Are all 4.10 gears the same for a Dana 30?

rescu2000 · **Posted:** Sat Jul 12, 2008 4:23 pm

I can get a set of new Dana 30 4.10 gears AND a set of new 8.25" gears that a guy was going to put in a cherokee. Will the 8.25" work in our axles? Also, will the dana 30's fit in the Dana 30a (and the Dana HP30 that I will swap in later)? I can get both sets for $150... they are still in the box.

Rescu2000

modular · **Posted:** Sat Jul 12, 2008 4:43 pm

You need to know if the XJ has a 27 or 29 spline rear end with the KJ being a 29 spline. The XJ could have either. As long as the gears are for a 29 spline Chrylser 8.25" they will work in the rearend.

The D30a's ring and pinion is just dimensionally different that standard D30 gears will not work. Something about the length of the pinion I think?

rescu2000 · **Posted:** Sat Jul 12, 2008 4:50 pm

Yea, the pinion is about 1 Inch longer. I just don't understand how these things work well enough to know that the longer pinion would cause the gear not to work. I should pick up the 30 also though, just to drop it in when I do the axle swap.
Rescu2000

rescu2000 · **Posted:** Sat Jul 12, 2008 4:59 pm

It's a 93 cherokee that they fit. It looks like that is a 27 spline. Drat! I would have bought both of them. I found a Dana 30 SFA for $50....

tjkj2002 · **Posted:** Sat Jul 12, 2008 8:24 pm

rescu2000 wrote:

It's a 93 cherokee that they fit. It looks like that is a 27 spline. Drat! I would have bought both of them. I found a Dana 30 SFA for $50....

If it's not a HP D30(high pinion) is not worth $50.

Are all 4.10 gears the same for a Dana 30?

Who is online