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speedometer calibration


dale

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8 hours ago, dale said:

Well for any do it yourselfer old Plymouth rodders….Took the Plymouth out this morning and going thru the speed alert  in town the speedometer was right on at 30 mph... 7 tooth red drive gear and a yellow 24 tooth driven gear......350 chevy antomatic with a 3.71 rearend and 670-15 coker narrow radial tires. 

 

I'd be interested to see how you did in a clocked off mile-around here those speed alert things always seem to read 3-5MPH off of my daily drivers.

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I go thru this one almost every day with my town and country or Tahoe and they both read right on at 30 mph...  Close enough for government work ...

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