One Rear Wheel Turn.

[james Callahan]

The one on the right side, should,t both rear wheel turn at the same time?  I have not drove my 1950 dodge coronet in a year I have Bias Coker Tires on I thank they has Flat Spot on them I had to Jack up the Rear End to get the one Wheel to Turn.                                    Thank You  James Callahan                                                                                                                                                                  

[Dartgame]

If its a open rear end (not sure grip or posi as some call it) then if both wheels are off the ground and not in gear or applied parking brake  then one tire will rotate lets say clockwise, the other will turn counter clockwise. And yes if one tire is on the ground, the other can turn as well off the ground.

 

[Mortimer452]

This is pretty standard behavior for an open differential.  Basically, torque gets applied to whichever wheel is easiest to turn.  When you go around a corner, you're always driving with the outside wheel (left wheel on a right turn, right wheel on a left turn)