The original brake pedal arm does not hit the toe board. It is held at a specified distance from the toe board by turning the threaded clevis thus adjusting the length of the pushrod.
The problem the OP is having is that, unlike the original master cylinder, his Corvette master cylinder does not have a captivated pushrod. There is nothing to prevent the brake lever return spring from pulling the Corvette pushrod out of the master cylinder.
So if I understand right, the AD trucks have a washer/clip on the rod inside the nose of the MC to keep the rod from pulling out...that's the stop? If that's right then he will have to fab up a bump stop on the toe board.
Thanks Carl!
Mike B
