High Altitude Camshaft Selection

They have one weakness; if you try to back up with the unit engaged, it will take less than 2 feet to turn it into junk, and the rebuild costs half of the current retail price.
They come to you with a little computer, and a farm-truck splitter switch. When you install the GV with these parts as directed,there will be no chance of damaging the unit..................
And you are right,it will break the tires loose at 80mph under full throttle with 275s, as you are racing towards the traps. The shifts are instant, behind a 4spd.