Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Rear end gear ratio change = spedo. cable gear change. help? turbo 350
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Old 07-18-2007, 08:40 AM
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If you can't find an off-the-shelf replacement gear that will do the trick, go down to your local speedometer/gauge shop (most medium sized towns have one), and have them install a calibration gear box. It is a small custom precision ratio gear reducer that goes in-line with your speedo cable and can be geared for perfect calibration. As a bonus they will supply you with a laminated speedo calibration certification card to show to your friendly Highway Patrol officer when the need arises. I haven't done it in many years but should still be less than $100?
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