B body rear brakes onto A body axle

Uh, are you really running C-body brakes?

Meaning, you changed out your spindles to C-body spindles and re-drilled them because the lower ball joint spacing is different between A and C bodies? And you're running 1973 C-body spindles, because those are the only ones that use the same upper ball joint diameter? And of course they're 5/8" taller too.

Or are you running the later B/R body 11.75" brakes which bolt right on to 73+ A, and F/M/J spindles?


Don't want to hijack the topic but I'm using the stock '73 A-body disc spindles with a homemade outer bearing collar to make up for the bearing difference in the '73 C-body rotors (11.75"/1.25").
With 2 simple washers behind the bracket the calipers lined up perfectly.
Been daily driving this setup for over 3 years already.

In my case it was a case of making use of what I had on the shelf and see if I could make it work.
It's not a 'lightweight' upgrade and setup ofcourse, and I would def. like to go to aluminium calipers in the future, but that would offset the brakebias unfavorable in my case, so for the time being I'll keep using this.

Nice thing about this setup is the trackwidth remained the same, or perhaps even a tad narrower than the 'stock' A-body discbrake system.