thanks for all the advice. Its actually a firewall mounted master cylinder (I believe its out of a 78 fairlain), if that makes any difference. The pedal is sloppy regardless if vacuum is applied to the booster or not.
52 suburban rat rod. 350/350, 9-inch ford rear, independent suspension with 2-inch drop spindles, power rack, two-tone Mexican blanket interior, paint by mother nature
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