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Discussion Starter · #1 ·
Can anyone tell me the fix for a speedometer that is 10 to 15mph slow. I heard that there are some sort of small gears in the transmission where the speedometer cable goes to??? This is for a 1978 V6. Thanks
 

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the speedo cable goes into the tailshaft on the left side of the trans...the gear is on the end of that..held by a c-clip. those ar interchangeable, that is the driven gear. You may also have to change the drive gear (not always) but for that the tail housing must be removed
 

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Are your tires the proper size? I have 205's on my rear and mine is about 6-8mph slow.
 

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Discussion Starter · #5 ·
I have 195/70R/13 on the car. They are on the original rims so I figured they are the original size??
 
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