Product Description
The ATS 309-832-4272 Stage 3 Allison LCT1000 Transmission Package is the perfect upgrade for 2003–early 2004 6.6L LB7 Duramax trucks looking for improved reliability, towing performance, and moderate horsepower capability. Designed as a significant step above stock, this 2WD transmission package strengthens critical internal components while maintaining excellent drivability for daily use and heavy hauling.
This Stage 3 package is ideal for trucks running upgraded tuning, light performance modifications, or heavy towing applications. With increased clutch capacity, improved valve body calibration, and the ATS Five Star torque converter, it delivers smoother shifts, better torque handling, and longer transmission life compared to factory units.
Whether you're towing heavy loads or running a tuned daily driver, this transmission provides the durability and performance needed without stepping into full race-level builds.
FAQ
Q: Who is the Stage 3 transmission best suited for?
A: It’s ideal for daily drivers, tow rigs, and moderately tuned trucks needing more reliability than stock.
Q: Does this transmission support towing?
A: Yes, it is designed specifically to improve towing performance with better torque capacity and cooling.
Q: Is a torque converter included?
A: Yes, the ATS Five Star torque converter is included for improved efficiency and power transfer.
Q: How much power can this handle?
A: The Stage 3 package is typically suited for up to approximately 500–600 horsepower depending on setup.
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
- Improved clutch capacity over stock
- Enhanced valve body calibration for smoother shifts
- ATS Five Star torque converter included
- Increased durability and heat management
- Ideal for tuned and lightly modified trucks
Specifications for ATS 309-832-4272
| Specification | Details |
|---|---|
| Part Number | 309-832-4272 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 3 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LB7 |
| Model Years | 2003 - Early 2004 |
| Horsepower Rating | Up to 600 HP |
| Torque Capacity | Up to 100% over stock |
| 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 |
