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The suspension changer
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Depends on what size rim/tire combo. Prob a 4.10 though If I had to guess.
 

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i might even go a little lower to 4.56s as most people run a ~35-36" tire with that kind of lift.

im putting 36s on mine, and am torn between 4.56s and 4.88s.
 

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The suspension changer
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my fault man, I thought you were lowering it.lol I would deff suggest a 4.56 gear but a 4.88 is even better. I have 4.56s and 38s but it could ude more gear.
 

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The suspension changer
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4.56 for kinda stock power but I would go 4.88 because I do less interstate driving and it will give you more power down low.
 

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well its a 5.3 on 315/75R16's with the 7" drop lift.
you might want to edit your first post. No body calls a lift....a 7" drop lift, even though it may drop the front differential 6"

Oh and go with 4.56's
 

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Keepin' it real...
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Appropriate gearing depends totally on tire size. The amount of lift makes no difference.

For 315/75-16's, 4.56 will put you pretty close to what 265/75-16's and 3.73's feel like.
 

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GMFS Enforcer
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Bayou Surface Drive, LLC
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Installing gears is mostly trial and error setting the backlash and pinion backspacing isn't it?
 

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sort of, but not really...
 

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My bro and i just did my 5.38's with some help from a friend who owns a 4x4 shop and it wasnt that bad. Hardest part was settting up the backlash and getting the proper tooth contact which was as somebody already stated, a lot of trial and error
 
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