Axle Identification

[TerryMason]

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

 

[TerryMason]

Jeep Axle Identification

<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD width="100%">

<TABLE width=490 border=1><TBODY><TR><TD width=80>

</TD><TD>AMC Model 20 Rear Axle

<TABLE border=0><TBODY><TR><TD width="100%">1976-86 CJ</TD></TR></TBODY></TABLE>
​

</TD></TR><TR><TD width=80>

</TD><TD>Dana Model 25, 27, 30 Front

Axle​

<TABLE border=0><TBODY><TR><TD width="100%">Model 25

1945-64 CJ​

</TD></TR><TR><TD width="100%">Model 27

1965-71 CJ​

</TD></TR><TR><TD width="100%">Model 30

1972-86 CJ​

</TD></TR><TR><TD width="100%">Model 30

Disconnect 1987-95 YJ Wrangler​

</TD></TR><TR><TD width="100%">Model 30 1997

TJ Wrangler​

</TD></TR></TBODY></TABLE>
​

</TD></TR><TR><TD width=80>

</TD><TD>Dana Model 35 Rear Axle

<TABLE border=0><TBODY><TR><TD width="100%">1987-95 YJ

Wrangler​

</TD></TR><TR><TD width="100%">1997 TJ

Wrangler​

</TD></TR></TBODY></TABLE>​

​

</TD></TR><TR><TD width=80>

</TD><TD>Dana Model 44 Rear Axle

<TABLE border=0><TBODY><TR><TD width="100%">1948-75 CJ</TD></TR><TR><TD width="100%">1986 CJ7</TD></TR><TR><TD width="100%">1997 TJ

Wrangler​

</TD></TR></TBODY></TABLE>​

​

</TD></TR></TBODY></TABLE>

Axle identification

chart​

<TABLE width=490><TBODY><TR><TD>Model</TD><TD>Year</TD><TD>Front

Axle (# of splines)​

</TD><TD>Rear

Axle (# of splines)​

</TD></TR><TR><TD align=middle rowSpan=8>CJ</TD><TD align=middle>76-86</TD><TD align=middle>Dana 30 (27)</TD><TD align=middle>AMC Model 20</TD></TR><TR><TD align=middle>86</TD><TD align=middle>Dana 30 (27)</TD><TD align=middle>Dana 44 (30)</TD></TR><TR><TD align=middle>72-75</TD><TD align=middle>Dana 30 (27)</TD><TD align=middle>Dana 44 (30)</TD></TR><TR><TD align=middle>68-71</TD><TD align=middle>Dana 27 (10)</TD><TD align=middle>Dana 44 (19)</TD></TR><TR><TD align=middle>64-71</TD><TD align=middle>Dana 27 (10)</TD><TD align=middle>Dana 44 (10)</TD></TR><TR><TD align=middle>64-69</TD><TD align=middle>Dana 27 (10)</TD><TD align=middle>Dana 44 (19)</TD></TR><TR><TD align=middle>45-65</TD><TD align=middle>Dana 25 (10)</TD><TD align=middle>Dana 44 (10)</TD></TR><TR><TD align=middle>41-48</TD><TD align=middle>Dana 25 (10)</TD><TD align=middle>Dana 44 (10)</TD></TR><TR><TD align=middle>Wrangler</TD><TD align=middle>97-98</TD><TD align=middle>

​

</TD><TD align=middle>Dana 35 (27)</TD></TR><TR><TD align=middle>Wrangler w/ ABS

Brakes​

</TD><TD align=middle>97-98</TD><TD align=middle>

​

</TD><TD align=middle>Dana 35 (27)</TD></TR><TR><TD align=middle>Wrangler</TD><TD align=middle>87-96</TD><TD align=middle>Dana 30 (27)</TD><TD align=middle>Dana 35 (27)</TD></TR><TR><TD align=middle>Wrangler w/ ABS

Brakes​

</TD><TD align=middle>93-96</TD><TD align=middle>Dana 30 (27)</TD><TD align=middle>Dana 35 (27)</TD></TR></TBODY></TABLE>​

​

</TD></TR></TBODY></TABLE>

 

[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.
8)

 

[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