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Old 11-24-2020, 07:46 PM   #1
jabborabbo
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‘67 drum brake springs...replace ‘em?

‘67 GMC with drums front and rear - I’m doing a complete (except for the master cylinder) rebuild - shoes, hoses, and cylinders. I don’t know if the springs have ever been replaced - they have a very thin coat of smooth rust on them - the truck was kept in a garage all it’s life (except of course when it was being driven). Should I replace all the springs?

Thanks in advance for all replies!
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Old 11-24-2020, 08:37 PM   #2
kwmech
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Re: ‘67 drum brake springs...replace ‘em?

Every time.... if money will allow
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Old 11-24-2020, 09:12 PM   #3
Andy4639
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Thumbs up Re: ‘67 drum brake springs...replace ‘em?

I would. Considering they could be over 50 years old.
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After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 11-24-2020, 09:18 PM   #4
geezer#99
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Re: ‘67 drum brake springs...replace ‘em?

Napa used to sell a complete spring and hardware kit for drum brakes.
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Old 11-24-2020, 09:19 PM   #5
MaximusD
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Re: ‘67 drum brake springs...replace ‘em?

Hi all, I am doing the same replacement, what about changing the drums?, I assume they should be changed, but thought I would check with you all. Thanks
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Old 11-24-2020, 10:15 PM   #6
geezer#99
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Re: ‘67 drum brake springs...replace ‘em?

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Hi all, I am doing the same replacement, what about changing the drums?, I assume they should be changed, but thought I would check with you all. Thanks
Should be able to find a machine shop that can resurface them if needed. They should be marked with a minimum thickness.

I’ve found replacement drums that don’t have the adjustment hole in them and you need to install a slot and plug in the backing plate.
Best to keep stock ones.
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Old 11-24-2020, 10:36 PM   #7
MaximusD
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Re: ‘67 drum brake springs...replace ‘em?

Great, thanks for info!
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Old 11-25-2020, 12:17 PM   #8
weim55
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Re: ‘67 drum brake springs...replace ‘em?

I no longer replace brake hardware on older drum brake (40s-70s) vehicles unless I can get my hands on NOS factory or aftermarket parts. Hardware kits (return springs) in the current auto parts chain have repeatable failure in my experience. Clean and inspect the originals carefully, they are almost always OK. You can't beat that old USA quality.......

Just my two cents of experience.......

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Old 11-25-2020, 12:25 PM   #9
weim55
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Re: ‘67 drum brake springs...replace ‘em?

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Originally Posted by MaximusD View Post
Hi all, I am doing the same replacement, what about changing the drums?, I assume they should be changed, but thought I would check with you all. Thanks
Best to retain those old quality drums if possible, especially if they are OEM. If you do have them remachined beware of the hack running the brake lathe at the auto parts store. Often they do not mount the drum squarely on the machine and then remove many times more material than necc. to refinish. Find that quality shop in town that knows the old stuff and does it right.....

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Old 11-25-2020, 12:25 PM   #10
dagnabbitt
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Re: ‘67 drum brake springs...replace ‘em?

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Originally Posted by weim55 View Post
I no longer replace brake hardware on older drum brake (40s-70s) vehicles unless I can get my hands on NOS factory or aftermarket parts. Hardware kits (return springs) in the current auto parts chain have repeatable failure in my experience. Clean and inspect the originals carefully, they are almost always OK. You can't beat that old USA quality.......

Just my two cents of experience.......

Steve weim55 Colorado
I have to agree. If you are going with new parts from China at the very least don't throw away the originals, you might be putting them back on.
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Old 11-25-2020, 01:13 PM   #11
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Re: ‘67 drum brake springs...replace ‘em?

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i have to agree. If you are going with new parts from china at the very least don't throw away the originals, you might be putting them back on.
x2
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