I have been reading about the rear disc swap for my 66 chevelle for along time. Seemed to me the best way to go was with the factory rear disc camaro setup (79-81).
:confused: I bought a setup (brackets, rotors, calipers, master cylinder, prop valve) from a guy on Ebay. Pulled my rear end apart and pulled all the drum junk off of it. Installed my brackets, reinstalled my axles, went to install the rotors...., and they don't fit. The axle outer diameter is larger than the rotor hat inner diameter so the rotors won't slide over the axles. The bolt pattern is the same, and everything else including the brackets semm to be straight forward and work, so how did I get snagged up? In all the articles I have read, no one has mentioned this problem before. Do I have to machine the axles down to fit the rotor hats? I would just go to Autozone and buy another rotor to check to make sure I have the right ones, but they don't carry them in stock, evrythimg has to be ordered. Any one ever have the happen to them? :confused:

I have read that the outer axle flange (where the lug nut bolts are), needs to be cut down to fit into the rotors.

i have seen it mentioned also. another thing to consider is just measure the axle flange and have the rotors machined to fit. a rear rotor will last you forever, so getting that done seems to be a good soultion to me. there is plenty of meat there.

Yes, you have to pull the axles and have them machined down. If anyone needs a set already done in Washington State contact me as I have a extra set already done. Drive over and pick them up kind of a deal....

Not positive, but isn't the inner "locating hub" on the axles also just slightly too large? I thought that had to be machine slightly also?

Not sure, I ordered new axles from Moser, and they did this at no extra charge...

The inner of the axels need to be turned downlike an 1/8". This is what I done on my 64. I also had to build a spacer to set my backing plate in about 3/8" to located the caliper properly on the rotor. Turning the rotors out would work too but I believe saving probs in the long run if you take a trip and break down easier to replace stock rotor or find someone to turn out a rotor to fit your application??

any other question e mail me...

Brian