speedo gear help

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May 13, 2010 | 07:28 AM

markbitters

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Joined: Dec 2009

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From: northern wi

speedo gear help

i have a 91 with 3.55 gears and an auto and wondering if anyone knows what speedometer gear i would need for my 31 inch tires

May 13, 2010 | 07:31 AM

sixx23

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From: Peoria, Arizona

Not quite sure.
Im running 31 x 10.5 on my '89 F150, with stock gears, and I'm only about 3 MPH off, and didn't have any noticeable performance issues with those tires.

May 13, 2010 | 07:48 AM

markbitters

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From: northern wi

ya i cant tell the difference either and its still got plenty of power, im more or less just curious about my mph

May 13, 2010 | 08:34 AM

chelios

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From: San Antonio, TX

31's aren't a drastic change over stock, so I wouldn't worry about getting a new gear.

May 13, 2010 | 02:17 PM

ymeski56

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From: Long Beach Calimexifornia

Quote:

Originally Posted by markbitters

i have a 91 with 3.55 gears and an auto and wondering if anyone knows what speedometer gear i would need for my 31 inch tires

http://bronco.zenseeker.net/Speedo.htm

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