[TedRamAirII]

This car had 4 wheel power drums. The guy put disc brakes on the front, didnt change anything else. When I spin the front wheels they drag, I open one of the front bleeders and they spin free. I need to replace the Master cylinder and Prop valve. The master should be easy everyday part if I know which one to get. I know there is a question about rod depth but I dont know what I have until remove the existing master. So does anyone know of a bolt in Master application? The prop valve I can pick up from NPD 5 miles away, if I know which one to get. They dont list parts for the big cars but they do list a 71-73 GTO prop valve ( 2 different ones, dont know what the difference is in the 2) should work?. What is your experience?

[Goatracer1]

The reason the brakes drag is because the drum brake master is holding them on. It has a valve that keeps a small amount of pressure in the system when the pedal is released. You don't have to disconnect the lines to check the master's depth. Just remove the 2 nuts and pull it away from the booster. If the boosters the same just buy a master for a 1969 Bonn. with disc brakes.