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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 4x4k20, Aug 26, 2001.
anyone running different ratios in there 4x4s if so what the closest you can run
Do you mean a different ratio in the front and back? As far as I know, you can't........
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I belive you can only go 10 percent on the differnet ratios. Like 4.10 and 4.09, or 3.40 and 3.42, or 3.70 and 3.73. Hope that helps. You could get away with more if you only used 4 wheel drive in heavy mud where there is no traction. If you used say 4.10 in the rear and 3.73 up front and used it on hard packed dirt you will destroy the transfer case very quickly.
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yes' i here that some people do like run 410 rear with 373 front just wondering if anybody here runs different ratios like this with any problems
Not recommended unless you like very deep mud.
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Yup 10% is the is the biggest axel ratio difference you can go without causing damage to most transfer cases.
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That advice also assumes that you are running the same size tire on both the front and rear of the vehicle. I think there was some kind of pink-colored hybrid truck in one of the magazines (possibly a TTC applicant?) that ran different gear ratios front and rear, but also had substantially smaller tires up front.....that's how he was able to get away with it.
10 percent ????!!!!!!
Do you realize that would be like running 4.10's on one end and 3.73's at the other!!! I don't think that would be recommended.
Maybe you are thinking of 1%, which would be more like the difference between 4.09 and 4.11 gears.
10%?!? You guys gotta be kidding me! According to most sources, 1-2% variance is about all you can do safely. For example, 4.09 front and 4.11 rear. That is [((4.11/4.09)-1)*100] 1/2% difference. 4.10 in one axle and 3.73 in another is [((4.10/3.73)-1)*100] 9.92% variance.
According to www.ring-pinion.com, 1-2% is the most difference you can safely run.
As far as the 1-2% variance or the difference in gears brekaing the tcase, you guys need to check out this article >> <a target="_blank" href=http://www.ring-pinion.com/t-myths.html>Myths about Diffs</a>. It will make many things a little clearer.
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I run a 4.09 front with either a 4.10 or 4.11 rear.(cant rememebr it has been a while) I have no problems, but that is pretty close and how mot come from the factory.
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