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jimfulco · 01-13-2006, 04:35 AM

Did your old one read right? If it did, the new one should read the same, unless you changed something else (transmissions, speedo gears, or rear end gears).

Maybe it's related to the one in my '79. At a steady 75mph on cruise, I've seen it read anywhere between 60 and 95mph, and holding steady at those speeds, at least for a few minutes. Sometimes if you hit a bump just right it will jump to some other speed for a while. I thought about buying a used one, but I figured I already had a used one.

01-13-2006, 04:35 AM	#5
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Re: Speedometer calibration/adjustment... Did your old one read right? If it did, the new one should read the same, unless you changed something else (transmissions, speedo gears, or rear end gears). Maybe it's related to the one in my '79. At a steady 75mph on cruise, I've seen it read anywhere between 60 and 95mph, and holding steady at those speeds, at least for a few minutes. Sometimes if you hit a bump just right it will jump to some other speed for a while. I thought about buying a used one, but I figured I already had a used one.