thanks for the help. its a 1.5 ton without power brakes. Its my first chevy, I know the early fords use the same master cylinder from 1-2 ton trucks. I removed the master cylinder and found it is one from a 1/2 ton so rebuilding it is out the question and the only ones I found so far only go up to a 1 ton but I did not check jim carters, thanks for the help
