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Another gearing question

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Old 04-21-2012, 10:27 PM
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Default Another gearing question

Is anybody running 315x70x17 or even a 35 of some type with 4.88 or 5.13 gears on a petrol auto, and what is you RPM at 70 mph.
I know there is a graph which will tell me this , but I want to know (before I buy gears) is what the actual RPMs are at 70mph.
Old 04-22-2012, 06:44 AM
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I run 5:13 with 315/70/17 on my jeep and at 70 mph I get around 6500 rpm. Hope this helps you
Old 04-22-2012, 07:48 AM
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Originally Posted by mt shawn 37
I run 5:13 with 315/70/17 on my jeep and at 70 mph I get around 6500 rpm. Hope this helps you
Your running at 6500? I hope you meant 2500 or 3500
Old 04-22-2012, 08:31 AM
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Yes I meant 2500rpm
Old 04-22-2012, 03:47 PM
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Thanks fellas thats what I was hoping for, I just want to see what somebody with 4.88s is running at before I make my decision.
Old 04-22-2012, 03:52 PM
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Running 315/70R17's with 4:88's, at 70mph it's about 2800 rpm. 2007 with manual trans.
Old 04-22-2012, 03:54 PM
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This is gettinig good is there anybody with an auto with 315x70x17s and 4.88s, and keithsfd7 what is your milage with the 4.88s at 2800 rpm.

Last edited by yeahright; 04-22-2012 at 03:57 PM.



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