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#1
03-06-2022, 11:45 AM
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Boxed Control Arms
Has anyone boxed in the upper rear control arms for strength or not a good idea. I was thinking of boxing in my lowers and uppers on my 67 GTO. I see in the book
"Pontiac GTO Restoration Guide" they mention a different upper control arm part number(9788993) for the lower HD rear axle gear ratios. |
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#2
03-06-2022, 01:53 PM
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They are under tension - not much need to box them.
Roto-joints may be a better thing there. |
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#3
03-07-2022, 01:26 AM
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The arms are boxed to reduce twisting. Boxing the arms, creating a rectangular CSA, does next to nothing except make you feel good. To resist twisting, the CSA should be round.
The upper arms are too short to make a difference that you could feel. |
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