[edb07]

Need a little help with a 4wd diagnoses. I purchased a used 1989 Wrangler and no prior info (towing yard lien sale). When jeep placed into 4 WD it gets wheel hop when going straight, like you are making a hard turn on hard dry surface. Rear end is a Dana 35c but perches appear to be about 1” farther apart then the springs when springs suspended without the carrier attached. Appears to have been changed. It appears that the gears in front may be stock 4.11 and the rear something different. Any help on identify if the rear end was changed would be appreciated. There is not a ratio tag on the rear differential. Did some Dana 35c jeep differential have different spring perch widths? Thanks, this jeep 4wd stuff is new to me.

[Why J?]

IF it is lifted and has bigger tires, the rear may have been regeared. I have heard of people doing this and not regearing the front because they can't afford to at the time but want better on road drivability.

The only way to know for sure is to open up the diffs and count the teeth, you can also put the Jeep on stands and by turning the wheel count the number of drive shaft rotations and get an idea as to what the ratios are.