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#1 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
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i put 35's on my truck how do i get the mphs to be correct...its about 5 or so mphs off now...how do i fix this? 84 k10 4x4
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#2 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
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Re: mph question???
does anyone know????
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#3 |
Account Suspended
Join Date: Dec 2008
Location: indisclosed
Posts: 1,515
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Re: mph question???
If you'll give me a minute, i have i link to an exasperating, exhaustive, drawn out drama of my own concerning this very dilema that i went thru-----i usually make things more difficult than nessesary for some reason.
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#4 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: mph question???
It's a simple matter of changing the driven gear that is inside the tailshaft of the transfercase. It is the square hole that drives the speedometer cable.
You will see a small bolt and forked clamp that hold in a circular "plug". When you remove the clamp the entire "plug" will pull out. The gear is on the end of it. Simply pull it off and take it to the dealer. They are color coded to display the tooth count. It helps to know where you are starting from, to determine which one you need. Cheap easy fix, unless you are waaay off, which you shouldn't be at this point.
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#5 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
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Re: mph question???
hey thanks guys
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#6 |
Registered User
Join Date: Jan 2010
Location: Loveland, CO
Posts: 1,921
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Re: mph question???
Don't mean to steal this thread, but i will soon be putting 35" tires on my truck, and have been doing some research on the speedo gear thing, and my t-case has a ratio adapter on the speedo gear right now. Does this ratio adapter need to be replaced with a different one or should i ditch the adapter all together and just replace the driven gear on the t-case?
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Zach 1970 Chevrolet Custom Camper K20 1971 GMC Super K2500, 12V/NV4500 swap in progress 1971 Chevrolet Custom C10 1972 Chevrolet Custom Deluxe C20, 5.3/4L60E 1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi 2004 GMC Sierra 2500HD, LB7/Allison, CCSB 2005 GMC Sierra 1500, 5.3/4L60E, CCSB |
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