Product Description
The ATS 309-822-4290 Stage 2 Allison LCT1000 Transmission Package is a high-quality upgrade for 2004.5–2005 6.6L LLY Duramax trucks looking for improved reliability and performance over stock. Designed to correct factory weaknesses, this 2WD transmission package delivers stronger clutch holding capacity, improved shift quality, and enhanced durability for daily driving and towing applications.
Perfect for lightly modified trucks, the Stage 2 package increases torque capacity while maintaining smooth drivability. Featuring upgraded internal components and the ATS Five Star torque converter, this transmission ensures efficient power transfer and reduced slippage under load.
Whether you're towing heavy loads or adding moderate performance upgrades, this ATS transmission provides a dependable solution that outperforms the factory Allison in both strength and longevity.
FAQ
Q: What is the main benefit of the ATS Stage 2 transmission?
A: It improves reliability and torque capacity over stock while maintaining smooth shifting for daily driving and towing.
Q: Is this transmission suitable for towing?
A: Yes, it is ideal for towing applications and offers improved clutch holding power and reduced heat buildup.
Q: Does this package include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for better efficiency and performance.
Q: What power levels can this transmission handle?
A: This Stage 2 transmission is designed for stock to moderately modified trucks, typically supporting up to approximately 450–500 horsepower.
Fitment
- 2004.5 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (2WD)
- 2005 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (2WD)
- 2004.5 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (2WD)
- 2005 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (2WD)
Key Features
- Designed for stock to moderate performance builds
- Improved clutch capacity over factory transmission
- Smoother, more consistent shift quality
- ATS Five Star torque converter included
- Enhanced durability for towing and daily driving
- Reduced slippage and improved efficiency
- Direct replacement for factory Allison LCT1000
Specifications for ATS 309-822-4290
| Specification | Details |
|---|---|
| Part Number | 309-822-4290 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LLY |
| Model Years | 2004.5 - 2005 |
| Horsepower Rating | Up to 450-500 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 |
