Product Description
The ATS 309-845-4308 Stage 4 Allison LCT1000 Transmission Package is a high-performance upgrade designed for 2006–2007 6.6L LLY, LBZ, and LMM Duramax trucks equipped with 4WD and PTO. Built to handle aggressive power levels and heavy-duty workloads, this transmission package eliminates factory weaknesses while delivering improved durability, torque capacity, and shift performance.
Engineered with upgraded clutch packs, billet internal components, and ATS’s proven transmission technology, the Stage 4 package is ideal for trucks used in towing, work applications, and performance builds. The included ATS Five Star torque converter and Co-Pilot controller ensure optimal power transfer and precise shifting under all driving conditions.
This complete package is designed to handle significantly more horsepower and torque than stock, making it a reliable solution for demanding Duramax owners who require both strength and drivability.
FAQ
Q: What is the difference between Stage 4 and Stage 5 transmissions?
A: Stage 4 is designed for high-performance and heavy towing applications, while Stage 5 includes additional billet components for extreme horsepower builds.
Q: Does this transmission support PTO functionality?
A: Yes, this unit is specifically designed for trucks equipped with a Power Take-Off (PTO).
Q: Is this transmission suitable for towing?
A: Absolutely. It is built to handle heavy towing with improved torque capacity and cooling capabilities.
Q: Is a torque converter included?
A: Yes, the package includes an ATS Five Star torque converter for enhanced performance and efficiency.
Fitment
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (4WD)
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (4WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (4WD Classic)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (4WD Classic)
Key Features
- Designed for high-performance and heavy-duty use
- Increased clutch capacity for improved holding power
- Billet internal upgrades for strength and durability
- ATS Five Star torque converter included
- Compatible with PTO-equipped applications
- Deep transmission pan for improved cooling
- ATS Co-Pilot controller for optimized shifting
- Ideal for towing, work trucks, and performance builds
Specifications for ATS 309-845-4308
| Specification | Details |
|---|---|
| Part Number | 309-845-4308 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 4 |
| Drivetrain | 4WD |
| PTO Compatibility | Yes |
| Engine Compatibility | 6.6L Duramax LLY / LBZ / LMM |
| Model Years | 2006 - 2007 |
| Horsepower Rating | Up to 750-800 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 |
