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Thread: Speedo Q
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Old 05-08-2008, 08:24 PM
jimfulco jimfulco is offline
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http://novaresource.org/speedo.htm has a formula that uses tire diameter & rear end gear ratio, and a chart of speedo gear combinations.

http://tciauto.com/Products/TechInfo/speedo_gears.asp has a tire diameter calculator.
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