For anyone requiring speedometers to work for different rear end ratios, you can send the speedo to a shop and have them simply recalibrate it after swapping to your new diff. All you need is a gps and speedo readings at 30 and 60 mph and they can work their magic. Forget about ratio adapter boxes. Cost is the same and no wiring needed (cheaper to recalibrate actually, but not by much).
|