1973 and up disc brake swap

[jysnflem]

I've been on the look out for a parts car with disc brake set up from a 1973 or newer A-body. I curious could you get front drum brakes on a 1973 or newer A-body and if so are the upper control arms with the larger ball joint like the disc brake upper arms. Jayson

 

[dusted72]

I may be wrong but I believe only disc brake cars had the big ball joint on top.

 

[Wolfy2U]

Don't believe your wrong. The uppers had the larger ball joint with the disk brake set-up. I had a 73 with drums, had to switch out the upper to use the disc set up.

 

[jysnflem]

Thank you gentlemen. Jayson

 

[MadScientistMat]

All '73-up upper control arms are the same, so don't overlook the drum brake ones. You can keep the stock lower control arms but need to swap ball joints.

 

[Revhendo]

OK. I'll chip in on this one. From my experience, 73 on up A-bodies with disc brakes or 10" drum brakes had the big ball joint upper arms. 9" drum cars still had the small ball joint arms. I am just going from what I have seen. Perhaps one of the numbers junkies can throw out a chart or something.....

 

[R72Demon]

All 73-76 A-body Upper control arms have the bigger ball joints, doesn't matter if the car had drums or disc.