Product Description
The ATS 309-822-4272 Stage 2 Allison LCT1000 Transmission Package is the perfect upgrade for 2003–early 2004 6.6L LB7 Duramax owners looking to improve reliability, towing performance, and overall transmission longevity. Designed as a heavy-duty enhancement over the factory Allison, this Stage 2 package eliminates common failure points while maintaining excellent drivability for daily use.
This transmission package is ideal for trucks with mild performance upgrades or those used for towing and hauling. Featuring upgraded clutch packs, improved internal components, and the ATS Five Star torque converter, it delivers increased holding capacity and smoother, more controlled shifts compared to stock.
The Stage 2 package provides a dependable solution for drivers who need stronger performance without stepping into extreme horsepower builds, making it one of the most popular upgrades for working Duramax trucks.
FAQ
Q: What is the difference between Stage 2 and higher ATS stages?
A: Stage 2 is designed for stock to moderately modified trucks, focusing on improved durability and towing performance rather than extreme horsepower handling.
Q: Is this transmission good for towing?
A: Yes, this package is ideal for towing applications, offering improved clutch holding power and better heat management over stock.
Q: Does this package include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved torque multiplication and efficiency.
Q: What horsepower level can this handle?
A: This transmission is best suited for trucks up to approximately 500–600 horsepower depending on usage.
Fitment
- 2003 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (2WD)
- 2003 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (2WD)
- Early 2004 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (2WD)
- Early 2004 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (2WD)
Key Features
- Designed for towing and daily driving performance
- Increased clutch capacity over stock
- Improved internal components for durability
- ATS Five Star torque converter included
- Enhanced shift quality and reliability
- Ideal for stock to mildly modified trucks
Specifications for ATS 309-822-4272
| Specification | Details |
|---|---|
| Part Number | 309-822-4272 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LB7 |
| Model Years | 2003 - Early 2004 |
| Horsepower Rating | Up to 600 HP |
| Torque Capacity | 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 |
