I have a 1957 Chevy Bel Air 4 door post sedan. I installed the Eckler's disk brake conversion kit. I put in an 8" booster, new MC, proportioning valve with it. The pad fits very, very tight on the rotor. I made sure the caliper pistons were retracted all the way when I installed them. I could just get them on. After installing them the wheel turns with a lot of effort. If you drive it, for the first 1/2 mile you're okay until they heat up and drag.

One side got hotter than the other so I replaced the caliper on that side with an aftermarket 1971 Chevelle V8 disk unit. Was identical to the Eckler's. Fit the same right out of the box. I even played with the torque on the wheel bearing. Must be the rotors? Anybody have this problem?

Thanks!