Alex72cutty

Joe, I'm looking to do the disc convert for my 72 cutlass coupe.. I want to keep my 14inch rally wheels. What I dont mind buying in different places.. What is the max size disc I can have and still use my rallys?

Olds64

Alex, I moved your post to a new thread. Hopefully you get a quicker response this way.

joe_padavano

If by "rally" wheels (which is a Chevy term) you mean Super Stock II/III wheels, then all SSII/III wheels clear the 10.75" factory disk brakes with the factory style calipers. Nothing larger will clear due to the backside contour of these wheels. If you have Super Stock I wheels, there are two different types. Early ones will not clear disk brakes. Later ones also fit the stock 10.75" rotors. There are vendors who sell 10" diameter aftermarket disk brake kits intended to clear the early drum-only 14" wheels. I would not waste my time or money on these.

Alex72cutty

Ok. I have the bolt on style rims. I guess SS/II wheels. What would you suggest if this was you? Thanks!!

joe_padavano

This:

Get either an original set of disks or a repro set of the factory disks.

Alex72cutty

ok. I thought I was going to have to upgrade to 15 inch wheels.. Anybody you know that sell a repro set of factory disks?

Olds64

Alex, here is a recent thread with some good info on factory disc setup:

https://classicoldsmobile.com/forums...onversion.html

From my understanding, you will either have to buy aftermarket parts to convert your car from front drum to front disc, or you will have to find a parts car.

Alex72cutty

Ok thanks for your help.

Alex72cutty

Ok. I'm going with the 10.75" disks? Just wanted to know if anyone knows a good brand/place to get them repro?

joe_padavano

The rotors, calipers, hoses, pads, wheel bearings, and master cylinder are all stock items available at any auto parts store. There are four repro items you need from aftermarket sources. The disk brake spindles, caliper mounting brackets, brake hose mounting brackets on the frame, and the proportioning valve. Since these are common with Chevelles, EVERYONE sells these. Check out this thread.