Question- Will 4.11's be safe with 4.10's? - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 12-14-2007
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Question- Will 4.11's be safe with 4.10's?

Just at the title says, will I be safe running 4.11's in the rear and keep the 4.10's in the front? Just bought a set of Yukon's and didn't see until after the fact that they're 4.11's.
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Old 12-14-2007
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yea your clear, i read that as long as they're within .01 or something.. i belive from randys ring and pinion.

im gonna have to run 5.14s in the 9" and 5.13s in the D44 i think
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Old 12-14-2007
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I would say HELL NO.
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Old 12-14-2007
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Quote:
Originally Posted by HarryTasker
I would say HELL NO.
I would say hell yes.....remember that international i had.....4.88 and 4.89.

You might have the occasional "reverse and unbind a lil".....but i only had to do that with a chevy w/ 3.73s front and 4.11 rear.....little bit of bindage.
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Old 12-14-2007
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Considering the fact that 4WD shouldn't be engaged on hard surfaces anyway, the small amount of difference won't be noticed by you or the drivetrain.
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Old 12-14-2007
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For years, Ford specs have called out 3.54 and 3.55 on the same truck. Same for 4.09 and 4.10 and other combinations. You're OK with such a small delta when driving in low traction situations. 1/4 of 1% has got to be less than tire-to-tire variability and it's way less than the front/rear difference in driveshaft RPM while turning left or right.
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