Stage 5 Allison LCT1000 Crate Transmission

Features:

• Fits 2001-2002 6.6L LB7 Duramax 4WD
• PTO-compatible Allison LCT1000 transmission
• Includes ATS Five Star torque converter
• Deep transmission pan for improved cooling
• Billet input shaft for increased strength
• Billet output and intermediate shafts included
• ATS Co-Pilot controller for optimized shifting
• Designed for towing and high performance use
• Built to handle added horsepower and torque
• Complete Stage 5 transmission upgrade kit

A Transmission Built for the Demands of Your LB7

If you're driving a 2001 to 2002 Silverado or Sierra HD with the 6.6L LB7 Duramax and you're starting to push the limits of what your factory transmission can handle, the ATS Stage 5 Allison LCT1000 Crate Transmission is the serious upgrade you've been looking for. Designed specifically for 4WD models with a PTO, this package brings together strength, precision, and long-term reliability. At its core is ATS’s upgraded version of the Allison LCT1000 transmission, paired with their Five Star torque converter to improve torque transfer and eliminate common drivability issues under load. Whether you’re towing, tuned, or putting down extra power, this transmission is built to support it all without flinching.

Heavy-Duty Internals and Smart Control Solutions

Inside the case, you’ll find billet input, output, and intermediate shafts that can withstand the extra stress of higher horsepower and heavy-duty use. The deep transmission pan helps regulate temperatures by improving fluid capacity and cooling efficiency, which is especially helpful during long hauls or heavy trailer loads. To round out the package, ATS includes their Co-Pilot Transmission Controller, giving you enhanced control over shift points and line pressure to match your driving style and workload. This isn’t a quick fix or a basic rebuild—it’s a purpose-built system for owners who want to drive harder, tow heavier, and expect their transmission to keep up every step of the way.

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