Rear end clunk turning left

Hey guys jumped in the duster today and notice every now and then when making a hard left turn from a stop I get a clunk from the rear drivers side. Feels like rear end noise. It only clunks/pops once during the turn
Also I sometimes notice black tire marks on the ground following that tire.( rear end isn't welded locked).
I bought the rear used. 489 case. Posi clutch style. 4.30 gear. Running 315/60/15 tire.
Any thoughts?