I don't know if this will happen to you but it did happen to me. Other stovebolters might jump in and tell you everything is OK as they use the same setup. Hope so! I put a 'vette master cylinder with power booster on my ride. I couldn't stop it in the old country mile. Darn near hit a car going into a show. Problem was the 'vette master cylinder is made for disc brakes and uses I believe a 1-1/8" piston. This is due to the difference between the way disc and drum brakes work. I checked the pressure at the drums and could get only around 900 to 1000 psi. Tried everything, new shoes, drums turned and such. Then I researched it as no one seemed to know what to do. Found that a 7/8" piston master cylinder that was made for drum brakes AND a booster worked. Just a few years were made like this, the way the booster socket for rod fits up. Get 1200+ psi now and I don't sweat stopping.
