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14th Annual SoCal Vintage BMW Meet 2021! “All couped up”

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Speedo gear drive for 5 speed swap


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If you didn't change the final drive ratio, you do nothing. If you changed the final drive ratio, you change your speedometer, not the speedo drive gear. They are all 2.5:1 recuction, 4 or 5 or od trans. You calculate the driveshaft turns per mile, divide by 2.5 and that is the number stamped on the back of the speedo.

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