & B trim valves deliver full line pressure

• Increased clutch count:

  • C1: 8 (↑14%)

  • C2: 7 (↑17%)

  • C3: 7 (↑75%)

  • C4: 7 (↑17%)

  • C5: 7 (↑17%)

• Fully dyno-tested for performance & reliability

Torque Converter:

• Enhanced stall suited for towing/street use

• Cast aluminum torque-multiplying stators

• Stamp-forged steel front cover

• Furnace-brazed turbine fins

• Triple the lock-up clutch material

• Improved efficiency & reduced heat

🚙 Vehicle Compatibility:

• 2001 Chevy Silverado 2500HD/3500 6.6L Duramax LB7 (2WD)

• 2002 Chevy Silverado 2500HD/3500 6.6L Duramax LB7 (2WD)

• 2003 Chevy Silverado 2500HD/3500 6.6L Duramax LB7 (2WD)

• 2004 Chevy Silverado 2500HD/3500 6.6L Duramax LB7 (2WD)

Fits 2WD models only – not for 4WD applications

📦 What’s Included:

• BD Diesel Allison 1000 TowMaster Transmission Assembly

• ProForce Torque Converter (Enhanced Stall)

• BD HD Deep Aluminum Transmission Pan

• Pre-installed GPZ™ Frictions and Upgraded Clutch Packs

• New Convertor Lock-Up & A/B Trim Valves

• Fully dyno-tested, ready-to-install unit

🛠️ Why BD Diesel?

BD Diesel Performance is a leading authority in diesel drivetrain and performance solutions. Each BD transmission is built to outperform OE designs through superior materials, upgraded internal components, and real-world testing. With unmatched support, proven durability, and a 36-month warranty, BD Diesel gives you the peace of mind to tow, haul, and daily drive with confidence.