Lynn Gräber

Found a 98 with a 8.25 I’m considering pulling to replace my 01 d35. The 8.25 is on a 2wd 4 cylinder. Mine is a 4wd i6. If it’s an automatic like mine, this should still be a pretty direct swap right? I know manuals have a different gear ratio.

what do I do about abs?

Lynn Gräber

Also, any tips on preparing for pull a part welcome. My first time. Haha.

tech

You have to get rid of the ABS and you will need to match the gears front to rear the drive shaft mite need to be changed , 8.25 takes a little shorter drive shaft but if you have a lift it should be ok

Lynn Gräber

I just put a new RC rear shaft on with a SYE. 4.5 inch lift. Guess I’m borderline stock vs modified forum now. Never know where to post.

tech

Ya that should be fine also the u bolts and spring plate are different .

lawsoncl

I would check the gear ration before you get too excited. The 4-cyl is probably a manual, which should have the same ratio as your I6 auto.

Axle gear ratios
Jeep XJs came in several standard gearing ratios:

• 3.07:1, manual transmission, I6 engine.
• 3.54:1, automatic transmission, I6 engine with Dana 44 rear differential
• 3.54:1, manual transmission, I4 engine with Dana 35 rear differential
• 3.55:1, automatic transmission, I6, inline 6 engines; manual transmission, I4 engine
• 3.73:1, automatic transmission, I6, tow package, UpCountry package, 2.5 VM diesel manual
• 4.10:1, 2.5L I4 engine, early models with tow package
• 4.56:1, automatic transmission, I4, offroad or tow package

PJB

If everything checks out, it's pretty much a direct swap. but you will 3" U bolts, since the axle housing is larger, and think out rear disc brakes, since you will be disconnecting the rear brake lines.