I recently bought a new travel trailer and a used truck to use as the tow vehicle. When I bought the truck I was told it had a 3.73 rear diff... anyhow after some investigation it has the 3.42. That drops the tow capacity down to 6700lbs from 7700l...
blt2ski wrote:Not to be a buster on this idea.......Depending upon the gear ring size, going lower than a 4.10 to 4.56 or even a 4.88, may put the teeth too small. So yes, you get use of OD towing. BUT, if you stomp on the go pedal in 1st gear, you m...
Looks like 4.88 would probably be more appropriate for my rig. OD would work well for cruising, 3rd would be a good hill gear.Ok sounds like this is a no brainer especially since the truck is only 2WD so it's not too pricey.I'll see about getting it...
I'm going to have to play around with it the next time I tow to see if 2300rpm is enough. I'm starting to lean towards 4.88. 2500rpm is definitely the sweet spot when I'm cruising.Seems like a massive ratio change, but the calculations all look good...
Groover wrote:With a 4 speed transmission you could end up in a situation where with the new rear end you will get 2000rpm in 4th and 2800rpm in 3rd at highway speeds and neither one is really comfortable. You may want to evaluate that before making...
Yeah I would need to go to a 4.56 to make use of OD I think. Looks like I'd be at roughly 2300rpm at 65mph using 4.56 gears. That probably makes more sense than the 4.10s.This truck is used exclusively as a tow vehicle so I don't care how it perform...
