Converting rear drum brakes from SBP to BBP
It's been mentioned, but I wanted to make this clear. If you use re-drilled SBP axles, you MUST use re-drilled SBP brakes (10x1-3/4") No major parts of the BBP brakes will work. That also applies to aftermarket axles with the SBP flange offset but the 5x4.5" bolt pattern. And conversely, BBP axles must use BBP brakes (10x2.5").
The offset on axle flange is different between SBP and BBP axles, so the backing plates are different and can not be interchanged.
It's been mentioned, but I wanted to make this clear. If you use re-drilled SBP axles, you MUST use re-drilled SBP brakes (10x1-3/4") No major parts of the BBP brakes will work. That also applies to aftermarket axles with the SBP flange offset but the 5x4.5" bolt pattern. And conversely, BBP axles must use BBP brakes (10x2.5").
The offset on axle flange is different between SBP and BBP axles, so the backing plates are different and can not be interchanged.