BRAKE DRUM QUESTION
Exactly.
The only cars that had 10x1-3/4” drum brakes were A-bodies that had the 5x4” pattern.
The 5x4.5” bolt pattern drums were 10x2.5”, and those axles use a different axle flange stand-off so the backing plate offset is different.
If you want to keep the 10x1.75” drums but use a 5x4.5” pattern you need to re-drill the stock SBP axles or buy axles that have the SBP axle flange offset and the drums must then be re-drilled for the 5x4.5” pattern.
Otherwise you need to use BBP axles with 10x2.5” drums and backing plates. No mixing and matching!
Exactly.
The only cars that had 10x1-3/4” drum brakes were A-bodies that had the 5x4” pattern.
The 5x4.5” bolt pattern drums were 10x2.5”, and those axles use a different axle flange stand-off so the backing plate offset is different.
If you want to keep the 10x1.75” drums but use a 5x4.5” pattern you need to re-drill the stock SBP axles or buy axles that have the SBP axle flange offset and the drums must then be re-drilled for the 5x4.5” pattern.
Otherwise you need to use BBP axles with 10x2.5” drums and backing plates. No mixing and matching!
