[Two_70_Converts]

My son decided to get his Mom out of the house for a "fun" short drive. It didn't end well. Tire was sliced open, tie rod bent, shock blew out and of course the obvious. Luckily one of the rare times he wasn't going fast and on a back road. Never had one break at the ball joint before.

[Bluesugar]

WOW!!...I have never seen that....I am now going to inspect all my cars in AND around that area!

[Chief of the 60's]

Brake hose is junk too. From the bottom photo, it doesn't appear as though there was a crack starting. Would need to see the broken metal from a different camera angle.

[Ben M.]

That's strange, never seen it like that. Maybe someone jacked it up there in the past and caused a crack to form? Or an oversize ball joint pressed in that stressed the area?

[gtohunter]

Did this not just happen to someone else very recently, pulling out of his garage, or something like that? I remember seeing pics of the same broken control arm...?

Found it...https://forums.maxperformanceinc.com...d.php?t=838970

[Simple Man]

Good thing no one was hurt.

[Will]

WOW! That could've been a lot worse. Never seen that happen before.

Had a wheel bearing seize on the freeway in my buddy's Chevy pickup once. That was seriously scary, but at least the wheel stayed pointed in more or less the right direction...

[72projectbird]

2nd case this year so far on this forum.

At least the damage looks minimal considering such a massive failure.

[gtohunter]

Happened to my son driving a Monte Carlo, while he was coming down an on ramp to the Interstate at about 50mph ! Not much you can do but hang on hope you don't hit anyone.
Flat bedded home and fixed the damage.

[dataway]

I'd be very curious to know if those are reproduction arms .. I notice where the paint is missing I see relatively clean smooth metal underneath .. that would be very rare on original OEM arms.
Something about the shape of the arm in the second picture doesn't look quite OEM to me, too straight on the back edge.

[OG68]

While not common, its not unusual. The Chevelle forums have numerous threads regarding cracked or broken factory lower arms. It usually occurs at low speed or backing out of the driveway.

I had mine inspected and refurbished by Glen Lever.

https://www.lever-family-racing.com/

[dataway]

I witnessed one break on a 1960 Caddy Coupe Deville pulling into a driveway ... like an explosion.

[einstein]

Makes me wonder if the stress is from the hard stop contact pad being pressured by the tab on the steering arm? If drivers have a habit of turning hard into the limits of the power steering it could possibly cause that stress.

Quite notable though is the lack of rust in the fracture, suggesting the entire fracture is fresh.

[A Schab]

I haven’t had a control arm break but I have had the lower ball joint stud pull through the housing on a 79 T/A.

[misterp266]

Wouldn’t the heating of the control arm with a torch when replacing the pressed in ball joint affect the integrity of the control arm at that point? Perhaps it was “overheated” at some point.

[Half-Inch Stud]

Fender Paint all good?
Rim good?

[SR-71]

I wonder why anyone would beat the control with a torch?!?! No reason to do that. Take them to a machine shop and have them pressed out and new ones pressed back in.

[misterp266]

Originally Posted by SR-71

I wonder why anyone would beat the control with a torch?!?! No reason to do that. Take them to a machine shop and have them pressed out and new ones pressed back in.

Not everyone does things the right way. Just a thought. . . .

[necdb3]

A ball joint press is not expensive. A small price to pay to do it right.

[SR-71]

Tough lesson to learn by not doing it the right way. Loosing your GTO or life to save a couple bucks is a bad idea.