[jweb]

Originally Posted by Scott2

Time for an update. Got the truck running and driving, 1st drive is here: https://youtu.be/gHD6GUF6IhM

This was with open headers, it now has a full exhaust on it and its a little more civilized.

Brakes are driving me nuts. I have a POL master cylinder/vacuum canister mounted to the firewall and Wilwood GM disc brakes all around. I bench bled the mc, installed it and opened up the rr bleeder. Took forever (days) for fluid to get down the lines and start dribbling out. Since then I have bled the brakes several times. I am not getting air with the fluid when I open the bleeders. The pedal pumps up nice and firm, then when I start the engine the vacuum kicks in and the pedal goes most of the way to the floor. The truck will stop but slowly. I have bled a pint of fluid through the lines and it still acts this way. What am I missing/doing wrong?

Getting an alignment tomorrow - if I can't figure the brakes sorted out shortly I'll trailer it down there and have them look at the brakes too.

PS - I think every fitting on the mc leaked and even though I had plastic and a pile of towels and rags under it it dripped on my inner fender and wrecked the paint. It of course ran down the side and then spread along the inside flat edge of the inner fender so all that paint is gone. Crap.

First you should check the booster push pin to master cylinder clearence, you can use this https://www.amazon.com/Power-Brake-B.../dp/B079QGXY55
Here's some good info on the clearance you should have: https://techtalk.mpbrakes.com/how-to...r-cylinder-gap

Also, test the check valve on the front of the booster. You should only be able to blow air through it one way. If you can blow through it both ways or not at all it's bad.