Product Description
The ATS 309-864-4308 Stage 6 Allison LCT1000 Transmission Package is the ultimate high-performance transmission solution for 2006-2007 GM Silverado and Sierra HD trucks equipped with the 6.6L Duramax diesel engine (LLY, LBZ, and early LMM) and 4WD drivetrain. Designed for extreme horsepower and torque applications, this Stage 6 package is built to handle aggressive tuning, heavy towing, and competition-level performance.
This complete package includes a fully built ATS Stage 6 Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan. ATS incorporates billet internal components, upgraded clutch packs, modified valve body calibration, and increased line pressure to deliver maximum holding capacity and reliability under the most demanding conditions.
The included Five Star torque converter enhances torque multiplication, improves throttle response, and reduces slippage, while the deep transmission pan increases fluid capacity and cooling efficiency to maintain consistent performance under load. This package is engineered for diesel owners pushing the limits of their truck who need a transmission that will not fail.
FAQ
What is included in the ATS 309-864-4308 package?
This package includes an ATS Stage 6 built Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan.
What makes the Stage 6 transmission different?
Stage 6 includes billet internal upgrades, increased clutch capacity, and higher line pressure calibration designed for extreme horsepower and torque applications.
Is this transmission suitable for high horsepower builds?
Yes. This package is specifically designed for high-performance and competition-level trucks making significantly more power than stock.
Does this improve towing performance?
Absolutely. The upgraded components and increased cooling capacity make it ideal for heavy towing and hauling.
Will this fit my truck?
This transmission fits 2006-2007 GM Silverado and Sierra 2500HD/3500HD trucks with the 6.6L Duramax diesel and 4WD configuration.
FITMENT
2006-2007 Chevy Silverado 2500HD 6.6L Duramax LLY/LBZ (4WD)
2006-2007 Chevy Silverado 3500HD 6.6L Duramax LLY/LBZ (4WD)
2006-2007 GMC Sierra 2500HD 6.6L Duramax LLY/LBZ (4WD)
2006-2007 GMC Sierra 3500HD 6.6L Duramax LLY/LBZ (4WD)
Early 2007 LMM compatible
Specifications for ATS 309-864-4308
| Specification | Details |
|---|---|
| Part Number | 309-864-4308 |
| Product Name | ATS Stage 6 Allison LCT1000 Transmission Package |
| Transmission Model | Allison LCT1000 Automatic |
| Engine Fitment | 6.6L Duramax LLY / LBZ / Early LMM |
| Vehicle Fitment | 2006-2007 Chevy/GMC 2500HD & 3500HD |
| Drive Configuration | 4WD |
| Included Components | Stage 6 Built Transmission, Five Star Torque Converter, Deep Transmission Pan |
| Performance Level | Stage 6 (Extreme Duty / High Horsepower) |
| Material | Billet Internal Components with Upgraded Clutch Packs |
| Cooling Upgrade | Deep Transmission Pan for Increased Fluid Capacity |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Information | Freight Shipping Required |
| Core Charge | Core Charge Applies |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
