Pin versus Slider Disc Brakes

BigBlockMopar said
The sliders on my '73 sure sounded like they where loose enough to drop off any time.
Every once in a while I would rebend the tabs to give them some more preload on the calipers, but after soo many miles they probably lost strength and it started to sound like a swaybar or strutrod-bushing had failed.

RustyRatRod said
That's why new hardware kits are made.

Sounds like you didn't install the little rubber bands in the hardware kit, those are nice for quieting down the slider type brakes. New hardware kits are a good thing.

But, if the caliper bracket channels that the calipers slide in are worn or pitted that can cause similar symptoms as well. Only way to fix that is to weld them up and file them smooth again (PITA), or buy new caliper brackets.