ok try to follow, this gets confusing... First I was having trouble with my timing, can't find the line.. I figured the Balancer was off another engine.... I also replaced the disturbutor adjusted the timing by ear.. Got no ping shifting and running great. Now since my last adjustment of the timing, My Brake pressure disappeared.. SO thinkng it was the breaks having trouble at the same time , I took everything apart, Changed the pads , the Calipers, the drums and shoes, the master cylinder. After all that same problem. When the car is at High idol I have a nice high pedal, when I put it in drive it dissappears. Goes almost right to the ground when I go in drive, and after a few seconds it goes all the way down. I have checked for Vacuum leaks and found none, I took the plug off the Power Booster and I have Vacuum.. and my Vacuum reserve as well... See what I meant about confusing... Any Ideas let me know....
By the way its a 73 challenger rallye
Norm