Posted By: 6PAX
A-body brake drums/Strange large bolt axle problem - 08/16/09 05:04 PM
A couple of years ago I bought a used set of Strange large bolt pattern stock length axles for the 8 3/4 rearend in my Dart. I've finally got around to test-fitting them before I have new bearings installed. I have run into a problem with the brake drums and the axle lug bolt flange. The axle flange measures 6 1/4" in diameter and the drum lug-hole mounting surface is only 5 3/4" in diameter. They are 10" drums and the flange on the small bolt axles I am removing measure 5 3/8" in diameter. I wasn't aware that I was going to have to change the drums to accomodate the axles (other than drilling them for the larger pattern). My question is, what drums will I have to get that will have a large enough mounting surface to accomodate the 6 1/4" flange on the axles?
Posted By: D_C
Re: A-body brake drums/Strange large bolt axle problem - 08/16/09 05:09 PM
You could take the axles and brake backing plate to a brake supply company and have them match everything up.
Posted By: MoparJoe
Re: A-body brake drums/Strange large bolt axle problem - 08/16/09 05:14 PM
You may run into another problem- are the axles for A or B body brakes? The width is different and B bodys add 1" to the overall width of the rear.
Posted By: 6PAX
Re: A-body brake drums/Strange large bolt axle problem - 08/16/09 05:17 PM
I can't say for sure. When I bought them they were advertised as stock length large bolt pattern axles for an A-body 8 3/4 rearend. I assumed this meant that I could use the A-body drums by drilling the large bolt pattern in them. Is there a way of telling if the are for A or B-body brakes by looking at them?
Posted By: RapidRobert
Re: A-body brake drums/Strange large bolt axle problem - 08/16/09 05:25 PM
Those aftermarket A body axles are made for use w a BBP 10 or 11" drum/backing plate unless they were special ordered for the stock SBP 1&3/4" shoes & corresponding 1&3/4" drums(& drums then redrilled to BBP) and a smaller flange. I would pickup a set of common BBP 10" drums/backing plates.