Ram 2500 6.4 Hemi Towing a Fifth Wheel
I'm sure this topic has been completely exhausted but wanted to specifically ask about towing a fifth with my 2018 Ram 2500 with the 6.4 Hemi & 4.10 gearing. I currently tow a Travel Trailer (vibe 308...
Forum Discussion
steveb48880 wrote:
I found it worked better to shift myself and drop it into 4th before we started to climb. Sometimes it would drop down into 3rd.
This is the key to getting the most out of the poor programming and design of the 66rfe tranny. It has a REALLY annoying habit of waiting far too long to downshift and then slamming down two gears. For me with 3.73 gears and a 12,000# 5th wheel I'm in 4th a lot and is slams down into 2nd. I just shift it manually and it makes for a much smoother experience.
