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Old 09-16-2013, 09:11 AM   #1
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Help - 33"s on now but should I regear?

All

Thanks in advance for your help. I am a bit confused about what I should do and there seems to be a lot of different opinions on this subject. I have a 2011 JKU Sahara which I put a Teraflex Level kit on and 33" 285/70/17's on. Love the look and the lift. I drive a lot of highway/ interstate miles but occasionally take it mudding/trailing in Central Ill. Since the 33"s which actually measure 32", I have lost a lot of "pep". I have read that 3.73 's come stock. For my usage, what should I regear with? Where should I buy the kit? Wll regearing help with maintaining speed on the highway? Cruise control bouncing gears.
Thanks!
Mojo

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Old 09-16-2013, 09:21 AM   #2
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Start searching local shops. Regearing varies in price depending on the shop...anywhere from 1000-1500. Too low a gear will result in poor dd performance with ur tires, however will be able to run a bigger tire setup. For ur setup, I would look into the 4.56 gearing. A lil shorter than the stock rubis but that's the next available gearing for ur jeep besides the stock 3.21,3.73. I have a similar setup as urs however I have a 2012. I'm still able to use cruise control.

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Old 09-16-2013, 09:23 AM   #3
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The stock gears are 3.21, 3.73 an upgrade. Check your window sticker or build sheet. If you have the max tow package you will have at least 3.73. I have 295/70/17 Nitto Grapplers with 3.73 and a 2.5" lift with no problems.

Those are small 33's so either way you will be fine. re-gearing not needed.
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Old 09-16-2013, 09:28 AM   #4
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Ok, I will check the gearing. I am just not pleased with the performance and loss of RPMs at highway speed. It is really dogging now.
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Old 09-16-2013, 09:44 AM   #5
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What all will I need to purchase for a regearing? How will I know if I indeed have 3.21?
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Old 09-16-2013, 09:44 AM   #6
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Ok, I will check the gearing. I am just not pleased with the performance and loss of RPMs at highway speed. It is really dogging now.
Sorry, I just realized you have a 2011. That engine is a dog to begin with. I had an 2008 with stock tires and 3.73. Had no power.

Yeah, you will probably be better off regearing. or you can trade it in for a 12-14, problem solved....
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Old 09-16-2013, 09:46 AM   #7
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What all will I need to purchase for a regearing? How will I know if I indeed have 3.21?
Call Chrysler, give them the VIN. I believe they can send you the build sheet.
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Old 09-16-2013, 09:56 AM   #8
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I have a 2009 with 3.73 gears and 33" tires. I bought a superchips flash paq and it was like night and day with shift points. Much more tolerable and $300 was cheaper than the $1500+ for regear. It no longer jumps to OD on and off on highway. If you plan to go bigger, you will want the regear. Good luck!
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Old 09-16-2013, 10:14 AM   #9
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How does the Flash Paq work? Hard to install or calibrate? I may try that route
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Old 09-16-2013, 12:57 PM   #10
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How does the Flash Paq work? Hard to install or calibrate? I may try that route
Easy, plug it in, tell it new tire size, let it do its magic. Follow prompts. Like turn Jeep to on then wait then off. Not hard at all.
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Old 09-16-2013, 01:02 PM   #11
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that might be your best option if your not planning to upgrade ur tires or add more weight to your jeep. regearing is pretty expensive but way worth it.
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Old 09-17-2013, 07:25 AM   #12
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that might be your best option if your not planning to upgrade ur tires or add more weight to your jeep. regearing is pretty expensive but way worth it.

I am more inclined to do the regear based on being able to do some moderate off-roading. I am also not pleased with the lack of current performance. I received my build sheet yesterday to see what I have exactly

4spd Auto Tranny
3.73 Ratio
Front Dana 30
Rear Dana 44

What is the best gear ratio for this set up with my 33's? What is the max ratio I can put in these axles?

Thanks,
Mojo
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Old 09-17-2013, 08:14 AM   #13
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Quote:
Originally Posted by MrMojoRising View Post
I am more inclined to do the regear based on being able to do some moderate off-roading. I am also not pleased with the lack of current performance. I received my build sheet yesterday to see what I have exactly

4spd Auto Tranny
3.73 Ratio
Front Dana 30
Rear Dana 44

What is the best gear ratio for this set up with my 33's? What is the max ratio I can put in these axles?

Thanks,
Mojo
I replied to you other thread, so check that out. To answer you question about max ratio I am ALMOST positive you can go to at least 5.38. I know or a FACT that you can go 5.13's with your carriers.

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