Our 4L80E two wheel drive speedometer conversion keeps your VSS fully functional and ads a cable drive to your tail housing. You send us your tail housing and we modify and send it back with a speedometer gears matched to your axle ratio and tire size.
There are two styles of output shafts on the 4L80E. One is a full spline and we supply a gear adapter you install on the shaft. The second one is a o-ring style shaft and we supply a gear you install directly onto the shaft. With this style you must use a non vented drive shaft yoke.