Can you put it on a lift and recreate it? Perhaps remove wheels and run in 4wd while turning the steering while a mechanic searches for the popping. It could be a suspension bushing moving in and out. They are pressed in can come loose and make a hell of a pop/bang. Could happen on any front end, not just a Ram.
Inertia Spartan + cam, Circle D 3,000 stall ,Sonnax line pressure booster, MagHytec 68RE pan,and differential cover, Vararam, JBA's with cut outs, Rancho 9000's, Helwig rear sway bar,3:92's, extra rear leaf,Line-X Bedliner,GY Armortracs, 245,000 miles To Hell and back. 14.2/96 mph NEDW