Quote:
Originally Posted by jcgrobbe
So from what I've been able to gather, these came with 11, 12, and 13" drum brakes on them, how do I go about identifying the size parts I need to order? Do I measure the ID of the drum, or do I measure the backing plates?
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The Eaton's came with 11". The drum I.D. will be cast on the drum itself. When measuring rear brakes, measure the I.D. of the drum as well as the depth, or width of the pad. You can convert to the 13" brakes found on 1973+ GM trucks. They are easier to find parts for.