Brake problems need advice

[brocks 97]

I am having some brake problems from my brakes after full rebuild of everything on my 97 ecsb suspension and Brakes with a 2/4 drop. I am now having very soft mushy petal from my brakes. I purchased
Cardone select calipers,
new ac Delco master cylinder
ac Delco, wheel cylinders,
new drums back
, new centric drilled and slotted rotors
with Wagner ceramic pads front
Wagner ceramic shoes
Russell ss brake lines
Napa dot 4 fluid
235/60/18 front
285/50/20 rear

Have manually bled 3 times and vacuum pump bled brakes 4 times and reverse bled once. The pedal is still going to the floor I just ran out of a gallon of fluid plus the quart I purchased to flush and bleed the brakes. The brakes work but the pedal has excessive travel in the it. I have tried to lock them up with the abs wires connected and disconnected and there is no difference at all. The wheels are staggered so there is the same amount of sidewall front and rear so the backs are taller than the stock front diameter. What could i be missing? I am trying to sell my furd nut I need these brakes right before I proceed in selling the ford. To buy lq9 4l80 swap .... my vortec is on its last leg.

I have been wrenching for 30+ years and I have bled this same truck a couple times and I still am stumped

Thanks,
Brock

 

[laidbackbigun]

Bench bled the master cylinder? it might be defective if you did, could also be air trapped in the abs pump.

 

[brocks 97]

Bench bled it. The reverse bleed should have taken care of any air problem. I keep thinking I need to replace the master cylinder but that is why I bought a ac Delco new Mc so that I wouldn't have these problems. I am impressed that when I panic stop the tires only mildly chirp with the abs disconnected. The only thing not replaced was the vacuum booster but my pedal doesn't work until at least half the way down and it has to go to the floor to really start putting pressure on the brakes.

 

[brocks 97]

I also didn't replace the proportioning valve and the factory steel brake lines

 

[df2x4]

Sure sounds like a bad master cylinder to me.