ATS Diesel 07.5-11 RAM Cummins 6.7L 4WD 68RFE Transmission Package - Stage 1

The RAM 68-RFE transmission was designed to be inexpensive to manufacture, leading to corners being cut in size and material quality. ATS Diesel has developed a combined technology utilizing recalibration of the hydraulic circuits inside the transmission, including revamped accumulator rates, reprogrammed clutch to clutch apply and release timings, and line pressure rise rate to perfectly match the torque output of the engine. These enhancements, along with other key hydraulic modifications, ensure the clutch packs have the correct apply and release rates. The transmission hard parts have many limiting weaknesses that do not allow for increased power levels over stock, specifically light-duty shafts and hubs, and a low one-way sprag. These issues are addressed by ATS, starting with the pump assembly, which has a redesigned torque converter regulator valve to prevent overpressure and ballooning, and to regulate minimum converter charge for proper cooling and lubrication. The main pressure regulator circuit is modified for a broader pressure range. Clutch modifications include increased surface area for Under Drive (Forward), Over Drive, 2C, and 4C clutch packs. The weak mechanical low one-way sprag is replaced with a stronger roller clutch design. The valve body features a BilletProof Channel Plate, a stress-relieved 1-inch thick aluminum tooling plate, precisely CNC machined to eliminate warping and cross-leaks. Critical channels are enlarged for increased fluid to clutch packs. The package also addresses shafts by reinforcing the forward hub/shaft and intermediate hub/shaft, with an optional billet input shaft for higher stages. The transmission case is strengthened with an optional heavy-duty transmission pan that increases fluid capacity by 5 quarts. The ATS Co-Pilot Transmission Controller is included, which addresses small clutch packs, weak hard parts, constant slip torque converter lock-up, and inadequate line pressure, which are common issues in stock 68-RFE transmissions. The Co-Pilot controls line pressure, clutch timing, and more aggressively applies the converter clutch under high torque situations.