Drum brake size change

72bluNblu said

Not entirely true. The axle flange offset is different between the 8 3/4” SBP axles and BBP axles. 10x2.5” drums only work with BBP axles. So yeah, the 10x2.5” drums can be used on any 8 3/4” housing, but they must be used with BBP axles. They won’t fit with the stock A-body SBP axles no matter what backing plate you use.

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Good to know, thank you.
The wheel lug studs are a different diameter as well I see. The one's I got from Dr. Diff are a lot thicker in diameter than the ones in the 8 3/4 sbp axles I have. He is going to hate me...lol. Hope he is good about returns. I just got the stuff yesterday, and its all new in the box still so I don't expect it to be a problem.
I'm sure you guys are thinking - get rid of the sbp stuff and bite the bullet. So many doors open with the bbp pattern for sure. One day for sure...