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Speedometer/Odometer error 120-130

posted by  fredvolvo67 on  Sun Apr 29 09:13 CST 2018
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last visit: Fri Oct 24 12:33 CST 2014
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I know that this subject has probably been covered numerous times, but I'm still puzzled.

I have a '67 122S 4dr. with 4.10 rear end ratio, running on 195/65R15 tires and have installed an M41 OD trans out of a '67 123GT. I had the blue gear p/n380168 in the trans, but speedo read about 20mph fast and the odo was off a good 10%. I have now installed a 19 tooth gear p/n380305 hoping that it would correct things, but to no avail.
The speedometer is still reads fast, but only by about 7MPH, but the odometer reads short by 14%, (for every 10miles traveled the odometer only records 8.5miles ). Is there and easy way to correct things so that the speedometer and odometer are more accurate ? Thks






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New Speedometer/Odometer error [120-130]
posted by  fredvolvo67  on Sun Apr 29 09:13 CST 2018 >


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