brake problem

[brown1931]

I have a 1931 ford 5 window coupe with a 350 sb chev motor and 350 turbo trans it has a corvair front end with drum brakes and a 9 inch ford rear end with drum brakes my problem is brakes keep tightening up front and back my master is a single bottle with a booster on firewall I have a vacuum control valve on intake. brake lines run directly to front and back brakes can someone help me in this field thanks james the brakes r holding pressure at the drums if i open bleeder valves then they retract at the top and they r good for another 200 kms

[Dick Chambers]

I had the same problem on my 33 Ford 3w coupe. I replaced the vacuum booster twice and still had the problem. These were low cost boosters from a popular hot rod supply house. I then bought an expensive double diaphragm booster and have not any more problem. Lesson learned----Do not go cheap on brakes.