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  #1  
Old 01-07-2011, 09:48 AM
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Default 3.55 to 3.92

I recently bought a 2011 Ram 4x4 w/ 3.55 rear end . I installed 33" tires and will be towing my bass boat. I am not happy with 3.55 gears and looking to change to 3.92s. It is a lot cheaper to have 4 Wheel Parts or a private mechanic here in Indianapolis install the 3.92s compared to my dealer. However, I'm worried about warranty issues. Is it a bad idea not to use a dealership?
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Old 01-07-2011, 10:04 AM
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Yes, it would probably be less costly to have a private mechanic install the 3.92 gears, but it would not be a bad idea to have the dealership install them for warranty reasons. Your fuel consumption will go do with the 3.92 gearing.
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Old 01-07-2011, 11:52 AM
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i know i have an older model truck but my truck came with 3.92s and in town i only get about 12 mpg but i really like them
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Old 01-07-2011, 02:12 PM
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Where can someone get a good deal on the 3:92 gears?

Do you have to get a whole new rear assembly, or can you just swap out gears??

-sorry for my ignorance!
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Old 01-07-2011, 03:41 PM
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The mpg change from 3.55 to 3.92 won't be huge but there will be some. Remember both front and rears have to be done. As for the warranty issue, I really can't say if having the 4x4 shop do it will be a problem but it does leave a window open for Dodge to deny a claim if something were to happen.

Before you change the gears I suggest you use the Body Builder's guide to make sure you are setting your Ram up for what you need. Go to http://www.dodge.com click on "owners" then "body builder's guide".
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Old 01-07-2011, 03:42 PM
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Originally Posted by BRYFRY View Post
Where can someone get a good deal on the 3:92 gears?

Do you have to get a whole new rear assembly, or can you just swap out gears??

-sorry for my ignorance!
No reason to be sorry. It is just the gears. As the original post said the local 4x4 shop will likely be cheaper than the dealer.
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Old 01-09-2011, 11:17 PM
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You should go with some 4.10 gears if your going to spend the money. You wont notice that much of a difference going up to the 3.92s, but with the 4.10s you should.
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Old 01-09-2011, 11:23 PM
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I agree with Scat . Theres not enough difference there for me to worry about going to 3.92 . I have 4.10's in my truck from the factory with 33" tall tires .
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Old 01-10-2011, 11:10 PM
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Quote:
Originally Posted by ScatPak07 View Post
You should go with some 4.10 gears if your going to spend the money. You wont notice that much of a difference going up to the 3.92s, but with the 4.10s you should.
+1....Going to 4.10 when i do 35s.
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Old 01-10-2011, 11:22 PM
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definitly go to 4.10's if you keep the truck for a while you may want bigger tires and you only want to change gears once. as far as warranty, it's only the bearings and gears in the rear end you'll be losing warranty on that's no big deal.
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