NEED Help drum to disk conversion

[sublimeswinger]

I found some 73 disc brake set up. I have a /6 drum and would like to upgrade. Can i use the control arms from the drums. I need your guy's help please.

 

[ValiantMike]

I switched from drums to disc on my 1964 Valiant. I took disc setup from a 1975 Duster. I had to use the upper control arm from the 1975 Duster, but retained the lower control arm from the 1964 Valiant. This I beleive, is because of the different size balljoint for the disc spindle on the upper control arm. Mike

 

[MoparBrit]

Just sent you a PM on it.

A '73 is large ball joint upper control arm. 1972 back used the same smaller ball joint on both drum and disc.

Cheers

 

[sublimeswinger]

ok so i misunderstood. they are 71 and they will go on a 72, this will work right? with my 72 / controls?

 

[C130 Chief]

If the spindles and rotors you are swapping on are from a 71 (small bolt pattern, K-H 4-piston) then your existing control arms and upper ball joints will work. If you had 9" drums, you will need the appropriate disk lower ball joint.