I wonder if the OEM/TRW/Moog arms are forged rather than cast. I’m just speculating but are the ACDelcos are noticeably beefier in size than them, like their UCAs? Perhaps it’s possible they simply use a thicker casting to compensate for inferior metallurgy. :zdunno:That arm seems like it cracked in a way that cast iron does. Is that what it's made of?
Kind of concerning seeing that. I'm still running the OEM lower arms in both my cars. I'm one of the few that prefers to squeeze new lower ball joints in, instead of replacing the entire arm. I find it easier to do that way and you can still get the OEM TRW ball joints at rockauto for almost nothing.
My Tbird has taken some pretty hard hits, since I also run it through the Winter, never had that happen thank God.
I was wondering that same thing. If that is true, it would probably hold true for the upper control arms as well. I specifically bought larger upper arms, NOS Dorman brand, harder to find... I did because of the larger size which I assumed meant they would be stronger. Maybe that isn't the case....Perhaps it’s possible they simply use a thicker casting to compensate for inferior metallurgy. :zdunno:
Last time I looked, connecting rods were mainly end thrust one end, rotational the other; not cross like that was. And plenty of connecting rods have become 2 piece or more designs during failure ...No different than bending a connecting rod
Yes i did look into it. I ordered both sides off Rock Auto. They dont warranty parts but Acdelco does. Im going to try to get credit towards a different part. I already fixed my bird with a Moog and honestly dont want to put another Acdelco suspension part on my car.You should be able to get a replacement for that through either the reseller or the manufacturer. That's WAY not typical, and the photo of the break clearly shows it was a manufacturing flaw which caused it to fail there.