1967 Pontiac Firebird Brakes Work Father Replaced Master Cylinder Twice Also

1967 PONTIAC FIREBIRD
300 MILES
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The brakes don't work. My father and I replaced the master cylinder twice. We also replaced all the brake lines and 3 of the 4 wheel cylinders. We have bleed the system many times and the pedal gose right to the floor. Why don't my brakes work?

The car is a 1967 Pontiac firebird 326 it has drums all the way around.
Nov 26, 2012 at 3:27 PM
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HMAC300
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it has to be air in system did you bench bleed master first? if you didn't you have air in system, try apower bleeder then go lr rr lf rf for bleed sequence.
Nov 26, 2012 at 3:30 PM
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