I'm looking for a better rearend to go behind my 383 other than my 2.77 9 bolt. I see plenty of drum rearends for sale so I'm wondering what all needs to be swapped out to get it over to rear discs?

 

Beuler...Beuler

 

not much, not to sound mean but use the search button. its been done and there is even a detailed thread

 

do you need to swap just the axles or is there anything else?

 

I never did the housing swap but, from what I have seen is old posts. you need to cut the top of the axle flanges off and drill the 4 bolt holes to mount the caliper mounting plate. I had used my old drum axles in a 84 disc rear with no problem. I read on here though that some discs (factory ?) will not clear the flange on the end of the actual axle. I guess If you needed to a machine shop could turn the outside of the flange to fit inside of the disc and the problem would be solved

 

Well you said a better rearend, did you want just disc brakes, or a stronger one as well? http://www.moserengineering.com/ should be able to help you out.