I am sure this subject has been beat to death but here we go. I have a 53 chevy belair with 4 wheel discs and a underfloor power master cylinder kit. It has a fatman front suspension from a mustang 2, and wilwood discs out back. When I took it out for a test drive it has a hard pedal but does not stop very well. It has a 1 1/8 inch piston in the dual master cylinder and I took it apart, it seems ok but could use rebuilding from setting up. It does have the 2 lb check valves on both sides and a wilwood adjustable proportioning valve for the back. I wonder if it has the correct master cylinder for this setup. I looked for numbers on it but it appears to be a cheap chinese pos.
This car has been in 4 different shops over the years and I finally gave up and I am finishing it myself. I would appreciate any help.