Welcome j bo! I have not done the disc conversion but I would caution you to undertake unnecessary work. My opinion is there is not much to be gained by doing this. I would ask a few folks here what they think and I would imagine the cobbled mess of parts sold as a "kit" is little to no improvement in braking. Remember your front brakes are doing most of the work.
jtorre4272 did it. I don't think he was thrilled with the process / results. Swapping in a new rear from a Chevy or GMC is a fair amount of work just to get disc brakes. Good luck!
I strongly 2nd MrKenmore's comments, with 1st hand experience.
I won't post the $$$$ figure here, but I spent an ungodly sum of money attempting to get the 1970's vintage Cadillac brake kit to work dependably on my daily driver 800. I've *vented* out loud here over the 1970 Cadillac components previously, and other BP members have suggested that maybe issues were due to the fact that my 800a is a daily driver, vs a sometimes weekend cruiser. I don't know.
IMHO, the only positive that the Cadillac brake kit has going for it, is its provision for an emergency brake.
The Kit that all the LL dealers sell is manufactured by TSM (The Street Machine).
TSM sells a much better kit, and, aside from the emergency brake thing I mentioned above, I struggle to understand why our LL dealers are reselling only the Cadillac kit.
The
"much better" TSM kit I have on my 800a currently uses Willwood components, and now, my 800a has excellent, consistent, reliable brakes that do not pull or have any other issues. It will stop on a dime and give back change ! The calipers and replaceable components are Willwood, but they are also components that are used on the Corvette, so if you break down 2 states away from home, replacement parts are as simple as a stop at your favorite auto parts store. The only issue I have with the Willwood kit is that there is no provision for an emergency brake. I'm currently working on plan B for that.
Link to pics of the TSM Dana 44 Willwood kit that I have installed on my 800a here:
http://www.binderplanet.com/forums/...800a-build-thread.119223/page-22#post-1004246
There are pics buried somewhere in there of the Cadillac kit also, if the OP is so interested.