The Ford Barn

old31 · 07-31-2016, 03:02 PM

So, would I need to change the driven gear from 19 teeth to 18 to be closer in the readings.

My speedometer reads 40 MPH but the GPS reads 45 MPH

VFRhugh · 07-31-2016, 03:22 PM

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See #5 http://www.fordbarn.com/forum/showthread.php?t=199558
I did take the back cover off my speedometer to adjust the compensation widget. Mine was off about the same as yours.
Good luck��

07-31-2016, 03:02 PM	#1
old31 Senior Member Join Date: Jan 2016 Posts: 2,103	speedometer driven gear change So, would I need to change the driven gear from 19 teeth to 18 to be closer in the readings. My speedometer reads 40 MPH but the GPS reads 45 MPH Last edited by old31; 08-01-2016 at 07:54 AM.