
I thrive for information about Jeeps. I enjoy learning about each different model, the differences and especially the history. It's a hobby of mine. In fact, I wish there was a degree offered in Jeeps because I would sign up.
My friend Kevin approached me a few weeks ago and asked me what kind of axles he has under his 92 wrangler. Being a Jeep nerd, I immediately gave him an answer, "You've got a Dana 30 in the front and Dana 35 on the rear." Now, was I correct? Of course I was. What do you think? Nevertheless he seemed skeptical of my response, so I'm dedicating this post on Jeep axles. Kevin, this one is for you.
I can't tell you how many times people have mentioned that I should get rid of my Dana 30 front axle and replace it with a Dana 44. I have also been told how I should get rid of my Cherokee and start off with a Wrangler. Yes, I agree with both comments. However, this all depends on what type offroading a person does. You obviously don't need Rockwell 2 1/2 axles on your 32 inch daily driver. Although there isn't an exact answer to how strong of axles you need, we need to understand how aggressive of offroading you plan on doing. Are you a driver that will push the rig to its limits on each trip? Or are you one to hold back and leave the dents and rollovers for others? Do you plan on placing bigger tires on Jeep? But enough talking, let's get into specs.
Here are a few Jeeps and the types of axle they came with from the factory.
97-05 TJLow-pinion Dana 30 front, Dana 35 or 44 rear. Rubicon had Dana 44 front and rear87-95 YJHigh-pinion Dana 30 front with axle disconnect, Dana 35 rear81-85 CJ8Dana 30 front, AMC 20 rear76-86 CJ7
Dana 30 front, AMC 20 rear, (Dana 44 on 86 models)76-83 CJ5Dana 30 front AMC 20 rear72-75 CJ5Dana 30 front Dana 44 rear66-71 CJ5Dana 27 front, Dana 44 rear55-65 CJ5Dana 25 front, Dana 44 rearNow, let's talk your Jeep. My guess is that you still have the original axles since the Jeep has 32 inch tires... (No need for Dana 44's, with those tires)
Front AxleGear ratio: 3.07
Ring-gear diameter: 7.125inches
Axleshaft spline count: 27
Axleshaft diameter: 1.16 inch
Axle joint: 260
Wheel-bolt pattern: 5 on 4 1/2
Knuckle type: Open
Full or semifloating: full-floating
Differential Cover: 10 bolts
Problems when stock: Bent tubes, weak axle joints
Recommended maximum tire size: 33-35 inches
Rear AxleGear ratio: 3.07
Ring-gear diameter: 7.562 inches
Axleshaft spline count: 27
Axleshaft diameter: 1.13 inches
Wheel-bolt pattern: 5 on 4 1/2
Full or semi-floating: semi-floating
Differential cover: 10 bolts
Problems when stock: Overall weakness
Recommended maximum tire size: 32-33