Brakes have me baffled!

Ok, gentlemen... The verdict is in.

The master cylinder was no good.

I was going to replace the pushrod with the adjustable kit I picked up, and was going to pull out the stock distribution block and put in a 'T' in it's place. And then install the Wilwood proportioning valve on the back line.

Before I did any of that, I bled all four corners again. The same result, a mushy pedal.

So I stopped in at AutoZone and picked up a new (not re-man) master for an '81 D150, bench bled it for 40 minutes - made sure not a single bubble was to be found anywhere - installed it and bled everything again.

I've got brakes! And a good pedal!

I'm still going to remove the stock valve and put in the Wilwood proportioning valve, but for the time being it stops just fine. Even the line lock works, I can hold the car up to around 3500 before it pulls through the brakes. I can lock up all four wheels without pumping the pedal.