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Larry,

Very good information you posted.

Interested in upgrade to 13" drums too, for Dana 60, is it correct that your discussion above is for Eaton rear axle? How much applies to '71 Dana 60s with 12x2.5 brake shoes?

A few questions, on possibility of upgrading a '71 Dana 60 12x2.5 brake to 13 inch drums. Thinking of two/three possibilities while keeping stock axles:
1). We're their Dana 60 applications that used 13" drums which can be switched to '71; and

2). Can Dana 70 13" brakes be switch, all from backing plate out. Maybe 80s Suburbans?

3). Other option, e.g. 70s Fords 3/4 ton that used 12x3 brake shoes, chevy dually brakes



Thanks,
Les