I think I know the answer but... Is a 1979 Córdoba a B body? And can I use the brakes off it on a 69 road runner? What parts are required from drum to disc conversion on the 69 runner?
Thank you

It is a B-Body but the spindles are different. I know you can put e-body or a-body spindles on the early b-bodys and use cordoba/magnum brakes. Not sure the other way.

........And can I use the brakes off it on a 69 road runner?.........




Why would you want a non-floating rigid caliper from a 69?

An F body. I believe you can use the spindles which are slightly taller than A/E slider calipers but people have done it with no issues tho I ain't sure exactly what is required.

1979 = B-body

1980 = J-body

J-body shared the transverse torsion bar suspension of the F and M bodies

Oh OK, noted!

but to answer your question you can use the brakes.
you would need the spindles, calipers and the caliper brackets. basically everything between the ball joints.
I would keep the bolts that hold the lower ball joint from the 69 over the ones from the 79 but take them just in case.

If you wanted to, theoretically you could also use the booster and master from the 79 if you don't have power already. and even if you do, it would be a dual diaphram master.
It might cause issues if you have column shift and cruise.

There used to a great brake swap article in the tech archives but it looks like somebody deleted it.

You can buy everything you need at Canadian Tire except the spindles, caliper brackets and brake lines.

The caliper brackets are different for small or large rotors and the calipers will depend on whether you get pin or slider brackets.

If you mount the calipers to the rear then you need '76 Cordoba calipers so the bleed hole and hose hole are in the right place.

You should buy your brake lines from Dr. Diff - he'll know exactly what you need.

I think Aspen/Volare spindles were the suggested ones.

THIS is the magazine article that you need to find and read:


Disc Brake Upgrade: DiscoTech-Mopar Action Aug 1999 Vol 10, Num 5

The knuckles and rotors and caliper adapters will work but you'll want to use calipers that match how you mount the knuckles. You can mount the calipers either to the front or to the rear of the spindle. How you mount the calipers will determine which caliper you need in order to get the hose routing correct.

Do you have a anti-sway bar on the car? If so you'll most likely need to mount the calipers to the rear.

I am not sure about this talk about mounting calipers and needing different calipers.

all you have to do is swap sides of the spindle to mount front or back.
then swap calipers to make them mount with the bleeder facing up.
or something like that as I recall.
I didn't have to get any new parts. started with m body but don't think that makes a difference.

I guess my. Ain't concern was knowing if the geometry of the 79 Córdoba spindles was the same as factory 69 b body disc spindles.

When It comes to a bodies, you can use aspen/volare spindles but they are slightly different and change the geometry and angles of the suspension...

Does anyone know for sure if the spindles are bang on here or??

The B3 uses a taller knuckle than the early B or B2 cars but it doesn't seem to matter. In fact, it might make the geometry better depending on which theory you subscribe to. If it really bugs you then buy the matching upper control arms from Firm Feel. They sell upper control arms that are designed to work with the taller late model knuckles.

I wrote an entire book on Mopar B body cars that included all of this information. Pick it up at Amazon for $20 or whatever they are asking for it these days.

https://www.amazon.com/B-Body-Performance-Upgrades-1962-79-Design/dp/1934709301

I run the taller knuckles on my 65 Had the As on and the talls seem to handle better.They swap right on.The brakes will work as the master should also.I run 70 C body manual disc master on the ones I do.Mine have been on at least 15 years and no problems.rocky

It's a shame the on line articles are not anymore available either. It was a good one!

Somebody posted the mag article's pics somewehere recently.... Maybe at FBBO ?

if anyone wants a copy of this, i can put it on a PDF and send to your e-mail. give me a day or so when you request.

K, so the rant about the F,M,J body spindles is that they will be 1/8" taller than the ones you are removing off the old car . . . . I have done this swap on my 70 Bbody . . . no issues with alignment or handling, etc . . . only issue was mounting the calipers to the rear, so had to use mid 80's calipers that have the bleeder screw on top, and then went with Dr. Diff's stainless steel braided brake lines . . . . I have 10k real world miles on the car now and no issues at all . . .

The 79 Cordoba pieces should bolt on and have no issues, however, you might need to mount the calipers on the rear - depends on your sway bar and whether you have the front or rear brake line location for the front wheels/brakes. The slider calipers for the rear would be mid 80's fifth ave, or so . . . check with Dr. Diff . . . he has it all dialed in !!