Product Description
The ATS 309-822-4332 Stage 2 Allison LCT1000 Transmission Package is a performance-focused upgrade designed for 2007.5–2010 6.6L LMM Duramax trucks. Built to eliminate common factory transmission weaknesses, this package delivers increased holding power, improved shift quality, and enhanced reliability for daily driving, towing, and mild performance applications.
This Stage 2 transmission is ideal for trucks with upgraded tuning or light performance modifications. Featuring upgraded clutch packs, precision recalibration, and reinforced internal components, it provides a significant improvement over stock without sacrificing drivability. The included ATS Five Star torque converter ensures efficient power transfer and better lock-up performance under load.
Whether you're towing heavy loads or running a tuned daily driver, this transmission package offers the durability and performance needed to keep your LMM Duramax running strong.
FAQ
Q: What power level is the ATS Stage 2 transmission designed for?
A: Stage 2 is designed for stock to moderately modified trucks, typically supporting up to approximately 500–600 horsepower.
Q: Is this a good option for towing?
A: Yes, this transmission is excellent for towing, offering improved clutch holding capacity and better heat management over stock.
Q: Does this include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved performance and durability.
Q: Is tuning required?
A: Tuning is not required, but pairing with proper tuning will maximize performance and longevity.
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 stock to moderately modified trucks
- Handles approximately 500–600HP
- Upgraded clutch packs for improved holding capacity
- Enhanced shift calibration for smoother, firmer shifts
- ATS Five Star torque converter included
- Improved durability over factory transmission
- Ideal for towing and daily driving
Specifications for ATS 309-822-4332
| Specification | Details |
|---|---|
| Part Number | 309-822-4332 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LMM |
| Model Years | 2007.5 - 2010 |
| Horsepower Rating | Up to 600 HP |
| Use Case | Daily Driving, Towing, Mild Performance |
| Shipping Weight | Approximately 375 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 |
