Quick Ship SKU #: SC-68-1-main SunCoast 68RFE Transmission Rebuild Kit 7.5-19 Ram 6.7L Cummins

The SunCoast Category 68RFE transmission rebuild kits are designed with the goal of solving the issues with the 68RFE transmission in a systematic way. SunCoast carefully consider each deficiency and need before developing these kits.

These kits offer you the same recipes that SunCoast uses in their facility when building these units. They strive to provide the most complete series of 68RFE rebuild kits available on the market today, with proven combinations for a successful build.

THE SMART TECH DRUM (CATEGORY 1 ONLY)

The new billet clutch housing holds a physically taller clutch pack, allowing the overdrive apply clutch area to increase 16%. In addition to the increased apply surface area, the thicker clutches and steels increase clutch steel mass by 28%, drastically improving the heat dissipation. The new 68RFE overdrive clutch drum also comes with a top bolt-on plate to help eliminate clutch pack flexing and distortion that contribute to premature failure.

THE V2 BILLET DRUM ASSEMBLY (CATEGORY 2 ONLY)

The V2 68RFE Billet drum is the most revolutionary thing that has happened to the 68RFE. There has been no other project that SunCoast has invested as much research and development in. SunCoast had over 1,000 horsepower on this drum. This is the end-all, be-all of the 68RFE drums, correcting the issues plaguing the overdrive circuit without the annoying squawk that is so common in the 68RFE.

This new 68RFE overdrive billet drum boasts a whopping 24% clamping force over the factory drum, improving apply time and reducing slip engagement dramatically. This new V2 drum also incorporates a newly designed Quad Ring that allows ideal stretch and compression during higher RPM operation to ensure a consistent clutch volume index throughout the life of the transmission. Wall thickness has also been increased in this new drum to improve drum rigidity and reduce lateral movement in the overdrive apply plate. This drum comes completely assembled as a drop-in replacement with all new internals. There is no need for a core, and nothing is used from the previous factory set up. Whether its heavy towing or street use, this SunCoast V2 Drum is the right drum for you.

• 24% improvement in hydraulic clamping force over factory drum
• Increased friction elements in overdrive
• Quad-ring design of inner drum o'ring maintains compression during high RPM's
• Consistent factory like CVI's
• New lip seal style for outer sealing surface for outer seal with increased diameter
• Wall thickness increased to improved drum rigidity
• No Centrifugal apply springs
• Increased wall thickness to reduce lateral movement in overdrive apply plate
• Completely assembled drop-in replacement

THE 2C PISTON

In this 68RFE transmission rebuild kit, SunCoast replaced the factory piston with a much-improved billet piece that also allows for one additional clutch, further increasing surface apply area. 

ZERO CAVITATION FILTER KIT

This new bottom feeder filter kit allows the usage of a torqueflite filter to not only prevent pump cavitation but allow higher volume of fluid to be passed through the system. This will also improve fluid flow in high line pressure situations. The system requires either a deep aluminum Mag-Hytec that we modify or a specific OE pan. This kit comes with a specific OE pan.

THE HIGH-PRESSURE TUNELESS REPROGRAMMIING KIT

This kit provides increased transmission durability for engines with increased horsepower and torque output when aftermarket engine tuners and other modifications are installed. TransGo Tuneless technology provides a re-calibrated pressure curve that mirrors the throttle position and torque demand. Consequently, this elevated pressure curve delivers increased clutch and TCC holding capacity along with shorter cleaner shifts at all throttle openings. The patent-pending internally balanced calibrations provides a progressive clutch apply pressure that increases line pressure across the entire throttle span. As a result, max line pressure is now 210 psi which is a 30% increase over the OEM 160 psi max line! The Kit also addresses the converter clutch apply circuit with a built-in bypass to prevent converter ballooning that comes with elevated line pressure.

• New pressure regulator spring and matching triple valve body separator plate that adds 30% more line pressure across the entire throttle curve to all of the clutch elements, therefore eliminating the need for computer programming
• New drop-in torque converter limit valve system for both early and late pumps, saving the cost of a new pump
• Converter clutch apply pressure bypass to prevent the torque converter from ballooning
• Replacement self-cleaning low/reverse switch valve as well as the end plug
• Optional TCC control valve for use with triple-disc converters for a smoother TCC apply

• Burnt OD frictions due to increased engine horsepower
• Rough lock-up
• TCC slide bang
• TCC slip codes
• Drain-back
• Limp-in mode
• Low line pressure and code P0868

• Patent-pending triple valve body separator plate
• Valve body gaskets
• PR valve spring
• New drop-in torque converter limit valve system
• Drill jig, drill bit and deburring tool
• Heavy duty accumulator plate/cover
• Recalibrated OD accumulator springs and shim
• Replacement self-cleaning low/reverse switch valve as well as the end plug
• TransGo engineered accumulator seals
• TCC recalibration accumulator springs and retainer
• Heavy duty snap ring for input drum
• Optional TCC control valve for use with triple discs converter

THE PISTON REPLACEMENT

Sonnax Accumulator Piston Kit (44894-01K) features two guide seal rings, one at each end of the piston to prevent piston-to-bore scuffing when side loaded. Additionally, the oil sealing ring location is relocated on the piston, allowing it to run in an un-worn portion of the bore and enabling bores with moderate scuffing to be salvaged. Manufactured from 6061 billet aluminum, these pistons will upgrade late-model applications with plastic pistons to prevent transmission failure due to piston breakage.

THE DEEP PAN (CATEGORY 2 ONLY)

What is the easiest upgrade to ensure long service life out of your 68RFE transmission? A simple pan upgrade does wonders. In this kit you will receive a Mag-Hytec deep aluminum pan. This new 68RFE deep aluminum pan will add an additional 4 quarts of transmission fluid. The additional fluid will increase surface area for the fluid, ensuring cool temperatures when towing or hauling. This new deep 68RFE pan also is equipped with a flush mount drain port, allowing quick and easy fluid replacement. This pan is also ribbed, allowing for additional heat dissipation and structural integrity to keep flex at a minimum. This pan is also modified specifically to fit the Suncoast Zero Cavitation filter kit.

THE TORQUE CONVERTER

This SunCoast Torque Converter fits 68RFE transmissions and is engineered to handle all of your every-day duties. Whether you're towing a camper or hauling dirt to a job site, this torque converter is designed to improved vehicle response and give you years of solid, reliable performance. It comes with furnace-brazed fins and hardened turbine splines. The clutches in this converter are carbon-graphitic for precise and accurate lock-up.

The front cover is CNC'd from 4140 HTSR steel to exact tolerances. The factory apply piston on these units is known to be a weak link on the 68RFE torque converters. On the SunCoast Category 1 68RFE Torque Converter, the apply piston is also upgraded to billet material, ensuring zero deflection when applied and precise-lock up consistently for the life of the vehicle