No-good, bad and ugly !! That's the results of changing out the bakes system to to the Ford Explorer disc brakes.

No difference in the way the brakes act. Only stops the rotors from spinning ( barely) when I hit 900 + psi and that's lots of pressure on the pedal. I even went and by-passed all the valves etc.
Jacked the front up and just a light touch of the brakes and they lock up hard ( can't turn by hand ) with under 100 psi showing. The Explorer calipers have a smaller piston than the GM calipers I thought that would make a difference but no.
2 sets same results means its got to be ?
Master cyl. 2 new ones ( disc/ disc ) have been tried 1 " and a 1.125" bore not much difference
Power booster works as tested and with out vacuum connected its very hard to hit 500 psi.
No air in system bled the system twice no air bubbles using power bleeder lots of fluid flow.
Changed the ratio on the pedal still no go.
Slight toe pressure on my 2500 dodge brakes begins to slow it down and that weights 7000 lbs. and this
won't even stop just the spinning rotors.
An the winner is ? I don't know but my ears are open.