Rear Brake Identification

Alaskan_TA said

If he was right & it came from a '68 B-body & it has the original axles then the drums will have a 4.5" wheel stud pattern.

You can measure the backing plate diameter also.

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Yes, it does have a 4.5" wheel stud pattern, should the backing plate diameter have the same diameter as the interior of the drum? if so that makes it a lot easier.

Edit: Just measured, and the backing plate's diameter is 11"