Stage 3 Allison LCT1000 Crate Transmission

Features:

• Fits 2007.5-2010 6.6L LMM Duramax
• Designed for 2WD Silverado and Sierra
• Includes Five Star torque converter
• Billet input shaft for added strength
• Deep transmission pan for cooler temps
• Co-Pilot controller manages line pressure
• Built for heavy towing and performance
• Reduces slip and improves shift quality
• Ideal for tuned or upgraded engines
• Fully assembled crate transmission package
• Enhanced clutch packs and internal upgrades
• Durable build for long-term reliability

Built to Handle Serious Power and Daily Demands

If your 2007.5–2010 Duramax LMM 2WD is packing more power than stock, the ATS 309-832-4332 Stage 3 Allison LCT1000 Crate Transmission is built to match it stride for stride. Designed specifically for GM 2500HD and 3500HD trucks running the LMM engine, this performance transmission package replaces the factory unit with a fully upgraded assembly tailored for heavy-duty use. Whether you're towing heavy trailers, daily driving, or putting your truck through serious work, this setup gives you the durability and shift quality to keep up. The billet input shaft and upgraded clutch packs are engineered to take on increased torque without slipping or failing under pressure.

Complete Transmission Solution for Confident Performance

This Stage 3 package isn't just a transmission—it's a complete performance solution. It includes ATS’s Five Star torque converter, deep transmission pan for improved fluid capacity and cooling, and their Co-Pilot Transmission Controller, which intelligently manages line pressure and clutch engagement based on driving conditions. These components work together to deliver crisp, controlled shifts, reduced transmission temps, and greater longevity under demanding loads. It’s the ideal upgrade for drivers looking to increase power without compromising on drivability or reliability. If you’re serious about keeping your Duramax running strong under stress, this crate transmission deserves a spot under your truck.

Fits: 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM 2WD

Includes:

• ATS 2WD 2007.5-2010 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 (601-924-4326)
• Billet Input Shaft
  

Note: $500 Shipping surcharge will be added at checkout