I have some questions on converting front drums to discs, I have some compoenents from the Right Stuff kit that I purchased from another vendor.

Where I have become hung up is the stock lower ball joint cannot be mounted to the upgraded spindle with the bolts that came with the spindle. The bolt diamter is too large to fit into the LBJ. So my question on this part of the project is: Is there a different lower balljoint that is needed for this conversion? If so what is the application? Myself and a local Mopar expert and lifelong suspension expert seem to think the lower balljoints were all the same for a long range of years for A bodies.

I'm in the process of doing the same thing but I'm using the bolts from the donor kit. But not exactly sure what your asking. Mine for the 69 Dart came from a 73 Duster. Perhaps a picture to see what you're doing?

way back (dont remember all the details) but I had a drum LCA that had holes for 1/2" bolts & for my disc app I drilled out the holes to fit the 9/16 bolts (the iron was soft & the bit went thru em like butter) cuz the two were the same exc for the bolt hole ID & there was plenty of meat in the boss(s) so integrity was not compromised. this might have been on an early A app. If any of this helps you.

Bolts that attach the spindle to lower ball joint are much too large a diameter to fit the stock lower ball joint. These bolts came with the kit/parts I purchased, I did not receive a new lower ball joint. So my assumption is the lower ball joint that works with this new spindle must be an upgrade or different than stock.

Neither an upgrade or non-stock.

You just have the wrong stock lower ball joint.

You have the small ones, you need the big ones.

Pic in the link

http://www.bigblockdart.com/techpages/linkage.shtml

Yes, you need the 73+ lower ball joints.

I found the one I need, AutoZone and Rock Auto carry them. I received either bad info or incomplete info from Right Stuff and other suppliers of these kits for disck conversion. The correct ones for this project are 5/8 instead of 9/16.

Thanks for the replies.

Its ok, were just waiting for the "why wont my car stop?" questions...

bwwhahahaha!!! I had this revelation last night.. I have brake woes myself. I bought a budget-build rear disc conversion for my '73 Cuda and what I got was a budget-build rear disc conversion. I am working through this thing with poor instructions and cheap parts, and half-answer help from the vendor telling myself, "it's gonna fit just fine". Then it occurred to me that it may not stop. I'm looking for a new direction or even going with drums.

^ more details please, the guys here can advise/fix anything.

The car didn't have rear brakes - I mean there were no brakes on it. So I ordered this kit and I find a disclaimer at the end of the instruction stating that if I don't consistently use the park brake, the calipers will not adjust. It seems these calipers are modeled after some 70's GM style. On top of that, the calipers wouldn't adjust out enough to allow the rotors to move so basically the brakes are locked up upon installation. I have messed with this longer than is reasonable. I am not new these type projects. I don't have confidence in the product so I'm sending them back if I can.

If I could find a good set of 10.5 or 11" 8 3/4 drums I may just go with that unless someone has another suggestion.

Here's a link on how to adjust those calipers you have

http://static.speedwaymotors.com/pdf/910-31919.pdf

thank you - this is helpful and far better than what is enclosed in the kit. With the piston at full compression (done with c-clamp) I do not have enough play for the rotor to spin. I cannot imagine this being a proper static setting for a disc brake.

You have to screw them in, not use a C clamp

A video showing how, kinda long.

https://www.youtube.com/watch?v=opjdu8DdVeA

Yes, I screwed them in until there was no more movement then I went with the clamp thinking maybe it needed to be pushed back off the first detent in the ratchet. I don't know. Maybe I will take another look at it but it seems like it should be easier.

This video was what I needed to see! Apparently, I need to clock the piston around to be able adjust the throw on the e-brake lever!

Thank you ! I can stop cussing now

You are welcome, the aftermarket, for the most part and IMO, sux when it comes to quality instructions.

Exactly. I am thankful for a resource like Moparts that I can come to in my times of crisis.

OK my next question is when the conversion is done, and I will have large bolt pattern obviously, is there a particular backspacing needed when using steel wheels?

I want to keep the steel wheel look, hoping to get 15*6 for fronts, do the disc brakes now change anything regarding backspacing?

I have a 65 Cuda I converted to discs up front using stock parts. I am running stock 15x7" cop car rims. Though to be honest I could pull the rims in more (increase backspacing) and have room for more tire.

The stock stuff increases the track about 3/4", I have no idea how much the Right Stuff kit might change the track.