Rotors/Calipers/Spindles Interchange???

I've been trying to figure out the right combination of parts that I'm going to need to finish my '63 with CPP mini subframe kit and dropped spindles. I'm doing a "Bills II" style R&P setup also.'

Here's what I've got - a set of cast Ductile Iron 2" drop spindles (spindles made by Superior Spindles), complete with discs and calipers. I think that this is the same 2" drop spindle that CPP sells in their 2" drop spindle brake kit. I was using this front brake setup before I decided to use the CPP mini subframe, and was happy with the performance.

I ordered the CPP mini front subframe kit with the "curved" lower arms to clear the tie rods with the R&P setup. I like the kit very much. The issue I have is that the integrally cast steering arms on the spindles hit the lower control arms, severly limiting the turning radius. It seems that the issue is the design and shape of the integrally cast steering arms on these spindles.

I think that what I need to do is buy a set of the forged 2" drop spindles with the bolt-on steering arms (the "newer" design from CPP). What I have not been able to figure out is if the discs and calipers that I already have will work with the newer style spindles. Can anybody shed some light on this issue? I'd like to be able to re-use the discs and calipers that I already have, but haven't been able to confirm whether or not they will work.

Any help is appreciated.

SteveM.

Have you installed the r/p kit already? If you are trying to use the stock nova arms for Bills kit I think you will have some issues as he requires a different steering arm than that of the first gen nova.

If you haven't installed the kit yet and are having problems with the steering arms in the stock location it will not matter because with the rack kit installed you will have a front steer set up. Which then goes back to using the steering arms that are necessary for Bills kit.

I would call CPP and ask them if what you have already will work with the newer style of spindle. I am guessing that they will but the safest bet would be to call them.

67Church:

Thanks for the response. I was in the middle of reading your 35 page thread about the Church Boys conversion as you were responding. Great work you have done there. Now I'm thinking about whether it's worthwhile to change gears and use your design versus Bill's.

I don't have the rack mounted yet, but I did machine some rack mounts based on Bill's geometry which I will weld to the factory crossmember. It's basically in the mockup stage right now. I bought some of the first generation CPP "curved" lower arms to work with the Bill's II setup (probably close to 2 years ago). Now I'm second guessing myself due to the possibility of bump steer and other geometry concerns.

I have already swapped the spindles from side to side during the mockup, and that's where the interference occurs. I think it's just a case that the 1 piece drop spindles/steering arms are not compatible with the CPP curved arms and front steer setup. I will end up buying new spindles and the correct arms from CPP, but I'd rather not have to buy new brakes as well.

Thanks again for your help and support of this activity.

SteveM.

Steve, the only reason that you would have some bumpsteer issues would be using the wrong steering arms for the kit. Swapping the spindles from side to side will cause this problem because of the wrong dimensions with those arms and they will have a twist to them that is now going the wrong way due to switching them from sid to side. With the proper arms you should have good geometry and no issues with bumpsteer. Keep us informed with your progress.