I have a 68 tbird no engine or transmission the brake pedal only moves about an inch. I was wondering why

if the pedal moves and stops solid after an inch and the brakes arent being activated, it's probably the master.unplug the vacumn to the brake booster, be sure to include the valve and hit the pedal. no change, probably the master.

If there is no engine or trans I'm thinking the car has been sitting idle for some time. In that case the brake rotors and calipers are probably rusty and everything is locked up from sitting causing the brake pedal not to move past the point of the master cylinder compressing the brake fluid. Once you get the engine back in and running and everything hooked up, moving the car and pumping the brake pedal at the same time will probably free everything up. Look at your front rotors. If they look rusty, then that's probably your problem. Normally if the master cylinder is bad you would have just the opposite as in a soft pedal not a hard one. Good Luck, Kenny/MrBlueOval