Issues Adding Power Brakes 54 Chevy

[Nick Z]

I am adding and under the floor 47-59 Chevy/GMC Truck, Power Booster Kit (Part# BB-T4755) to my 3600 series 54 Chevy pick-up.

Kit instructions that I followed: https://www.performanceonline.com/bl...r-booster-kit/

I have run into a few small issues in the process. The initial kit purchased from Tuckers appeared to be missing a few pieces to connect the pedal to the booster, I ended up using a Heim bolt and thread all to connect the booster to the pedal. It feels like I have the correct rig so the it does not press up on the pedal and it does not press into the booster when at rest. I was having trouble getting the pressure to build up on the bleed(s). I discovered every since wheel cylinder was corroded to hell, so I replaced all of them. I also replace most of the brake lines so that they could connect to the correct ports on the master cylinder (front lines to the aft port of master and rear to the front port of the cylinder.) I am still having issues getting the bleed to build up enough pressure to stand on the brake pedal with the engine off. I am able to build a little pressure, but as soon as I turn the engine on the pedal goes to the floor when pressed. I tried to reverse bleed without positive results. I also tried to use the bleeding hand tool without positive results. I then tightened all of the brake pads so that they scrape a little when I spin the tires while on jacks. I then did a test with the truck on jacks by spinning the tires and having someone press the brakes. The tires do stop, but I am still not getting the amount of pressure I want on the pedal, as I did with the old master installed. I called Performance Online Tech support and Tuckers, but have not been able to figure out the issue. They told me I MIGHT have a bad part, either cylinder or booster. Please let me know what I can try to fix the pressure issue. Thanks.