Brake shoes help (8 3/4 BBP)
The drums from the 8.75 look measure identical to the ones from my 7.25
Measure the depth of the drums from the 8.75 and the 7.25. Did the drums from the 8.75 actually fit? I mean, do they mount up on the axle flange without spacers and without hitting the backing plates? Because if the backing plates and shoes are 10x1.75", the drums for those brakes are not the same depth as the BBP 10x2.5" drums. Is there more than one set of bolt holes drilled in the 8.75" drums?
I suppose the other possibility is that the 8 3/4 axles are in fact BBP with a BBP axle flange offset and someone put the SBP 10x1.75" backing plates and shoes back on there, but with a set of BBP 10x2.5" drums. Obviously you can't use the BBP drums with a SBP axle flange offset, the drum hits the backing plate because the axle flange isn't out far enough. But, I don't know how it would line up if you used a BBP axle flange offset with the SBP backing plate and a BBP drum. Obviously you'd have a lot of unused drum surface, even if nothing interfered, because you'd have a 1.75" wide shoe riding around in a drum wide enough for a 2.5" wide shoe.
That would actually be a decent scenario for you though if that's the case, because if that's what happened you could just install the BBP 10x2.5" backing plates and you'd be ready to go. One of the set ups you have either doesn't or won't fit, it's just a matter of which one is wrong. The SBP ones that are on there now, or the BBP ones you want to use.
