is there a difference?

[racyroy1]

Hello,

Is there a difference between disc brake UCA's and drum UCA's?

I bought a disc brake coversion off of a 74 valiant, it came with upper control arms. in one control arm i can get the new ball joint in, in the other i can't, i'm assuming that maybe the one is damaged and the ball joint won't fit. I have a set of UCA's that came off of a non disc brake 72 scamp. Can I use the non disc brake UCA with the disc brakes as long as i use the bigger ball joint or will the disc brake ball joint not fit the drum UCA.

Thank you for clearing up my dilema

kevin

 

[VDART]

73 is the cut -off year-- 73- up is the larger ball joint -- while 72- down is the smaller one.
so no you cannot mix'match that. you need the larger ball joint to go with the 73-up disc brake stuff.

double check your 74 arm-- post up some pictures & you will gets lot's of assistance ,Lawrence

 

[racyroy1]

but the uca's are the same just not the ball joint, which is obvious or is the hole to small also. I'll post some pics tomorrow, to late tonight.

 

[70DartMike]

The control arms are the same, except the 73+ uses a larger ball joint where the 72- uses a smaller ball joint.

 

[racyroy1]

The control arms are the same, except the 73+ uses a larger ball joint where the 72- uses a smaller ball joint.

THAT! my dear sir is the answer to my poorly asked question, thank you

 

[Oklacarcollecto]

The control arms are the same, except the 73+ uses a larger ball joint where the 72- uses a smaller ball joint.

and the 72 back ball joint has a smaller tapered shaft so it is too small for the 73+ spindle.

 

[Jim Lusk]

No, the control arms are NOT the same. The hole for the ball joint is a different size. They are otherwise physically the same.