Thread: rear disc brakes

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does any one know if a disc brake setup from a 85 firebird im assuming 7.5 rear axle wil bolt up to a early 70's 8.5 rearend without too much hassle?

I gathered up parts to do a rear disc but didn't finish it. I pulled the rear set up from caddy front wheel drive cars AS i remember it the center hole on some GM rotors are smaller than the boss on the axle shafts also not all lug studs are the same size I have seen the caddy rears in S 10 set up the key is the center hole must be a tight fit on the axle and the lugbolts must match the rotor hole size, or drill every thing out to use bigger studs