cut upper arms - tutorial

they do this to adjust the angle of the balljoint so it doesn't bind as soon and will allow them to drop a little more then it would otherwise with the balljoint binding

Adjust the ball joint?? Binding? Do you tilt the balljoint up or down? How far is the trk being lowered to get the balljoint to "bind". I think I might have to look into my suspension if binding is an issue...

they tilt the balljoint down. they are doing this to lay frame without getting drop spindles