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Discussion Starter · #1 ·
I've been looking at early 2000 Sahara's and Sports and everything I see has 3.07 rear end. I know there were 3.73 rears optional. Is 3.07 OK for general off road use or is it really too high? No rock climbing, just mud and general off road. I will be putting a 3"-4" lift with 33's on it.
 

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3.07 is a tad high but should be okay with 33s. With that said I would recommend 3.73 or 4.10.
 

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This is the JK forum. However to answer your question. I hated the 3.07s running 30in tires. It would be a absolute turd with 33s and a lift.
 

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:welcome: to the Forum..:wavey:

I've been looking at early 2000 Sahara's and Sports and everything I see has 3.07 rear end. I know there were 3.73 rears optional. Is 3.07 OK for general off road use or is it really too high? No rock climbing, just mud and general off road. I will be putting a 3"-4" lift with 33's on it.
^^^The TJ's are 1997 through 2006.
I had a 2003 TJ, with the 3.73 and 32's. It is a good ratio, for both on and off road. It should also be good for 33's.

I recommend that you stay away from the 3.07 and the Dana 35 rear diff.
Make sure that you go with the Dana 44 and the 3.73 ratio.

download dana35.jpg

download dana 44.jpg

^^^The top is the Dana 35, with the round rubber fill plug. Stay away from that one.
The bottom one is the Dana 44, that's the one that you want. It is a better design, and more durable.

TJ Tech Forum - Jeep Wrangler Forum

^^^You are in the Jk section, 2007 through 2015's.
So just click on this Thread, and you will be in the TJ Tech section.

Good Luck on your TJ search......:thumb:
 

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I ran 33s with the 3.07 for 10 years. It was fine if I never used 5th. Starting in 1st was fine. City Highway fine. It excelled at forestry roads. Climb to the lookout in second, 4H. Come down in 3rd, 4L. And never need to shift or touch the brakes.

The 3.07 gives a much broader speed range to each gear. But OD with anything bigger than stock tires will be useless. Course with the 3.07 and 33s the rpms are just right in 4th for up to 25mpg.

Depends on your use but as a DD for 10 years my YJ with 33s and 3.07s was ideal.

In my current TJR I find myself constantly shifting the 6 speed.
 

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I have the dana 35 with the 3.07 setup and running 31 x 10.5 BFG's Its my daily driver and so far I haven't seen much difference from the stock tires. That being said I don't do any serious wheelin. Mostly easy, dirt trails.
 

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I've been looking at early 2000 Sahara's and Sports and everything I see has 3.07 rear end. I know there were 3.73 rears optional. Is 3.07 OK for general off road use or is it really too high? No rock climbing, just mud and general off road. I will be putting a 3"-4" lift with 33's on it.
Steer clear of the 3.07 gear ratio with 33's unless you are planning a regear. With a 5 speed and 33's you will only be able to use 5th gear above 65mph and have very little power even getting there. 1st gear will also be way high and terrible off road. I ran mine like that for about a month before regearing to 4.56.

3.73's with 33's, not as bad, but still not optimum. 4.10's, depends on engine and transmission you're talking about.

If you are looking to buy for serious off road trails, look for one with a Dana 44 rear end.
 

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Discussion Starter · #9 ·
Ive seen a few used with Dana 44 rear but Dana 30 on the front. Should the front be changed too?
 

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If my D35 ever does go out then I will look to a D44 and step up the gears a bit to welcome some 33's. But for now it works just fine for me. I can't get too crazy with mods because it still has to tow nicely behind the motorhome. That is first and foremost.
 

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Ive seen a few used with Dana 44 rear but Dana 30 on the front. Should the front be changed too?
They have to be geared the same, but the D30 (as a differential) is okay to have in the front...if that's what you're asking.

Unless you're looking at a Rubicon model, you will either find D35 in the back and D30 in the front, or D44 in back and D30 in front.
 

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Ive seen a few used with Dana 44 rear but Dana 30 on the front. Should the front be changed too?
2WD thru the D44 takes the full load.
4WD thru the D30 is only taking half the load.
That's why they build with a stronger rear axle.
 
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