help, new to c-bodies and confused.

[Sonoramic]

Hello guys, I have been searching post for a couple days now and haven't found the answer to a few questions. So here goes.

Will a 69 new yorker front brake rotor fit on the 73 up brake swap spindle?
Leaving the caliper out of the equation so to speak.

The reason I ask is kind of confusing but I will try to explain as clear as I can.
I saw a YouTube video (1956 Desoto firedome sportsman YouTube) if you care to look it up It is a very nice yellow car worth checking out.
Half way through this video he has a couple pictures of a bracket he made to install 69 new yorker disc brake calipers on his 56 Desoto. He says the rotor is a bolt on as the spindles are the same between the two models.
It looked like a very clean well done job that impressed me more than what I have found available through a couple of the normal brake swap venders for my 56 desoto.
So since I am forced to do this on a small budjet I think I will give it a go at making my own brackets.
I have a pair of rotors and calipers from a mid 80s dodge truck that I think will fit the 73 up swap spindles. I tried them on a 74 duster and they went right on. But am unsure if they fit the 69 New yorker spindle which is supposedly the same as my Desoto?
These are the same dia. & thickness as the 69 New yorker rotor but am unsure of the bearing interchange between the two.
I hope this makes sense.
In my research I have seen the terms bud, kelsey hays, unicast, two piece hub & rotors, fixed, floating and sliding calipers honestly I am still somewhat confused as to what is or goes to what.
I even seen on the home page of this site that perhaps the C-body began in 57? So now I don't even know if my 56 is a C-body like I had thought.
I believe I have created more questions than answers for myself. Hope someone here who knows these cars much better than i can clear some of this up for this new guy.

 

[mobileparts]

NO. The 1969 - 1972 "C" Body Front Hub & Rotor Assembly (which the aftermarket world was a 1-piece; while -some- N.O.S. original Chrylser -- which was Kelsey-Hayes -- they were the manufacturer for O.E.M. Chrysler -- were 2-piece)
is --- radically --- different from the 1973 & Up Hub & Rotor Assembly....

All the disc brake conversion kits are geared with 1973 parts -- basically because of the availalbility of parts -- and especially the rotors -- because the 1973 & up Rotors are commonly available (although almost all if not ALL chinese made)......

I have the 1969 - 1972 "C" Body HUB & ROTOR Assemblies -- and that's partially why I am a big hit at Chryslers @ Carlisle --
as HEAVY as those "puppies" are -- it's nice to put a pair on a hand truck and roll 'em away for FREE shipping!!!!!!!!

 

[Sonoramic]

So if I am understanding this correctly the 69-72 were a Kelsey Hayes two piece hub and brake rotor. These used a single piston caliper held on by pins?

Where does the Budd brakes fit in? Were these the fixed 4 piston caliper? What years for these?

Were the 73 unicast rotors Kelsey Hayes also? Did these use the flat spring clips to hold the caliper on machined ways that are set in anti seize to keep them sliding unlike the 69-72 pins?

Were their any others I haven't mentioned?

Do all three of these different year spindles have a different size bearing mounting diameter? Or depth?

Maybe a few of you guys know the answer to one or more of my questions from working on your own cars brakes or your service manual. Any help at all is very much apriciated.
At this time I don't have any of the older parts to measure or compare. I do have a 75 rear disc set off a 75 but never felt it would be much of a benefit to adapt onto another car over the drums.
More interested in just the front disc types.

My mission is to get disc on my 56 desoto and would like them to be from a c-body of similar weight. I am hoping to pull a camping trailer with it someday.
Trying to learn what chrysler used when and l plan to work with this information as a starting point to make the brackets needed to adapt
whichever caliper and rotor would stop a Desoto and trailer going down a mountain. I am worried the factory drums would not be up to the task.

 

[MrMoparCHP]

What I do know is all parts must be done as a set. No mixing and matching years.
You can take a 73 spindle, rotor and caliper and put it on a 69, as a full set, like wise with other combos.

Alan

 

[ceebuddy]

Leaving the Budd brakes out, I think the main difference between the 69-72 setup versus the 73 brakes are the spindle diameter and accordingly, the diameter of the bore for the rotor. Or was it the bearing size? Not sure.

 

[Sonoramic]

Thanks for posting guys.
I have found a big problem with my car is it is a 56 which has a strange king pin coil spring set up. So just bolting on the 73 up spindle will not work. I believe the king pins are a strong enough design to build off of. So to adapt a disc rotor will not be as easy as the 57 up cars where you can swap spindles out. I will have to hand make something here.

 

[commando1]

Did you know Fatman has a front chassis setup for your car?
I would absolutely go that route on a 56 and down Mopar.

Posted via Topify on Android

 

[MrMoparCHP]

Have you checked with Scarebird to see if they have a kit?

Alan

 

[Sonoramic]

I will look into the scarebird and Fatman products.
I have seen mention of a method to lower a 56 from Fatman that is used with a disc brake kit from another vender.
I really had no plans to lower the car. Kind of want to use it more utilitarian like a truck than make a lowered cruizer out of it. Plans are to set it up heavy duty more like a tow package to pull a camper.
I put a HD Dana 60 out of a 75 ford wrecker under the back. Cut off the floaters and used c-body axles and drum brakes.
I probably should have had all this worked out before now. The frame has already been sandblasted and painted. Body back on. Redoing some paint on the frame wouldn't be out of the question I guess for the right disc brake option.
Does anyone know anything about the Budd brakes? Does anyone have them on their car?
Do you like how they stop your car? I have found little mention of this style disc system.
I am not sure but I think I read they were a fixed 4 piston caliper .

 

[Sonoramic]

I found a imperial site that discusses the availability problems of the 66-69 bud brake rotors so those are out. They talked about a supra rotor being modified as a replacement for 30.00 each to go on the imperial hub. Calipers are available still. These are a fixed caliper design that could possibly simplify making a bracket to mount them?
I also seen some of these c-body brakes are Bendix could be the 73 up stuff? . Still sorting it all out as to what is what. Couldn't find anything at scarebird for this year Desoto.