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webfoot · 11-03-2011, 09:24 PM

The speedo gear in the transfer case will have to be changed out. Not sure of a source though. If it is too far off you will also need to get a different drive gear. There are 2 parts; drive gear on the output shaft and the driven gear which is where the cable attaches to.

11-03-2011, 09:24 PM	#2
webfoot Registered User Join Date: Nov 2007 Location: Hermiston, OR Posts: 947	Re: How do you correct the speedometer for larger tires? The speedo gear in the transfer case will have to be changed out. Not sure of a source though. If it is too far off you will also need to get a different drive gear. There are 2 parts; drive gear on the output shaft and the driven gear which is where the cable attaches to. __________________ *Running in place gets you nowhere fast.* -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC.