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Getting my life back!
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in order to keep the lifetime powertrain warranty on my rearend i was thinking about getting a set of 3.92's and running them with my stock 265/70/17's. i was just wondering if anyone out there had that combination and was it a good one? does it have pretty good pep at start up and how good does it tow. any info would be nice. thanks!
 

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Admin - David Mack
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I thought the 08-09 trucks would have an R&P option of 4.10? If you could put the Dodge 4.10 R&P in your truck, you should be able to maintain the Life Time Warranty.

:D
 

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Getting my life back!
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945 Posts
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well unless my service guys are idiots...(which is very possible) they said for the 06-08 axle, 3.92's were the lowest gears offered.
 

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According to ringpinion.com, the 06 uses a 9.25" rear just the 03-05. That rear could go as far as 4.88.

Don't know about the '08 rear diffs. What does it say in your glove box?
 

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Ramistered User
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well unless my service guys are idiots...(which is very possible) they said for the 06-08 axle, 3.92's were the lowest gears offered.
3.92's are the lowest gears that will fit on the 06 - 08's. Starting late 05 the rear-ends are built by American Axle Manufactors NOT Chrysler and are smaller towards the passenger side of the housing which is where the 456's rub because they are a thicker gear.. The gears have to be installed and set, turned by hand to mark the housing then dissasembled and the housing is ground where the marks are for clearance..
 
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