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The push rod adjustment has been to long,to short,and right on. Pads are not the issue,it won't even stop well at an idle. I believe the booster is bottomed before the master has enough travel. Could a drum booster have shorter travel than a disc booster? Come to think of it this is the 3rd car I've known of with this problem. The 3rd car was a 69 Hemi Charger Originally power drum brakes converted to disc. The booster was removed and converted back to manual disc. Problem solved. Removing the power
brakes on this car is not an option.
Doug







Let's assume everything is A-OK, as far as the install and mechanical soundness of the parts,...is this car an automatic?....a healthy cam lift?, if so what is the engine vac at idle?, if it's under 12"vac, you need a vacumm resv./assist pump,...been there done that