Whits end with brakes

[Gunnin4ya]

Really at a complete loss on my brakes. I have a 65 with an LS swap, rebuilt the truck from the frame up. New brake lines, El Camino brake booster and GM d52 calipers in the front. I left the rear drums and used a factory gm proportioning valve for the setup. Bled and bled and bled the brakes using a gravity system and a pressure system. I never could get the front brakes enough pressure to stop me. I could push so hard the back would lock up but never the front. Got pissed off and ordered a willwood setup with brake booster, calipers, braided lines, master cylinder, proportioning valve and made new lines front and rear at the correct sizes. Bled the system and got the same results. I tried changing the angle of the rod placement on the pedal and got the same results. I am running over 20 psi of vacuum. Thought maybe the vacuum may be a problem. Tried an electric vacuum pump and got the same results so I took it back off. Hoping someone can just say, hey dumbass do this. I am wondering if I just went hydroboost if it would even make a difference. Just feel like I keep throwing money at it and not coming up with any new results. Any ideas? Thanks in advance.