Non locking or limited slip (open differential) this is normal. The wheel with the least resistance will spin faster, same in the air as in the mud.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022