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Old February 12th, 2011, 08:45 PM   #1
Trendsetter
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Default Correcting Speedo on 91 f-350

Ok so I bit the bullet and bought a 91 350 diesel, felt like while driving down the road the speed was off, got out the GPS and confirmed I am reading 10 mph over what I am actually doing. is this a simple gear to swap out like in jeeps? if so anyone got a link to which gear I need with tire size? if not what's it gonna take to make this thing read correct?
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Old April 1st, 2011, 08:35 PM   #2
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Maybe this will help.

http://www.therangerstation.com/tech...peedogear.html

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Old April 1st, 2011, 08:39 PM   #3
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Quote:
Originally Posted by velcro7279 View Post
This is all you need to do since yours is a cable driven speedo. I have a couple gears that may be the right tooth count for you. You will need to pull the speedo cable from the transmission or tcase(4x4) and count the teeth on the gear then go here: http://www.tciauto.com/Products/Tech...eedo_gears.asp to figure out what you need then just change to the right gear.
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