Master Cylinder: Wagner #F66857
Same unit by other manufacturers: Raybestos #36246, A1 Cardone #A-1-10-1331.
At fire wall: bolts right on, no modifications necessary, use stock brake pedal and push rod.
Outlets are threaded for 1/2-20 and 9/16-18.
Steel nuts for 1/4" brake line are Edelmann #121045 and Edelmann #121049. You will need a double flare tool to make up 1/4" brake lines for them. In the front brake circuit don't terminate 3/16" line at the master cylinder, the brass flair cone is too big. Use 1/4" line and convert to 3/16" line down at the tee fitting you'll need to install down at the frame where the two front lines are near each other.
The primary circuit is the rear brake circuit.
The secondary circuit, nearest
firewall, is the front brake circuit. A proportioning valve isn't necessary.
You have several options from here, but you MUST split the lines between front and rear.
I replaced all the lines with 1/4", removed the hydraulic brake switch and installed a mechanical switch at the brake pedal (JB welded a limit switch on the steering column directly between it and the brake pedal, a standard cylinder type brake switch can be installed on the existing braket). The wiring from the old switch will reach these locations. The tee located at the left front wheel flex hose connection will need to be
changed to one with 1/4" connections.
If you choose to keep the 3/16" brake lines and the hydraulic brake switch: Put the brake switch in the rear brake circuit. Put plugs in the two outlets that went to the front
circuit.
CAUTION: If you can't position the hydraulic switch in a manner that will not trap air in the plugged section or the switch section, don't use it.
If you want to use DOT 5 brake fluid, be sure to get a new brake switch to avoid the possibility of melting the seals.
If you want to use DOT 5 brake fluid, be sure to get new flex hoses, 2 on front, one at rear axle.
Wheel cylinder rebuild kit is Wagner #F3609, this kit has upgraded boots, seals and springs - others mfgs do not. Get new bleeder screws Wagner #F11579, these have BIG wrench flats and stick out farther so you can reach them. Wheel cylinder pistons are not available, if you need some, you'll need to buy some other 1-1/16" diameter wheel cylinder. Try Wagner #F35472, F41718 or F73614; they're expensive, but you'll get steel or stainless steel pistons out of them.