65RFE and 66RFE
For the 2012 model year, the 545RFE was recalibrated and introduced as the 65RFE in 1500 Ram models. With the exception of an improved torque converter, it is physically the same as its predecessor. The key difference in the 65RFE is the ability to use all six forward gears in sequence when using Electronic Range Select mode. In normal drive mode, however, the 65RFE uses the shift pattern of the 545RFE; thus never using 2nd and 3rd gears in succession. 2500 and 3500 models with gas engines received the 66RFE, a hybrid of 68RFE internals (including the gearset) packaged in a 545RFE case.
Gear Ratios:
- 65RFE
- 1st 3.00:1
- 2nd 1.67:1
- 3rd 1.50:1
- 4th 1.00:1
- 5th 0.75:1
- 6th 0.67:1
- Reverse 3.00:1
- 66RFE
- 1st 3.231:1
- 2nd 1.837:1
- 3rd 1.410:1
- 4th 1.000:1
- 5th 0.816:1
- 6th 0.625:1
- Reverse 4.444:1
Applications:
- 65RFE
- 2012 Dodge Durango (5.7L)
- 2012 Jeep Grand Cherokee (5.7L)
- 2012 Ram 1500 (4.7L, 5.7L)
- 66RFE
- 2012 Ram 2500 (5.7L)
- 2012 Ram Chassis Cab 3500 (5.7L)
- 2012 Dodge Power Wagon
Read more about this topic: Chrysler RFE Transmission