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Forum: Pontiac - Street 10-25-2020, 02:12 PM
Replies: 141
Views: 18,647
Posted By getmygoat
A rule of thumb is you turn your gear ratio at 75...

A rule of thumb is you turn your gear ratio at 75 mph. e.g. 355's will be 3550 RPM at 75 mph. Note that tire size won't show up on the speedometer unless the owner has specifically changed the...
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