2020 Ram 2500 Big Horn 6.7 Cummins already on 37s, repo out of a yard in Texas

same truck family as mine so i can be specific. a 2020 2500 is a coil sprung solid front axle, and a 5 inch lift on these lives or dies on the track bar. grab the front tires at 9 and 3 and feel for a clunk, and watch the track bar axle end bracket while somebody turns the wheel. a loose or worn track bar there is the usual vibration and the start of a wobble, same as the F-250.

for the 65 mph buzz under power, check the rear pinion angle. a lifted coil Ram rear needs the lower control arm length set so the pinion points just under the driveshaft, and if the installer did not touch it you get that cruise buzz. and get it on an alignment rack for caster regardless, because a 5 inch Ram that is low on caster wanders and eats the inside of those 37s. do the hand checks first and tell me what has play.

post the shock photos and i will try to ID the kit like i did on the other thread. a 5 inch on a 2500 is usually a coil spacer or a new coil with a track bar relocation bracket, and the brand of shock tells you how good the rest probably is. also look at your front tires right now, uneven inside wear means it has been run out of alignment since the lift, which on a repo is likely because the last owner stopped spending money on it before they stopped paying.

and a 13.50 wide tire on a Big Horn, make sure it is not rubbing the sway bar or the firewall at full lock, wide 37s on a 5 inch sometimes need a little trimming or a bump stop and the previous owner may or may not have sorted it.

close to my truck. the 6.7 Cummins on 37s with the stock gears pulls fine unloaded but you will feel it towing heavy in the heat down there, so drive it loaded before you decide whether you need to regear. mine has 3.42 and 37s and i did 4.10, but a lot of guys leave the Cummins alone because the torque hides it better than a gas motor.

and check the diesel specific stuff on any repo, when was the fuel filter last done, does it have the factory emissions still on it or did somebody mess with it, because a deleted truck you did not delete is a headache you inherit. ask for a photo of the engine bay and the exhaust if you did not already.

two lifted repo diesels on this board in one month and both came down to a track bar and an alignment. that is the pattern worth writing down for anybody reading. the lifts themselves were fine, the thing that was wrong was the maintenance the last owner quit doing, and on a lifted truck that shows up first in the steering and the alignment.

the three day email is real and worth knowing, but a slow reply on a 45,000 dollar truck that turned out solid is a small complaint. put your bid in early enough that you are not waiting on a photo the morning it closes and the slow email stops mattering.

good writeup and an honest one, the slow email included. the fix list is becoming a sticky without me writing it. buy the lifted repo, then budget a track bar and an alignment with caster set, and inspect for the deferred maintenance the last owner skipped. do that and the conaway auction gets you a built truck for well under a lift shop's price. skip it and you drive it wrong and blame the truck.

one add for the next reader, bid early so you are not hostage to a photo request at the last minute. these lender yards turn over weekly and there is always another diesel, so you never have to chase one lot. mark this solved, and post a tire wear check in a few thousand miles to make sure that alignment held.