So after I got my timing dialed in, I took my '72 Supreme out for a test run, and on the way back to the house I noticed a high pitch squeak. Also, when I came to a stop, my rear brakes were squealing. I checked the temperature of both rear drums and they were pretty much the same at around 200 degrees. This tells me that they're not dragging. The squeaking seems to only occur at low speeds (25-35 mph), or I'm just not hearing it at highway speeds...I dunno.

Once it sits for about 10 minutes, it's all good. It seems to start after driving it for a bit.

The rear shoes are fairly new and I'm not feeling a pulll to one side or the other.

This is a new symptom and it has me baffled.
Maybe it's just brake dust and needs a good cleaning?

 

That is certainly a possibility. If you haven't any brake cleaner alcohol works well. Don't go overboard, the cheap alcohol works well.

 

Were the backing pads on the rear drum brakes lubed when the new shoes were installed?

 

Does the sound go away if you lightly apply the brakes while driving. U joints can make a squeaking sound if they are dry. Usually if the u joints are going out you will see red dust around the grease seals.

 

Front disc pads have "squealers" on them as a warning that they need replacement. The squealer is just a small metal tab that comes in contact with the rotor. As the metal tab rubs against the rotor you hear the squeal.

Don W

 

I had this happen on my original '68 Cutlass when I was a teen. It was a failed bearing on the rear axle. The hub was RED HOT and glowing after a 20 drive home from work.

 

Well, I pulled the rear wheels yesterday and this is what I saw on the driver side. Passenger side was good. I put new shoes on today and after a test drive, I'm happy to report a successful endeavor!

 

woww whats the origin of those shoes? old original US or newer replacements maybe overseas??