I’m not from Montana but I live here. And I’m finding that 4.88s are not that useful for most people. If I were to do it again. I would do 5.29s and add a 10% underdrive if I did 37s.
I run a 34ish. I spent my whole drive down to moab wishing the 80 had 5.29s. To stay in the power band going up hills, it had to be screaming going 65 in 3rd or I had to be going like 75-80mph to keep the over drive on and sometimes the hills were a little to big😂
I’m eventually going to do the...
4.88s just left me wishing that I had 5.29 and I don’t tow anything. I’d go with the deepest gearing available. Also I wouldn’t worry about sheering a pinion. Our pinions are small in comparison to a 14 bolt…. but it’s a 1,200 lb trailer. It’ll be fine