The factory 68-RFE pump housing is not large enough to supply the transmission with the required oil volume that it needs to keep pressure high at low engine RPMs. This causes the 68RFE transmission to run low on oil pressure while causing or pulling heavy loads in 4th, 5th and 6th gears.
The low oil volume and pressure causes the Over Drive clutches to slip causing 5th and 6th gear failure. The other issue with the factory pump is the cast material that used is weak and unstable. The inexpensive cast material warps over time causing hydraulic cross leaks between the pump half and the steel separator plate.
These cross leaks cause many issues that end in transmission failure. Some of these issues are transmission over heating, converter clutch apply when the vehicle is stopped, Rationality codes, cooler flow loss, delayed engagement to name a few.
ATS has redesigned the 68RFE pump to eliminate all of these issues and it's manufactured out of Billet tool grade Aluminum. The tolerances are controlled to provide maximum oil pressure and volume.
The tight tolerances guarantee our billet pump will provide 100 percent of the pressure that the TCM is requesting during low engine RPM operation ensuring the clutch packs have adequate pressure to keep them clamped even in the worse conditions such as hot operation and low engine RPM while pulling extreme loads.
The heart of the 68RFE transmission is the pump, installing the ATS Billet 68-RFE Pump is one of the key elements to having a reliable 68RFE Transmission. The 314-190-2326 part number is the Billet pump housing only, it comes with the two idler pins and performance pump bushing.
This part is intended to be used with the factory pump gears. We offer the complete pump assembly, separator plate and pump gears as a different part number.
