This 750 HP 68RFE transmission is for the 2007.5-2018 Ram owner whose truck has outgrown a standard performance rebuild. A custom billet high-capacity overdrive drum provides approximately 50 percent greater holding power, working with a billet input shaft, a Sonnax heavy-duty overdrive shaft, and Alto G3 clutches and steels with increased 2nd and 4th clutch pack capacity.

The hydraulic side is fully addressed - a Liberty custom-built high-pressure billet valve body, new SSV valves, a custom bonded separator plate, a new heat-treated separator plate, a billet aluminum channel plate, and billet 3-ring accumulators rated for 225 PSI. The Liberty modified front pump is vacuum tested and repaired as required, and a deep-capacity aluminum pan manages fluid temperature under sustained load.

Moving up from a 550 build buys two things: more holding capacity and better heat control. The custom billet drum exceeds what a catalog billet drum permits, and once the drum is no longer the failure point the overdrive shaft becomes the next constraint - which is why the Sonnax heavy-duty shaft is included rather than optional. Alto G3 friction material tolerates repeated high-load engagement without glazing, the failure mode that ends lesser clutches on trucks working in heat.

A custom bonded separator plate paired with a heat-treated plate means the hydraulic circuits are purpose-matched to this build instead of adapted from factory specifications. Aluminum pan material sheds heat more effectively than steel while adding fluid volume. Also included are new bonded pistons, a white-top solenoid pack, a heavy-duty roller-style low-reverse sprag, new factory speed sensors and line-pressure sensor, a TIG-welded input planetary, and new Mopar filters.

Built for 35 Inch and larger tires, heavy towing, and demanding street use in Dodge Ram 2500 and 3500 trucks, this 68RFE transmission carries a 2 Year Unlimited Mile warranty with 24 months on the converter. Strength and clutch capacity where a basic rebuild runs out.

Details:

• Transmission: 68RFE
• Horsepower Rating: 750Hp
• Engine Manufacturer: Cummins
• Engine Years: 2007.5-2018
• Engine Displacement: 6.7 Liter
• Fuel Type: Diesel
• Recommended Use: Heavy Towing, Performance Driving, Hard Work, Demanding Street
• Torque Converter: Goerend Triple-Disc Low-Stall Billet
• Torque Converter Warranty: 24 Months
• Valve Body: Liberty Custom-Built High-Pressure Billet
• Clutch Package: Alto G3 Clutches And Steels With Increased 2nd And 4th Holding Capacity
• Case Finish: Bead-Blasted Case, High-Quality Purple Enamel
• Color: Purple
• Condition: Remanufactured
• Input Shaft: Billet
• Transmission Pan: Deep Capacity Aluminum
• Max Tire Size: 35 Inch And Larger
• Line Pressure: 225 PSI
• Warranty: 2 Year Unlimited Miles

Included Features:

• Liberty modified front pump, fully vacuum tested and repaired as required
• New heat-treated separator plate
• High-performance UD, reverse, and low-reverse clutch and steel package
• All-new bearings
• New gaskets and seals
• New bonded pistons
• New white-top solenoid pack
• Heavy-duty roller-style L/R sprag
• New OE speed sensors and line-pressure sensor
• TIG-welded input planetary
• New Mopar filters
• Deep-capacity aluminum transmission pan
• Bead-blasted transmission case
• High-quality enamel finish

Build Specifications:

• Billet flexplate
• Billet input shaft
• Sonnax HD overdrive shaft
• Goerend triple-disc low-stall billet torque converter
• Liberty custom-built high-pressure billet valve body
• New SSV valves
• Fully vacuum-tested fluid pump and valve-body circuits
• Custom bonded separator plate
• Billet aluminum channel plate
• Billet aluminum 2C piston
• Billet 3-ring accumulators
• Custom billet high-capacity overdrive drum with approximately 50 percent greater holding power
• Alto G3 clutches and steels with increased holding capacity in the 2nd and 4th clutch packs
• Upgraded 4C snap-ring retainer
• Blueprint inspection of hard parts
• Precision assembly
• 225 PSI line-pressure compatible