2001-2004 Duramax LB7 DT550 Transmission - 5 Speed Allison (DT550-LB7-5)
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Description
Description
Superseded Part Number: dt550-LB7-5-TQC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 do a lot of frequent towing.
DuramaxTuner TCM tuning included.
Part Number: dt550-LB7-5-TQC
Features
Features
- 5-Speed
- 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
- DuramaxTuner TCM tuning included.
Is this Transmission right for you?
- Aren’t looking to upgrade your injectors and CP3 down the road
- Might consider an upgraded turbo
- Mainly daily drive your truck or use it for work
- Tow light to medium loads frequently
- Have a high mileage or worn-out transmission
- Are experiencing limp mode
- Currently have P0700 codes
- Experiencing other mechanical issues with your stock trans
- Quality and Reliability are your top priority
- Want something made in the USA
- Value a warranty with unlimited miles in the 1st year
Additional Info
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
All New Electronics
- 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
Upgraded Valve Body
- TransGo shift kit with Mike L. upgraded shift springs
- Provides quicker, crisper shifts
- Brand new valve body and solenoids
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
- Upgraded TransGo lock-up valve
- Increases line pressure for stronger clutch holding force
Questions and Answers
Questions and Answers
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2001-2004 Duramax LB7 DT550 Transmission - 5 Speed Allison (DT550-LB7-5)
