'74 rear 10" (8 1/4) drums on 8.75???

[HemiDenny]

Installing the 10" drum brakes (from a 8.25 housing) on a freshly re-done 8.75/small bolt circle/ adjustable bearing axles. It appears the housing flange/axle flange to the axle is appx 1/4" too narrow.

I think I can find brake drums for the small bolt circle (1970) 8.75 rear and machine 1/4" off the plate/hardware that goes between the shoes that is interfering with the axle studs

any ideas on other remedies?

 

[Dan Chase340]

Thats your only option if you can't find small bp parts. The big bolt pattern axle's stick out 1/4 more than the small bp axle's.
Or you could go to BBP all round.

 

[Jimacuda]

Installing the 10" drum brakes (from a 8.25 housing) on a freshly re-done 8.75/small bolt circle/ adjustable bearing axles. It appears the housing flange/axle flange to the axle is appx 1/4" too narrow.

I think I can find brake drums for the small bolt circle (1970) 8.75 rear and machine 1/4" off the plate/hardware that goes between the shoes that is interfering with the axle studs

any ideas on other remedies?

The 8-1/4 is large bolt pattern and wont work on the stock 8-3/4 A body small bolt pattern axle. Backing plate offset is wrong and the drum center register is too large.