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Ball Joints

Posted By: BlueRacer69

Ball Joints - 09/25/23 01:50 PM

Hello. Is there a difference between upper and lower ball joints between disk brake cars and cars with drum brakes? I'm talking a 1969 car. Thanks.
Posted By: 6PakBee

Re: Ball Joints - 09/25/23 01:52 PM

A-body, B-body, C-body?
Posted By: BlueRacer69

Re: Ball Joints - 09/25/23 02:00 PM

Originally Posted by 6PakBee
A-body, B-body, C-body?
Sorry, it's a 69 A-body, with 10 inch drum brakes.
Posted By: TJP

Re: Ball Joints - 09/25/23 04:39 PM

I know the lowers are different, Uppers I believe are the same. use Rock Auto to look up the part # / application wink
Posted By: JohnRR

Re: Ball Joints - 09/25/23 05:09 PM

Originally Posted by BlueRacer69
Hello. Is there a difference between upper and lower ball joints between disk brake cars and cars with drum brakes? I'm talking a 1969 car. Thanks.


Uppers are the same , lower is different.
Posted By: Jim_Lusk

Re: Ball Joints - 09/26/23 11:32 PM

Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.
Posted By: JohnRR

Re: Ball Joints - 09/27/23 02:30 PM

Originally Posted by Jim_Lusk
Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.


Good to know , thanks Jim.

Also good point , if switching to the 73 up large bolt pattern discs the lower is also a different part .
Posted By: BlueRacer69

Re: Ball Joints - 09/27/23 08:21 PM

Originally Posted by Jim_Lusk
Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.
No disc, it's a 10 inch drum brake car.
Posted By: poorboy

Re: Ball Joints - 09/28/23 01:02 AM

Originally Posted by BlueRacer69
Originally Posted by Jim_Lusk
Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.
No disc, it's a 10 inch drum brake car.


If you plan on installing disc brakes, you will need the lower disc brake ball joints. When I installed the 73 Duster disc brakes on an older A body I used the 73 lower ball joints and the disc brake spindle. But that was a LONG time ago.
Posted By: JohnRR

Re: Ball Joints - 09/28/23 12:12 PM

Originally Posted by BlueRacer69
Originally Posted by Jim_Lusk
Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.
No disc, it's a 10 inch drum brake car.


Are you switching to discs ?
Posted By: Cab_Burge

Re: Ball Joints - 09/28/23 06:05 PM

Originally Posted by poorboy
[quote=BlueRacer69][quote=Jim_Lusk]. When I installed the 73 Duster disc brakes on an older A body I used the 73 lower ball joints and the disc brake spindle. But that was a LONG time ago.

Switching to the 1973 and later front disc brake set up gets you the 4.5 inch wheel bolt pattern also up scope

I did that on my last street and strip 1971 Duster up I also swap the passenger side to the driver side and vice a versus so the heavy brake caliper were mounted behind the spindles hoping to get a little more weight moved towards the back instead of hanging on the front sides of the front spindles work scope
Posted By: BlueRacer69

Re: Ball Joints - 09/29/23 01:26 AM

Originally Posted by JohnRR
Originally Posted by BlueRacer69
Originally Posted by Jim_Lusk
Upper is the same. Lower is the same casting with 9/16" bolt holes instead of 1/2". All you need to do is drill the holes out.

That is assuming you are using the '69 ('65-72) Kelsey-Hayes disc brakes.
No disc, it's a 10 inch drum brake car.


Are you switching to discs ? NO, I'm not switching to discs. This car will remain a 10" drum brake car.
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