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Monday thru Friday 7:00 am to 5:00 pm CST
Texas - Central Time
CDT Level 2 6L80 bench rebuild includes expert labor and all high-quality parts itemized below. This is a performance 6L80 transmission build designed for enhanced durability, power, and reliability, whether your vehicle is used for the street, track, or competition. We use premium friction components, a complete piston kit, and internal upgrades that improve holding capacity and help the transmission handle ultimate stress under load.
Our rebuild is ideal for heavy duty and modified vehicles, including those running boost, turbo, or built for high control and acceleration. Whether you’re towing with a work truck or launching down the strip, this 6L80E transmission is designed to take abuse and keep going.
We optimize gear ratios, update critical shafts, and reinforce high-wear components to prevent failures under extreme conditions. Our Level 2 option is a popular build for customers who want a balance between daily drivability and serious track performance.
You will need to ship your transmission to us for the rebuild. If you’re interested in us supplying a core 6L80E to start with, please contact us for availability, options may vary depending on inventory and vehicle application. This upgrade adds strength without excessive weight, ensuring your drivetrain is as efficient on the road as it is off it. Trust CDT to deliver quality and performance that lasts.
CDT456L2/80offers 17% more clutch apply area than stock.
CDT35RL2/80 offers 25% more clutch apply area than stock. High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Kolene steels provide a surface treatment that enhances wear & fatigue resistance.
High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
*$4,115 does not include any Hard Part damage, Torque Converter or TCM/ECM tuning. After an internal inspection of your transmission we will notify you of any hard part damage that will carry an additional cost. Also, if your vehicle is pre-2010 we may need to install a new upgraded pump stator (cover) and 1-2-3-4/3-5-R drum.
Warranty varies according to application. Please refer to Warranty Info page on our website.
Shipping If you need assistance shipping your transmission, we can arrange Domestic Shipping (averages $250 - $500 each way) for your transmission. Please complete the Shipping Questionnaire on our website (listed under the Contact Us tab) if your would like us to arrange shipping.
Transmission Tuning We do not supply a TCM or ECM tune. Please understand that proper tuning of the TCM and ECM are mandatory. All 6L80’s are torque base shifted units. The torque signal is calculated thru the ECM. Therefore, transmission performance & longevity are directly dependent on the delivered torque signal that’s calculated in the ECM. If this is not done properly, you will experience premature transmission failure. We also do not recommend maxing out pressures or deleting torque management completely because it will cause seal failure and/or hard part breakage. Please contact us for tuner recommendations. A review of final tune and final log files is included. Once your final tune and log reviews meet our requirements we will document this in our records for warranty purposes. Please only drive the vehicle for tuning purposes until this process is completed.
Flushing Cooler & Lines We cannot stress enough the importance of flushing the transmission cooler(s) and lines, even if they are new. We recommend using a Hot Flush Machine or something comparable.
Auxiliary Cooler You need to install a stacked plate auxiliary transmission cooler (not a tube & fin style cooler) rated for 25,000 GVW. The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot – the cooler will lower operating temperature and recovery time which in turn will extend the life of your transmission.
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The Crew at CDT
Yes, the CDT Level 2 6L80 rebuild is specifically designed for heavy duty and modified vehicles. It offers improved durability and holding capacity, making it ideal for trucks, SUVs, or performance cars running boost, turbo, or towing heavy loads.
Our performance 6L80 transmission build includes upgraded friction components, a premium piston kit, reinforced shafts, and revised gear and clutch assemblies to withstand ultimate stress. The result is a more reliable and powerful transmission for both street and track use.
The Level 2 rebuild includes internal modifications that optimize gear ratios for smoother and more aggressive shifts under load. This results in improved power transfer, better control, and increased efficiency whether you’re on the road, track, or towing under pressure.
Absolutely. This 6L80E transmission is built for competition and track environments, where performance and reliability are critical. The build is designed to withstand heat, pressure, and extreme driving demands without sacrificing drivability.
Yes, depending on availability, we can supply a transmission core for your rebuild. This is a great option for customers who want to avoid downtime while still receiving a fully built, quality transmission that’s ready to install and perform under heavy loads.