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Old 10-03-2009, 06:41 AM   #4
mikey531
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Join Date: Jul 2009
Location: Exeter, NH
Posts: 795
Re: my speedometer is off what to do?

My speedometer is off too so I used my TomTom GPS to find out the speed I was really going. It shows mine being off about 10 MPH with a turbo 350 and 4.10 gears. The speedometer in my 2000 GMC is off a couple miles per hour too. I am going to use this chart when I get the ambition to change mine.

http://novaresource.org/speedo.htm

Last edited by mikey531; 10-03-2009 at 06:46 AM.
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