Regearing an X .. 30 & 44 - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 27 Old 03-09-2009, 04:00 PM Thread Starter
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Regearing an X .. 30 & 44

Exactly what ratios are available? I've been told 4.88 or 5.13 is about it. I would also like to use Ecteds or E lockers.

I'm worried about the 4.88 D30 pinion heating up going down the highway. I had planned on going to 33" tires in conjunction with new gears. Currently running stock 255 75 17" Wrangler GSAs.

The Mopar axles I ordered last Thanksgiving from
4WD.com obviously didnt pan out. (Front never made it).

Are my concerns about the pinion justified?
Are any other ratios for both axles available and from whom?

How bad would 4.88's and 33's wreck my 19MPG average?

Thanks in advance.
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post #2 of 27 Old 03-09-2009, 04:10 PM Thread Starter
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Not arguing with ya, but Northridge and four wheel parts show 4.88's and 5.13's.. who makes the 4.56's you mention?
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post #3 of 27 Old 03-09-2009, 04:11 PM
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Deleted. Old Jeep Dana 30's (tj's and such). I guess i dont know about new dana 30's!

I would think 4.10's are right gearing considering rubis basically come with 33's.


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post #4 of 27 Old 03-09-2009, 04:23 PM Thread Starter
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Yeah, 4.10's is what I was aiming for originally. Dadgummit!!!!

I'm pretty ignorant on the ins and out of what works in what axle, and I don't want to make a mess trying to give it a little more growl. I don't need the super tall gears given my mild driving habits.
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post #5 of 27 Old 03-09-2009, 04:34 PM Thread Starter
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Quadratec shows a 4.56 however. hmm.
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post #6 of 27 Old 03-09-2009, 05:00 PM
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If you want gas milage stay lower. 4.10's are good with 33's. 4.56's will be worse. Then if you want alot more offroad find a rubi t case with the 4:1 ratio.


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post #7 of 27 Old 03-09-2009, 05:38 PM
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Are you running an auto or m/t? 4.56 in an auto with 33's is a waste of your $$$. I went with 5.13's, my mileage went up .5 mpg and I can finally pass people again.

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post #8 of 27 Old 03-09-2009, 05:48 PM
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I have 4:10 in my X and am running 33's on a 2 dr. Works good for me!
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post #9 of 27 Old 03-09-2009, 06:29 PM Thread Starter
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I have the 6 spd manual trans.

Who carries the 4.10 gears for the JK D 30?
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post #10 of 27 Old 03-10-2009, 10:05 AM
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Quote:
Originally Posted by cowboy49 View Post
I have the 6 spd manual trans.

Who carries the 4.10 gears for the JK D 30?
You will have to get some used take out gears, I just sold some 4.10's I pulled out of a stock 30.

Those of you that think you know everything really annoy those of us that do!
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post #11 of 27 Old 03-10-2009, 10:14 AM
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This thread is interesting to me. If I have a manual X without the towing package will I need to re-gear if I want to run 33's?

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post #12 of 27 Old 03-11-2009, 03:52 AM
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No but it sucks to drive. I lived with it for over a year. wore the tires out so went back to streets. If I did it all again I would regear first then put the tires on.

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post #13 of 27 Old 03-11-2009, 05:46 AM
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Stay away from the Ected! I have it in front and rear They slip unlike a Arb locker, they don't disengage right away. I will be replacing my front one next month. Biggest waste of money, I tried to save a little on lockers, they where cheaper than an arb,And there is a reason for that! Just my 2 cents


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post #14 of 27 Old 03-11-2009, 02:16 PM
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also keep in mind that an arb has to be taken out approximately once a year to replace the o ring seal. This will cost you around 200 if you don't do it yourself.
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post #15 of 27 Old 03-11-2009, 02:51 PM Thread Starter
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Was the 4.10 ever offered by Jeep in the JK X ?
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post #16 of 27 Old 03-11-2009, 02:58 PM
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Quote:
Originally Posted by cowboy49 View Post
Was the 4.10 ever offered by Jeep in the JK X ?

Yes, that is what I have.

In 2007 most the X models came with 4.10. you did not have to have any equipment package to get it. You could get them as thier own feature. When I got my jeep the only up grades I wanted was 4.10, Auto and the package that gets you AC.

I think it was starting in 2008 that you had to have certain equipment packages to get the 4.10
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post #17 of 27 Old 03-11-2009, 03:29 PM
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Yeah I have an '08 and had to get a certain package that offered it. Had them throw on the lift and tires to keep the warranty. I did test drive one with 33's without the 4:10 ration and you def can tell a difference.
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post #18 of 27 Old 03-13-2009, 03:17 PM
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Standard 2007 X has 3.21 gears. If it came with the towing package option, it has 4.10 gears.
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post #19 of 27 Old 03-13-2009, 03:46 PM
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2008 models came with 3.73 in the tow package, they dropped the 4.10 option.

Redrockjeepin I have been running ARB lockers for many years, and have built a lot of axles with ARB's for customers, the only time the O-rings seem to tear is when the vehicle is not used and sometimes with the condensation that forms in the axle rust can form and this is when the o-rings fail. The ARBís I am running in my TJ have been fitted for over 5 years now with no problems.

JK X Unlimited 3.5" RE Long Arm Lift, RE Drivelines, Rugged Ridge 17 x 9 Steel Wheels, 35" Mickey MTZ's, Bushwhacker Flares, 4.10 ratio, Rugged Ridge Front & Rear Bumpers.
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post #20 of 27 Old 03-25-2009, 02:45 PM Thread Starter
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Found the Mopar part #'s; 4wheel parts has them now, has the Jeep, should install it all tomorrow / Friday. MAYBE it will all work out!
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post #21 of 27 Old 03-25-2009, 02:48 PM Thread Starter
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Here are the Mopar part numbers for 4.10 gears:

Rear Axle Ring and Pinion (Dana 44) - 68003426AA (7/16" bolts - early '07)
68035581AA (1/2" bolts - late '07)

Front Axle Ring and Pinion (Dana 30) - 68004094AA
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post #22 of 27 Old 03-25-2009, 03:00 PM
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Quote:
Originally Posted by river2c View Post
Standard 2007 X has 3.21 gears. If it came with the towing package option, it has 4.10 gears.
towing package OR automatic came with 4.10.
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post #23 of 27 Old 03-26-2009, 07:10 AM
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You will also need a new front Dana 30 carrier if you are going from 3.21 to 4.10. The rear will work and no change is needed.
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post #24 of 27 Old 03-26-2009, 04:33 PM Thread Starter
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I got those part #'s PM'd from you on JKBoard, huh?
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post #25 of 27 Old 03-26-2009, 05:32 PM
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Quote:
Originally Posted by cowboy49 View Post
Quadratec shows a 4.56 however. hmm.

5:38's are available now
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