Product Description
The ATS 309-852-4308 Stage 5 Allison LCT1000 Transmission Package is a top-tier performance transmission solution designed for 2006-2007 GM trucks equipped with the 6.6L Duramax diesel engine. Built specifically for high-horsepower and extreme-duty applications, this Stage 5 package delivers maximum strength, durability, and reliability for towing, racing, and heavy-use environments.
This complete ATS package includes a fully built Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan. Each component is engineered to handle significantly increased torque loads while improving cooling efficiency, clutch holding capacity, and overall transmission longevity.
ATS upgrades the Allison platform with billet internal components, reinforced clutch packs, and precision calibration to provide firm, consistent shifts and superior power transfer. The included Five Star torque converter enhances torque multiplication and reduces slippage, while the deep transmission pan increases fluid capacity for improved heat dissipation.
This Stage 5 package is ideal for high-performance Duramax builds, aggressive towing setups, and drivers pushing well beyond stock power levels who demand uncompromised transmission performance.
FAQ
What does the ATS Stage 5 package include?
This package includes a fully built ATS Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan.
What makes the Stage 5 transmission different?
Stage 5 units feature upgraded billet internals, enhanced clutch capacity, and are designed for high-horsepower and extreme-duty applications.
Is this transmission good for towing?
Yes. It is built for heavy towing, hauling, and high-performance use where maximum durability is required.
What engines does this package support?
This package is compatible with LLY, LBZ, and LMM Duramax engines in 2006-2007 model years.
Do I need supporting upgrades?
For best results, supporting modifications such as tuning and drivetrain upgrades are recommended when running a Stage 5 transmission.
FITMENT
2006-2007 Chevrolet Silverado 2500HD 6.6L Duramax Diesel (LLY / LBZ / LMM) 2WD
2006-2007 Chevrolet Silverado 3500HD 6.6L Duramax Diesel (LLY / LBZ / LMM) 2WD
2006-2007 GMC Sierra 2500HD 6.6L Duramax Diesel (LLY / LBZ / LMM) 2WD
2006-2007 GMC Sierra 3500HD 6.6L Duramax Diesel (LLY / LBZ / LMM) 2WD
Specifications for ATS 309-852-4308
| Specification | Details |
|---|---|
| Part Number | 309-852-4308 |
| Product Name | ATS Stage 5 Allison LCT1000 Transmission Package |
| Transmission Model | Allison LCT1000 Automatic |
| Engine Fitment | 6.6L Duramax Diesel (LLY / LBZ / LMM) |
| Vehicle Fitment | 2006-2007 Chevy Silverado / GMC Sierra 2500HD / 3500HD |
| Drive Configuration | 2WD |
| Included Components | Built Transmission, Five Star Torque Converter, Deep Transmission Pan |
| Performance Level | Stage 5 (Extreme Duty / High Performance) |
| Material | Billet Internal Components & Heavy Duty Clutch Packs |
| Shipping Information | Freight Shipping Required |
| Core Charge | Core Charge Applies |
| UPC | Not Available |
| GTIN | Not Available |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
