71 upper control arms and disc brakes

[nearpar]

I am going to convert from drum brakes to disc brakes on a 71 Dart.
This would be all factory components, my questions is are the upper control arms the same for both disc and drum?

 

[hemi71x]

If your going to big bolt pattern 4 1/2 inch, then you need 73-76, A body, upper control arms.

 

[nearpar]

If your going to big bolt pattern 4 1/2 inch, then you need 73-76, A body, upper control arms.

Thank you

 

[mopowers]

Or you could just use these and keep your upper control arms.

Mopar A-Body Upper Ball Joint Tapered Adapter

 

[nearpar]

Or you could just use these and keep your upper control arms.

Mopar A-Body Upper Ball Joint Tapered Adapter

Thank you did not know that these existed..

 

[BillGrissom]

Same UCA if you use 1964-72 disk brakes (4 piston Kelsey-Hayes), but those parts are as rare as hen's teeth today, especially the spindles. You can keep your existing spindles and UCA's if you use Scarebird's kit, which is the least expensive approach. It adds a plate to your spindle to attach parts from more common cars (Chevy & Toyota, I recall). Those calipers & rotors will likely be available for decades. Downside is you need to drill new holes in the rotors, and in every one in the future, to fit your 5 x 4" pattern. If you go to 1973+ parts, you will also need new wheels, and rear too if you don't want to carry 2 spares (or drive commando).