Product Description
The ATS 309-842-4332 Stage 4 Allison LCT1000 Transmission Package is a high-performance upgrade engineered for 2007.5–2010 6.6L LMM Duramax trucks. Designed to handle significantly increased horsepower and torque, this 2WD transmission package eliminates factory weak points and replaces them with upgraded internals built for durability and consistent performance.
This Stage 4 package is ideal for performance enthusiasts and heavy towing applications, delivering increased clutch capacity, improved shift firmness, and superior holding power under load. Paired with the ATS Five Star torque converter and deep transmission pan, this setup ensures optimal cooling, power transfer, and long-term reliability.
Capable of supporting high horsepower builds, the ATS Stage 4 transmission is a complete solution for drivers looking to push their LMM Duramax beyond stock limitations while maintaining excellent drivability.
FAQ
Q: What is the difference between Stage 4 and Stage 5 transmissions?
A: Stage 4 is designed for high-performance street and towing applications, while Stage 5 includes additional billet components for extreme horsepower and racing conditions.
Q: Is this transmission good for towing?
A: Yes, it is built to handle heavy towing with improved clutch capacity and better heat management compared to stock.
Q: Does this include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for enhanced torque multiplication and efficiency.
Q: How much power can this transmission handle?
A: This Stage 4 transmission is typically rated for high horsepower applications up to approximately 700–800HP depending on setup.
Fitment
- 2007.5 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2008 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2009 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2010 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2007.5 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2008 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2009 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (2WD)
- 2010 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (2WD)
Key Features
- Designed for 700–800HP applications
- Increased clutch capacity over stock
- Upgraded internal components for durability
- ATS Five Star torque converter included
- Deep transmission pan for improved cooling
- Improved shift quality and holding power
- Ideal for towing and performance builds
Specifications for ATS 309-842-4332
| Specification | Details |
|---|---|
| Part Number | 309-842-4332 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 4 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LMM |
| Model Years | 2007.5 - 2010 |
| Horsepower Rating | Up to 800 HP |
| Torque Capacity | Significantly increased over stock |
| Shipping Weight | Approximately 400 lbs |
| Shipping Method | Freight (Core Charge Applies) |
| Warranty | 5 Year / 500,000 Mile Limited Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
