11x3" backing plates??

Super-Cuda said
Just looking at the pic the op posted.

If the drum is 11x 2.5, the brake shoe face surface will also be narrower.

The offset of the backing plate for the 11" brakes shouldn't matter.

Unless, of course the inside of the brake shoe is different and offset more into the backing plate.

Probably the reason for the difference in backing plates for 2.5 and 3" brakes.

View attachment 1716480526

You've got this backward.

The axle flange offset is the same for all BBP axles. The axle width ends up being the same for all the axles that had 11x2", 11x2.5", and 11x3" brakes. Which means that the backing plate offset HAS to be different for each of the different width 11" backing plates. All of the different 11" drum brake widths have to be matched between backing plate, shoes and drums. None of those parts are interchangeable between the different width brakes.

abodyjoe said
yes, i know they are different then 2.5" and only available used. was just wondering
how hard they are to find these days. maybe I'm better off using the 2.5" stuff i already have.

I'd be less concerned about finding the backing plates and more concerned about finding another set of shoes or drums if you ever needed them.