I have a 93 xj with the dana 30 it is stock I'm wanting to know is there a dominant drive wheel when it is engaged I have looked every where for the answer to no avail does anyone know please

 

Read up on how an 'open' differential works. Whichever tire has the least amount of traction will get the power sent to it. That's why having a locked differential is very nice to have while in an offroad situation.

 

If you're asking that because when you jack it up and put it in gear only one wheel spins, it could be because your brakes need some attention.

 

Normal.