Monday thru Friday 7:00 am to 5:00 pm CST, Closed on Weekends
Filters
Close

6L80 (One-Piece) 4-5-6 Billet Shaft & Hub for use with stock dimension clutches (36 tooth clutches) & 4-5-6 Clutch Kit - Level 2.5

Detailed Instructions Included | FREE UPS Domestic Ground Shipping

Kit is designed with 36 tooth 4-5-6 clutch plates. CDT's Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-36) is included in this kit. This clutch pack provides 17% more surface area than a stock clutch set up.
Availability: In stock
In stock items ship within 1-2 business days.
Picture for representation purposes only. Actual contents may vary as we continue to develop our products.

Before adding this product to your shopping cart, please enter the following information:

*
*
*
*
*
$1,150.00

SKU: 104680-36/W456CK-2.5-P

104680-36 (BILLET INTERMEDIATE SHAFT & 4-5-6 CLUTCH HUB) One piece 300M steel forging is heat-treated and shot-peened for maximum durability. This shaft doubles oil flow to the clutch pack for improved resistance to heat and longer clutch life. It is designed for use with the OE dampener to minimize risk of chirp/squawk. The hub is designed for OE steels and clutches.

6L80 Level 2.5, 4-5-6 CLUTCH KIT:

7 Borg Warner® Clutches
6 Lindered Steel Plates 
1 Apply Plate
1 Backing Plate
1 Snap Ring
2 Bonded Pistons

CDT456L2.5/80-P This kit offers 17% more clutch apply area than stock. Lindered is a chemical and heat treatment process that hardens the steel, which results in less wear.

transmission specs worksheet

 

  • Transmission holding fixture
  • Calipers
  • Dial Indicator Set
  • Bushing Drivers & Arbor Press for Bushing Installation (Bushings should only be replaced as needed)
  • Sealing Ring Protector and Sizer
  • Various Clutch Spring Compressors
  • Output Carrier/Shaft Lifting Tool
  • 1-2-3-4 & 3-5-R Clutch Housing Installer
  • Large Snap-Ring Pliers
  • Pump Alignment Tool

 

Upgraded Parts If you have an early pump cover (stator) that does not utilize anti-rotational tabs on the sealing rings or an early 1-2-3-4/3-5-R clutch housing that does not have the matrix stamp you will need to install a factory upgraded pump cover and clutch housing.

Transmission Tuning Please understand that proper tuning of the TCM and ECM are mandatory. All 6L80/90’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.

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 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.

 

Limited Warranty Statement

Circle D Transmission’s Rebuild Kits carry a 1 year, parts only warranty, exclusively against manufacturer’s defects. Warranty period begins at date of purchase. There is no warranty under the conditions listed below. This includes, but not limited to:

Improperly Stored
Improperly Installed
Improperly Tuned (EMC or TCM)
Misapplication
Altered, either by Owner or Their Technician
Torque Converter Failure
Inadequate Flushing of Transmission Cooler
Improper Fluid Level
Water/Engine Coolant in Transmission
Excessive Power
Accident
Neglect

Circle D Transmission will not pay for any fluids replaced in the event of a Kit failure.
Under no circumstances shall there be any labor warranty or other warranty coverage on Circle D Transmission Kits beyond the replacement of individual Kit components. We will not provide you with any cash refund except as many be required by law. Consequential and incidental damages are not recoverable under this warranty and are expressly excluded.

There is no warranty on broken parts such as, but not limited to: twisted splines, broken shafts or broken planetaries.

Warranty issues will be considered on an individual basis.