Frustrating drum brakes problems

[371RR]

Yeah, larger cylinders will give you more braking power but you really don't need those in the rear. If anything, if the braking system is putting up plenty of PSI, an adjustable proportioning is pretty cool and the SM brake material doesn't fade (at least nearly as quick) on heavy breaking and the extra pedal pressure is usually minimal. Can't remember but I'm pretty sure I have SM shoes on my 66 but I also went with a smaller diameter MC from a 69 Valiant and pedal pressure was decreased. Had to adapt the lines but a local private auto parts pretty much gave me the fittings. Too bad they are gone now as they were really good. Also had to modify the brake light switch bracket but it was minor. I don't usually play games with mixing brake system parts like that but at the time I was really low on funds and had the parts car Valiant sitting there with a brand new master on it plus I started learning more about brake systems. Thinking back on it, that was 25 years ago? lol

Thanks Cranky...I had to go thru all that rigamaro with my Dart. Wilwood discs, adjustable prop valve, particular bore MC, but don't have any problems with it. But the car only weighs 2920 lbs. With 580hp I still needed to stop it!!

 

[Moparsmitty]

I've used NAPA standard non-metallic brake shoes like these on several cars over the years and never had a problem. Hard to say why your brakes are so noisy.
http://www.napaonline.com/napa/en/p/RTSTS333/RTSTS333_0319605987

 

[1967coronet]

On the wheel that's making the noise. Pull the drum/ hub and look close at the inner edge of the drum, see if you have a new shine spot or ring.
Only reason I bring that up is it happened to me once on my 67 on the right front, The steel of the shoe was just a hair wider than the surface pad and would rub the drum when applied, drums had been turned also, I took aprox 1/8 off the side of the steel or made it even with the pad and no more scrub/ noise.

 

[Darter6]

Ok.I know this is Old school but remember the "Spring" on the outside of the drum ? It was placed there to dampen the reverberation of the shoes and drum and to stop the low speed squeal . Just thinking out loud......Maybe ??

 

[Scatransit]

Agree with all that's been said...Is the noise coming from the front? If so, double check the wheel bearing adjustment. Good luck with it!