2001-2004 Duramax DT550 Transmission w/ Billet Torque Converter (dt550-LB7-5-TQC)
Purchase to earn 6900 Dirty Dollars Learn More
Price with add-ons:
Core Deposit
After you have made your purchase, please follow the steps listed below to receive your refundable Core charge. This process must be completed within 60 days of receiving your product(s). Failure to send us the core(s) within the 60 day timeframe will result in you only receiving a partial refund amount of the core deposit.
1) Reply to this email or give us a quick call (778-754-7090) and let us know that you will be shipping us a Core, please include your Original Invoice/Order Number so we can link up your file.
2) On the outside of the ORIGINAL box, please write "Core Return" and your Original Invoice Number/Order Number.
3) Ship your core with tracking to:
Unit 6 - 1060 Stevens Road, West Kelowna BC Canada V1Z1A3
4) Once we receive the Core here at the shop, it will be inspected to ensure that it is rebuildable. After the inspection is passed, your core charge will then be refunded (giving you more money for truck parts!).
Note:
- If you have purchased a BD Diesel product, please follow their core-return program which can be found here.
- If you have purchased a Fleece Performance product that has a core charge, please follow the Fleece Performance Core Return instructions found here.
- If you have purchased a Randys Transmission product, we must receive the core no later than 30 Days after the product delivery date.
- Failure to follow these steps may result in a delay/denial of your core refund.
- Failure to send us the core(s) within the 60-day timeframe will result in you only receiving a partial refund amount of the core deposit.
- 0-60 Days: Full Deposit if the core passes the inspection.
- 61-120 Days: 25% of your eligible core refund amount will be deducted.
- 121+ Days: 50% of your eligible core refund amount will be deducted.
Let us know if you have any questions or concerns. We can be reached at 778-754-7090 or feel free to email sales@dirtydieselcustoms.com.
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Description
Description
Fits
| Year | Make | Model |
| 2001-2004 | GMC/Chevrolet | 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 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
Previously asked questions
We've compiled a list of questions and answers below.
Don't see your question? Ask us anything about this product.
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What’s the hp rating on this transmission to the wheels ?
Engineered to handle up to approx. 550 RWHP.
