So im putting in a new speedo in my 87 fox gt and as long as i got the cluster out i was thinking of switching to a 140mph. my question is do i have to tune to speedo or will the new cluster do it for me ???? and yes this may be a dumb question but i had to ask thxxxxxxxx
you will not need to calibrate it, it is not a digital deal, it is mechanical. i've been running one for years now, its right on the money. the gear in the tranny does the calibration for gear change.