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Forum: Pontiac - Street 10-26-2020, 05:50 AM
Replies: 141
Views: 18,644
Posted By Cliff R
RPM equals Gear Ratio x MPH x 336 divided by Tire...

RPM equals Gear Ratio x MPH x 336 divided by Tire Diameter.

If you have a good converter you'll barely see any increase in RPM at 70 MPH. I have 26" tall tires, 3.42 gears and a 10" Continental...
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