Still having a brake issue. The brakes are basically completely locked up, even after I've turned the adjusting screw all the way in toward the fire wall. It could be that the master cylinder stroke length is not really compatible, or my booster is bad.
I've temporarily solved this by disconnecting the vacuum hose from the booster, so that now I basically have no powered brakes, but at least I can move it around.
I'm contemplating swapping out the booster for a Super Duty hydro boost setup, since my power steering reservoir has an extra port. Still researching what all I need to do for that.
In the meantime, I may also pick up a 1995 Ford Explorer master cylinder, A1 Cardone part number 13-2695, since the 1995 was already proportioned for front and rear discs.
I've swapped out the front discs for 1-ton F-350 discs. I'm running a dual piston caliper common to the 78-79 model year trucks. In the rear, 1/2 ton Chevy disc brakes replace my old drum brakes.
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