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2011-2016 Duramax LML DT550 Transmission (DT550-LML)

Calibrated Power
Regular price $7,192.80 CAD

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The Details

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Purchase to earn 7192  Dirty Dollars Learn More

Description

Superseded Part Number: dt550-LML-TQC

Now includes the LML style dual disc torque converter as standard equipment. Contact us to quote C3 oiler or deep pan options.


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.

DuramaxTuner TCM tuning included.

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
  • DuramaxTuner TCM tuning included.

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

Questions and Answers

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Vehicle Fitment - Part No: DT550-LML

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