Thread: Rpm question
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Old 11-11-2019, 10:44 AM   #3
Sheepdip
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Re: Rpm question

This might help you figure a real close to what you got for rear gears.
Have you verified the tach for accuracy with a digital timing light? You can determine if the speedo is correct/close also with this chart. With +/- involved Special K is pretty close. Your tire OD should be 28.7" in a perfect world so bump it to 29 on the chart

https://auto.howstuffworks.com/auto-...size-chart.htm
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