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Old December 21st, 2006, 09:54 AM   #1
Weasal
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Default Recommended Gears

Ive currently got 3.07's in my TJ with a 4.0 on 33's. Was running that for about a year and a half as my DD until the carrier recently busted and took some of the teeth with it.

I want to go to bigger gears but not sure if I should go up to 3.73 or 4.10. Just not sure how much it will kill me at highway speeds and what not, as I am usually driving an hour and a half on the e-way every other weekend.
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Old December 21st, 2006, 10:00 AM   #2
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4.10 is generally considered ideal for 33's, but...


Is it an automatic or a manual?

If its an automatic, what year is it?
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Old December 21st, 2006, 10:02 AM   #3
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manual
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Old December 21st, 2006, 10:31 AM   #4
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I would say you'll be fine with 4.10's, unless you think your TJ will grow in the next year or so. That's a decent chunk of change to drop on the axles you have - you'll need a new front carrier also.
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Old December 21st, 2006, 10:33 AM   #5
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4:10's will be ideal or if you want good MPG and good street use or maybe even 4:56's
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Old December 21st, 2006, 10:35 AM   #6
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4:10's or 4:56's. i have some 4:56's for sale for a d-30 if you want to go that low. 4:10's should be enough for you w/ a 4.0 though.
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Old December 21st, 2006, 10:38 AM   #7
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I would say you'll be fine with 4.10's, unless you think your TJ will grow in the next year or so. That's a decent chunk of change to drop on the axles you have - you'll need a new front carrier also.
I dont think ill ever go bigger, but maybe i should maybe price out/figure out a way to do a dana 44 instead?
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Old December 21st, 2006, 10:58 AM   #8
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If you're going to spend the money, that would be a better investment. The easiest way would be to find a TJ D44 rear, of course. You won't find one with factory 4.10's outside of a Rubi, but you can get a 3.73 and then only have to change the front gears. You might even be able to find a good used 3.73 front gearset & carrier to minimize the cost impact. 3.08 to 3.73 will feel a lot better, too.
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Old December 21st, 2006, 11:03 AM   #9
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If you're going to spend the money, that would be a better investment. The easiest way would be to find a TJ D44 rear, of course. You won't find one with factory 4.10's outside of a Rubi, but you can get a 3.73 and then only have to change the front gears. You might even be able to find a good used 3.73 front gearset & carrier to minimize the cost impact. 3.08 to 3.73 will feel a lot better, too.
Do i just need to get lucky and find a classified/boards type sale for D44 or is there somewhere easier to find one?
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Old December 21st, 2006, 11:03 AM   #10
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I've got 4.56s with a 5-speed 4.0 TJ on 33s.

They're a little low for a DD - I turn 3000-ish RPM at highway speeds. Going from 3.07 to 4.10 will require new carriers F&R as PP stated.

4.56s are great on the trail. A wheeling buddy went to 4.10s with 33s and he's been quite happy as well - they would make for a better DD.

When I went from 3.07s (I ran them for about a year with 33s) to 4.56s, it felt like I dropped a hemi in there.

Another option is to go with a 8.8 rear axle instead of a D44 (it sounds like you've got a D35). 4.10 8.8s are fairly common, and make for a stronger axle to boot.
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Old December 21st, 2006, 11:16 AM   #11
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Do i just need to get lucky and find a classified/boards type sale for D44 or is there somewhere easier to find one?

Search Parts For Sale here on GL and also post an ad in the Wanted Forum. Be specific in your ad. Do the same on Misfits and other Jeep-related boards that are nearby, like GLJT. Also start cruising eBay.

The 8.8 is an option for you, but the added cost of having to fabricate the bracketry, buy a flange adapter, and possibly buy wheel spacers kind of defeats the purpose and would also not be a very quick solution. If you happened to find one that was already set up for a TJ, then I would consider it.
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