4.56s or 4.88s

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Aug 10, 2010 | 05:56 PM
  #1  
Hey guys Im lokkin for find out if anyone is runnin either of those gears with 33s??? If so how is it down the highway or whats my best option?
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Aug 10, 2010 | 06:30 PM
  #2  
May not be of much help, but with 4.88's I'm running 2700-2900 RPMS at 75mph with 35's.
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Aug 10, 2010 | 06:43 PM
  #3  
Quote: May not be of much help, but with 4.88's I'm running 2700-2900 RPMS at 75mph with 35's.
See 35s are in my far future but if im gonna drop a grand on rebuilding my axles i might as well gear for 35s now ya know? Thanks for the help! What you RPMs you got at 65?
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Aug 10, 2010 | 07:32 PM
  #4  
I dunno...low 2000's? I normally drive around 75mph.

It's kinda odd. I had stock gears with 32's and got like 13mpg. I put the 35's with 4.88s on and i'm getting a good 15-17mpg now. That, and not NEEDING to go into 4LO is pretty nice when off road.
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Aug 10, 2010 | 07:55 PM
  #5  
AHA! I new 32's on 3.55 was worse on fuel than 4.10s! Sorry to throw that in there but i knew something was funny with my mpg.
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Aug 10, 2010 | 08:00 PM
  #6  
Quote: AHA! I new 32's on 3.55 was worse on fuel than 4.10s! Sorry to throw that in there but i knew something was funny with my mpg.
Yeah right now Im 31s and 3.55 not cool haha I search in and out of OD all the time!!!
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Aug 10, 2010 | 11:23 PM
  #7  
what rear axle do you have? 29 spline 8.25, d44, ford 8.8?

i wouldnt regear if you have a d35
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Aug 10, 2010 | 11:34 PM
  #8  
go with 4.56's, I just re geared mine with only 31's nowing that I am getting 33's in a couple days and the new ratios are a night and day difference. A little high in the rpm range right now because I only have 31's but when I get the 33's they will be spot on im sure.
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