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Old 05-07-2013, 11:48 AM
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Ball joint size 1958 - 1964 Pontiac

Does anyone happen to know the lower ball joint size for a 1958 through 1964 Pontiac?
Thanks

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Old 05-07-2013, 10:18 PM
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We talking nut hex size, thread size, stud length, bolt pattern, or ?
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Old 05-08-2013, 08:34 AM
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I was looking for the thread size where the castle nut attaches which I've been told is referred to as the size of the ball joint.
Called around last night and sales clerk at Oreilly's Auto found this spec as 9/16.
9/16 ball joint is a little small for my build and I would rather have a 5/8 so my my next task is to determine if there is a ball joint available with the same configuration as the 58 pontiac lower, but with 5/8" threads at castle nut.
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Old 05-08-2013, 05:56 PM
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Is this a heavy truck or racing/offroad?
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Old 05-09-2013, 08:26 AM
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My project is a 1937 Buick Roadmaster. Will weigh approx 4000 lbs and will be a daily driver. Current desgn I'm working on is to use spindles/brakes from 95 Buick which was similar weight combined with 58 Pontiac control arms. Had read that late in 95 & 96 Caprice Police vehicles went to larger (5/8") ball joints so I'm trying to do same. Ball joints evidently were high failure item per this impala forum FRONT Suspension Upgrades
Rare Parts says they do no have a 5/8 ball joint that matches the 58 Pontiac lower control arm and recommends I drill & tap the spindles & have sleeves machined to match this tapped hole with the 58 pontiac taper on the inside.
Another option I'm exploring is finding a diffrent bolt on 5/8 ball joint and modifying the bolt pattern on the 58 lower control arm to match it.
Thanks for your help
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Old 05-09-2013, 09:17 AM
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Quote:
Originally Posted by Mutt's37Buick View Post
Does anyone happen to know the lower ball joint size for a 1958 through 1964 Pontiac?
Thanks
Could you please specify which model(s) of Pontiac / Buicks you are referring to?

I've had a look in both NAPA and Moog online catalogs, and they don't seem to list any ball joints for 58-64 Strato Chief.

When I got to the 95 Buicks ...
NAPA e-Rack Suspension Catalog (95 and prior)

Roadmaster 260-1130
LeSabre 260-1317

I didn't bother to check the specs until I know what I'm looking for.
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Old 05-09-2013, 05:12 PM
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Thanks for your help.
I have been told by junk yards that control arms are the same for all 58 Pontiacs.
1) Can anyone validate that all the control arms are interchageable between all models of 58 Pontiacs?
2) I do know that the lower ball joints are the same from model to model. Found parts at Kanter (02929J 10201) and Rare Parts (10155) sold at Napa and other standard auto supply shops. For reference you could use a 58 Pontiac Bonneville.
Unfortunately these are special order parts so at most supply houses so I can't just go in and measure them.
Thanks again for looking.
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Old 05-10-2013, 11:34 AM
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Quote:
Originally Posted by Mutt's37Buick View Post
Thanks for your help.
I have been told by junk yards that control arms are the same for all 58 Pontiacs.
1) Can anyone validate that all the control arms are interchageable between all models of 58 Pontiacs?
2) I do know that the lower ball joints are the same from model to model. Found parts at Kanter (02929J 10201) and Rare Parts (10155) sold at Napa and other standard auto supply shops. For reference you could use a 58 Pontiac Bonneville.
Unfortunately these are special order parts so at most supply houses so I can't just go in and measure them.
Thanks again for looking.
Hmmm ...
I went to Kanter's and looked up the part# that you've supplied.


The Rare Parts # was a bolt-on LBJ #10155,



but I cannot either cross-reference or look it up by application ... does not appear to be available thru NAPA Chassis, Moog, Rock Auto, Summit, Jegs ... nowhere!
Without availabilty, I'm feeling like I've hit the wall.

Perhaps a call to Rare Parts might be the answer?
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Old 05-10-2013, 12:16 PM
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This is kind of an edit to my last post, as I had "timed out" on editing.

I looked in the current parts catalog, and they do not have a progressive size chart or even dimensional information on ball joints ... only tie-rod ends and king-pins. I did find, at Coleman Racing different ball joint housings as well as various lengths (not diameter, though) of ball studs.

Perhaps a call to Rare Parts might be the answer to dimensions?
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Questions? Call us: 800-621-2005
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