Quote:
Originally Posted by lizziemeister'sV6
You don't need to rivet the front drums to your hubs. Your back drums are loose. What you do need to do is to get the proper drums for your GMC - Chevy drums are not the same as GMC. Lots of parts stores will tell you they are the same - they are not. GMC's have an offset near the lug bolt holes. Take your old drums to compare when you get new. Hopefully other GMC owners will agree with what I said. Any comments?
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I took a closer look and some measurements today…and I stand corrected. The center bore size is the same both front and rear at about 0.357”. Also lizziemeister’sV6 was correct about the flange being deeper. When I put the NAPA part on the rear, the drum was not deep enough to completely cover the shoes when fully seated. I would estimate the NAPA drum lacks about 0.250” or so.
They are not the same. I will look at the rock auto drums, but not sure they won’t be the same as the NAPA.
Thanks for the help.
I’ll keep you posted as to what I eventually figure out, but if anyone has any additional suggestions or information, I’m all ears.
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