area51...I too used the underfloor set up but I did not put a proportioning valve and I do not have disc brakes....however, on my 52 there was one line, 1/4" if I remember right, that crossed over to the chassis rail and then it was all 3/16.
...don't know if this applies to your situation or not but just food for thought.


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile