I cant help but notice all of the ford vans that people have converted to 4x4. A common issue seems to be the need for swapping the outputshaft in the transmission and installing the appropriate tailhousing to mate with the transfercase. Then of course comes the issue of the VSS sensor not working because the trigger wheel is different on the F series 4x4. It seems the solution everyone uses is to buy an electronic gizmo that corrects the signal. My question is, why cant you simply press the trigger wheel off of the 2wd output shaft and press it onto the 4x4 output shaft before installing?
Am i missing something here? Some people have stated they used a 1356 tranfercase instead of the NV271 so as to avoid messing with it. Im confused i guess, i though the 1356 used a mechanical speedometer and i know the ECU wants to see that signal from the VSS. Also what happens when the transfercase is shifted into low? Does it confuse the ECU?
Am i missing something here? Some people have stated they used a 1356 tranfercase instead of the NV271 so as to avoid messing with it. Im confused i guess, i though the 1356 used a mechanical speedometer and i know the ECU wants to see that signal from the VSS. Also what happens when the transfercase is shifted into low? Does it confuse the ECU?