A few years back I picked up a 8 3/4 with the small bolt pattern and also 10 drums. The thing I did stupid was forgot to keep of ask the year of the donor. Is there a difference in the drums from year to year

Those SBP A body 8 3/4" came with skinny 10x1.something (1.25 or 1.5 or 1.75? don't recall off hand) drums. If you want brake parts ask for a 71 plymouth duster 340. I believe those skinnier 10" were A body 8 3/4" only item.

Yep, rear brake size is 10" x 1¾". That is applicable for A-body 10" rear drums on 7¼" and 8¾" rear axles, all years; I'm not sure about the 10" drums that were fitted to 8¼" rear axles, but those don't matter for this discussion because they're big-bolt.

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The only difference between the years is the fins on the drums. They will all interchange.

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