1937-1957 Buick Oldsmobile Pontiac suspension upgrade
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With some research we figured this would work on all 37-57 BOP’s cause they all had the same basic set up. What we learned was, the 58 Pontiac Lower Control arms are the key. They are a direct bolt in, exactly the same as the originals, but with ball joints instead of king pins. 59 and later BOP’s went to a completely different control arm mount. 58 Buick lowers are not symmetrical, so they won’t work. (waiting for someone to confirm that 37-57 Buicks are the same as BOP’s, right now it is unconfirmed) | With some research we figured this would work on all 37-57 BOP’s cause they all had the same basic set up. What we learned was, the 58 Pontiac Lower Control arms are the key. They are a direct bolt in, exactly the same as the originals, but with ball joints instead of king pins. 59 and later BOP’s went to a completely different control arm mount. 58 Buick lowers are not symmetrical, so they won’t work. (waiting for someone to confirm that 37-57 Buicks are the same as BOP’s, right now it is unconfirmed) | ||
| − | + | Also we do not have a 58 Olds to check those lower control arms. What we do know is 57 is king pins, and 59 is all new. So 58 is it. We used the 58 Pontiac upper control arms simply because we got the whole front end. Make a note that several uppers will work. Looks like 58 to 60 BOP’s all had the same basic dimensions on their upper control arms. In fact, the 58 Buick uppers we used on one conversion had some built in twist that allowed us to add more anti dive than we could get with the Pontiac uppers. | |
As you can see in the pics, the 58 control arms are more substantial than the 41. But all dimensions are the same. | As you can see in the pics, the 58 control arms are more substantial than the 41. But all dimensions are the same. | ||
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