Here is my problem i have a 71 chevelle and have all wheel disc SSBC on the rear,stock on the front and when i try to bleed the brakes my front bleed fine so i moved to the rear and pumped and got nothing no fluid so i went up to the master cyclinder and the back reservoir was still full of fluid beats me so i took of the line for the rear brakes off the master cyclinder and pumped the brakes and no fluid is coming out of the rear port what could be the problem bad master cyclinder because this is the second master cyclinder i have had to do this.

my guess is you're pushing too far when you bench bleed the MC. I did it to 2 of them too graemlins/clonk.gif