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Old 01-22-2014, 08:26 PM   #1
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Dana 44 or Dana 30

I have an 09 jku and am moving up to 35s soon. It is my daily driver but only about 10 miles round trip. I drive it alot in the summer to the beach which is about 65 miles one way at 70mph. I have a dana 30 front and dana 44 back. I am running 33 duratracs right now with 3:21 gears and are gonna upgrade the gears as well. I barely go offroading maybe 4 times a month and nothing too serious just a little mudding. Should i get 4:88 or 5:13 with 325/65/18 duratracs? It is an auto tranny btw. Will the 5:13 with the dana 30 front tear up the teeth?

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Old 01-22-2014, 08:31 PM   #2
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I would probably go with a d44. A aftermarket d44 is a lot stronger than a stock d44. As for the gears 5.13s is way overkill, I would stick with 4.88.

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Old 01-22-2014, 08:36 PM   #3
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conventional wisdom says:

3.8 motor + auto tranny + 35's = 5.13's

rpms at about 2400 at 70 mph

I haven't read of very many failures or tooth breakages with the 5.13's in the D30, though that idea does seem to be floating out there.
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Old 01-22-2014, 08:37 PM   #4
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Originally Posted by Antonio_jku View Post
I would probably go with a d44. A aftermarket d44 is a lot stronger than a stock d44. As for the gears 5.13s is way overkill, I would stick with 4.88.
thanks i will move to the dana 44 up front as soon as i get the money i found one for 1400 which is a good deal but the install is gonna cost me
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Old 01-22-2014, 08:46 PM   #5
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If I were you i would just wait it out. Dana 30 will be fine and if it does break, which would be pretty rare for 35's and minor off-roading, then you could get a Dana 44 up front.
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Old 01-22-2014, 08:48 PM   #6
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If I were you i would just wait it out. Dana 30 will be fine and if it does break, which would be pretty rare for 35's and minor off-roading, then you could get a Dana 44 up front.
would you recommend 5:13s or 4:88s?
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Old 01-22-2014, 08:56 PM   #7
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I think 5:13s would be better in the long run. It might be a tiny bit overkill with 35s, but so far i have yet to read about someone with too much gear. On the other hand I've read plenty about people wishing they had got 5:13s instead if 4:88s. But it's your choice get what's best for you. If you plan on going bigger eventually get 5:13s if not 5:13s and 4:88s each have their pros and cons with 35s, Auto, and the 3.8.

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