Why does Chevrolet tip the master cylinder up when using a booster?
GM uses two (2) holes on the pedal to control the pedal ratio. The lower hole is used for power booster and lowers the pedal ratio. In order to properly align the booster rod, GM uses an angle bracket on the booster so that it will point to the lower hole. Failure to keep this alignment will result in booster damage. The Ford engineers did it right by using two different pedals.