I have a 2007.5 Dodge Ram 3500 dually 6.7 g56 with mp271 transfer case (same as np271 just under a joined name change) I recently had the chain stretch and come off the gears in the transfer case that caused a ticking noise. go the transfer case rebuilt (myself) with new chain. put about 70 miles on the truck and the noise started again. I pulled over got under it and spun the flange for the front drive shaft. ( needs new u joints on front drive shaft so its not on yet) the chain doesn't seem to b loose and when I shift into 4wd the front flange goes into 4wd so I don't see a problem with that again. (will b pulling case off just to make sure tho) as I was driving back home the noise went from a chain like tick, to a solid tick, to a squeak, back to a solid tick. but now it sounds more from the front end then the transfer case. anyone have any ideas where to start looking?? thanks in advance!

 

Ball joint, toe rods, axle u joints.