ATS 309-834-4248 Stage 3 Allison LCT1000 Crate Transmission | 2001-2002 GM 2500HD/3500HD 6.6L Duramax LB7 4WD

Features:

• Built for 2001-2002 LB7 Duramax 4WD
• Includes ATS Five Star Torque Converter
• Deep Transmission Pan for Better Cooling
• Comes with ATS Co-Pilot Controller
• Billet Input Shaft for Increased Strength
• Improved Shift Quality and Durability
• Designed for High Torque Applications
• Enhanced Fluid Capacity and Heat Control
• Preassembled Crate Transmission Package
• Ideal for Towing and Performance Builds
• Precision-Built for Seamless Integration
• Replaces Factory Weak Points

Built for Serious Work and Big Power

If your LB7 Duramax 2500HD or 3500HD is ready for more than your stock Allison can handle, the ATS 309-834-4248 Stage 3 Transmission Package is the upgrade it’s been waiting for. This crate transmission is designed for 2001–2002 4WD trucks and brings a full suite of performance-focused components that work together to handle heavy loads, higher horsepower, and hard use without flinching. From daily driving with confidence to towing on steep grades or pushing extra power from performance mods, this Stage 3 setup transforms your drivetrain into a more capable and reliable system. The inclusion of the ATS Five Star torque converter dramatically improves torque multiplication and shift feel, while the deep transmission pan helps control heat under pressure.

Durability Where It Matters Most

ATS didn't just rebuild the stock transmission—they reengineered it with longevity and high performance in mind. A billet input shaft increases strength at one of the system’s most failure-prone points, while the included Co-Pilot Transmission Controller gives your truck smarter, smoother shifting and added protection. The entire package is precision-assembled and tested to ensure seamless integration with your 6.6L LB7, so there’s no second-guessing compatibility or performance. Whether you're building a dedicated tow rig, a daily driver with a heavy foot, or a weekend warrior, this transmission package is purpose-built to hold strong when the stock unit would otherwise give out.

Fits: 2001, 2002 GM 2500HD/3500HD 6.6L Duramax LB7 4WD

Includes:

• ATS 4WD 2001-2002 Allison LCT1000 Performance Transmission
• ATS Allison LCT1000 Five Star Torque Converter (302-950-4248)
• ATS Allison LCT1000 Deep Transmission Pan (301-900-4248)
• ATS Co-Pilot Transmission Controller (601-924-4248)
• Billet Input Shaft
  

Note: $500 Shipping surcharge will be added at checkout