Description
Fits
| Year |
Make |
Model |
| 2011-2016 |
GMC/ Chevrolet HD |
6.6L Duramax |
Tired of harsh shifting or banging gears (no pun intended)? These DT550 fully built transmissions from Calibrated Power give you smooth, positive shifts & easy torque converter lock-up; perfect if you are building a reliable daily, or heavy hauling rig.
Part Number: dt550-LML-TQC
Features
- C1 - C4 Raybestos GPZ Clutches
- C5 Raybestos Clutches
- Improved clutch torque capacity
- High heat resistance
- Smooth engagements
- Maximized reliability
- Better durability than stock
- Made in the USA
- New Neutral Safety Switch
- New Speed Sensors
- All OEM Electronics and Sensors
- No risk of corrosion, shorts, and bad connectors.
- Trouble free operation
- Provides long-term reliable performance we can stand behind
- Provides quicker, crisper shifts
- Brand new valve body and solenoids
Additional Info
Extra Clutches
- DT550 has added clutches for stronger clutch holding capacity
- The factory Allison has 12 C1 clutches. The DT550 has 16
- The factory Allison has 6 C2 clutches. The DT550 has 7
- The factory Allison has 4 C3 clutches. The DT550 has 6
- The factory Allison has 5 C4 clutches. The DT550 has 6
Upgraded C3/C4 Return Springs
- Stronger and more durable design
- More dependable clutch pack release
- Improves shift quality
Upgraded Billet Torque Converter
- Totally Custom for the DT550
- Goerend Billet Triple Disc (Stock has one disk)
- Designed to rotate smoother when coupled
- Forged front cover and clutch pistons
- Insures torque converter clutch lock up
- Superior strength to stock
- Smooth consistent lock-up
- 1800 - 1900 RPM Stall Speed
- Perfect stall speed for towing and daily driving
- Provides reliability for increased power levels
Upgraded Transmission Case
- Pre-drilled to accept C3 Oiler upgrade (Even if not selected)
- Easily upgradable in the future
- Upgraded Line Pressure Spring
- Increases line pressure for stronger clutch holding force
