This is from my 74 which was all drum but I converted it to all disc. I believe this is a distribution block only with no proportioning valve. I've been doing alot of work and research lately here on brakes and upgrades and I got curious about what I had. This would explain why my rears were locking up when I went out testing. I know I need to get an adjustable proportioning valve and I'm going to put in a line lock while I have it apart. Am I correct, is this a distribution block only? Also, what MC should I use with discs all the way around?
Somebody on here mentioned they had a Versailles all disc master to try on their all disc conversion. In my opinion you need a 4 wheel disc master for the pressures to be correct. I just did the front disc conv. on mine and needed the disc.drum master or the front brakes dragged. I am considering the rear disc conv. The problem I see with the Versailles master is that it was a power brake unit wasnt it? No good for my manual disc system.
http://www.hotrodheaven.com/tech/brakes/brakes3.htm http://www.thebrakeman.com/valvetechi https://www.fordmuscle.com/forums/all-ford-techboard/422214-4-wheel-disk-master-cylinders.html Some info I googled. The last link mentions using a Corvette manual 4 disc master.
its not as simple as just useing a 4 wheel disk master cylinder. its really dependent on sizeing the pistons in the master to the piston sizes in the calipers. more detailed info is avaiable here http://www.wilwood.com/Centers/Information/pages/faqs_6.asp