Bleedin my power breaks

[Sniper X]

How do you guys specifically, in a rundown, bleed the brakes on the 70s trucks with power front disc brakes? I tried for two hours on Saturday and the thing stops better than it did, which isn't saying much, but it still is a crappy pedal as in not firm at all. Goes almost all the way to the floor before it almost locks up! I know I did something wrong.

can someone who does this well walk me thru it please? I am putting on new calipers and pads and rotors tonight, and adjusting the rears...

thanks!