Quote:
Originally Posted by timpryor
not a v6, but you can also buy a speedo gear to fix it its less money BUT it won't fix other stuff like tire stuff like the speedcal will.
my gas milage went up with 4.10's by like 1 mpg
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Prior to 1996, Ford Mustang speedometers could be recalibrated by switching a small plastic gear inside the transmission. In 1996, Ford switched to electronic speedometers with no adjustability.