1975 Corvette Brake Problem
Recently purchased a 1975 Corvette and I am having some issues with the brakes. I was driving the car and the brakes pretty much stopped working and a brake warning light came on. There does not seem to be any leaks and the brake fluid level was unaffected. I thought it was most likely the master cylinder so I changed it. I bench bled the new MC and the brakes after install but still have no pedal.
When the engine is not running, the pedal is firm but once the car is started there is nothing there-the pedal just drops to the floor. I have done much reading but I am not sure where to go next. Any advice would be appreciated.