Axle Identification

[TerryMason]

Over the years Jeep has put several axles in their vehicles. Below is an overivew of the various models.

[TerryMason]

AMC Model 20 Rear Axle 1976-86 CJ Dana Model 25, 27, 30 Front Axle Model 25 1945-64 CJ Model 27 1965-71 CJ Model 30 1972-86 CJ Model 30 Disconnect 1987-95 YJ Wrangler Model 30 1997 TJ Wrangler Dana Model 35 Rear Axle 1987-95 YJ Wrangler 1997 TJ Wrangler Dana Model 44 Rear Axle 1948-75 CJ 1986 CJ7 1997 TJ Wrangler Axle identification chart Model Year Front Axle (# of splines) Rear Axle (# of splines) CJ 76-86 Dana 30 (27) AMC Model 20 86 Dana 30 (27) Dana 44 (30) 72-75 Dana 30 (27) Dana 44 (30) 68-71 Dana 27 (10) Dana 44 (19) 64-71 Dana 27 (10) Dana 44 (10) 64-69 Dana 27 (10) Dana 44 (19) 45-65 Dana 25 (10) Dana 44 (10) 41-48 Dana 25 (10) Dana 44 (10) Wrangler 97-98 Dana 35 (27) Wrangler w/ ABS Brakes 97-98 Dana 35 (27) Wrangler 87-96 Dana 30 (27) Dana 35 (27) Wrangler w/ ABS Brakes 93-96 Dana 30 (27) Dana 35 (27)

[tom_TJ_performance]

The XJ and MJ are/were available with a Dana 44 with the heavy duty towing option or metric ton option. I'm not sure if the XJ always came with a Dana 44 when the towing option was ordered. The axles will interchange between the models and use a 5 on 4.5" wheel bolt pattern. This axle could also be a good low buck swap for a Wrangler YJ, but the sping perches would need to be moved. The shafts are one piece and 30 spline.

[rudedog14]

I need reassurance before ordering gear sets. Please confirm that these are Dana 30 and Dana 35.

[wwch99tj]

I need reassurance before ordering gear sets. Please confirm that these are Dana 30 and Dana 35.

Take a pic further out, of the whole diff, but beings they have 410/411 I'll assume 4 banger?
Yes they (4 bangers) come stock with Dana 30/35

Sent from my note2 using my thumb

[rudedog14]

Yes, it is a 4 banger. The previous owner installed 35" tires without regearing it. I would like to go with 4.56 or 4.88 to regain some of the performance. I will take a couple more pictures. I really do appreciate the help being new to this.

[carnuck]

2003 TJ D35 rear and D30 front low pinion. If I were you and it's being lifted, I would get an XJ front diff to swap in (high pinion is better driveshaft angle for lifting) Maybe find someone with a 4.0L TJ that wants those nice gears and swap diffs with some $ in your pocket you can put towards your new gears.

[Bounty__Hunter]

Yes, it is a 4 banger. The previous owner installed 35" tires without regearing it. I would like to go with 4.56 or 4.88 to regain some of the performance. I will take a couple more pictures. I really do appreciate the help being new to this.

You won't really notice going from 4.11 to 4.56, not enough of a change to warrant the cost. Go with 4.88, that's as low as you can go in stock axles, and it still isn't low enough. I run 5.38 with my 2.5L 5spd on 35" tires and it's about right.

Carnuck, not only are the driveshaft angles better with a front high pinion, but the gear mesh is a stronger setup because you're running on the drive side of the ring gear, not the coast side.

[rudedog14]

Wow. This is a lot of information. Thank you. Decisions.....decisions.

[driver6]

Thanks for the info, great