67 drums
 

Hey guys I have a noobie question. I have owned a 64 chevy truck had that for 6 or so years but I noticed the 67 brake drums are different them the 64. What is the spring around the drum? I noticed only 2 if i remember have them on my truck and the other 2 dont. Thanks

Re: 67 drums
 

I'm not 100% sure, but I think they were put on to reduce vibration & noise.

Re: 67 drums
 

vibration and noise is what I've always been told. Like when you run your finger around a wine glas... the ringing.
I've run a 69 GMC without the springs and was amazed that I did hear a tick of that ringing.

Re: 67 drums
 

Oh okay cool. Was tripping out cause I dont have them on all of them and thought maybe they were missing. NO big deal now i know. Thanks fellas

Re: 67 drums
 

Also, I think they only put them on the front drums. I don't recall ever seeing them on the rear.

Re: 67 drums
 

they were on the rear of my old 69

Re: 67 drums
 

They are for vibration and noise and as far as I know were only a factory item. I don't remember seeing any aftermarket drums with the springs although some had the groove so you could transfer the springs to the new drums.

Re: 67 drums
 

i have seen them on front and rear drums but i wonder if it was like a dealer added thing that was maybe added if someone was complaining about thier truck cause i have seen the same year trucks with and without them

Re: 67 drums
 

They're on all four of my drums, I kinda doubt something like that would be just a dealer add-on.

Re: 67 drums
 

Oh heck. Now I'm going to have to pull off my back wheels.

Thanks guys!!! :(

Actually, a great question. Never really thought about it and
swapping out the springs sounds tortuous but ... doable.

Re: 67 drums
 

aftermarket drums don't have the provisions for the spring, so those drums don't have them, the originals (and probably old aftermarket ones) had the groove

Re: 67 drums
 

On my truck ony the driver front has it and the rear passanger has it..So should be fine. I dont think its a must to have it right?

Re: 67 drums
 

no it isn't a must have... like mentioned above, the aftermarket ones (all you can buy new) don't have them nor the provisions for them