BBP Rear Brake Backing Plates for 1972 8.75

Yes we are talking about 10 inch brakes. All of the newer (mid 70s up)rears had the same backing plate bolt pattern on the axle flange on the end. The axle tubing diameter is irrevelant if it gets larger in the flange area. SOME of the later BBP 7.25 rears only had 4 of the 5 mounting holes drilled but the pattern is the same.

The difference in the SBP A body 8 3/4 backing plate and all of the later backing plates is the offset between the drum and the backing plate. Stock abody SBP 8 3/4 axles had a wider hub..they stuck out further. Using those backing plates with later BBP drums cause the drums to rub against the backing plates or lock up altogether.

The BBP pattern backing plates can come off of any 8 1/4, 8 3/4, 9 1/4, 9 3/4 dana, many trucks, and yes BBP 7 1/4s