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1986 Speedo Sensor Automatic

ferricsteed

New member
Joined
Feb 1, 2019
Messages
3
Location
Louisiana
I swapped my 2.59 pumpkin for a 3.07 pumpkin. Chart shows I have 17 tooth with 35 tooth driven gear. The new ratio indicates I need a 41 tooth driven gear, however: when I removed speedo sensor, I don't see a gear. It looks like a little motor. How would I go about making sure the speedo will read correctly? Gotta love all digital dash! I am hoping it is an electronic self calibrating answer.
 

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