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10-03-2024, 10:17 AM | #1 |
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Join Date: Sep 2016
Location: Robertville
Posts: 2
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68 gmc c15 upper control arm bracket
Hi, 1968 gmc c15 swb step side. Front end was striped down and painted. Drop spindles and front disc brake conversion. I fabricated some upper control arm brackets for the cross shaft. The oem was all rotted and I used all the same geometry as the old.
I up sized the stud from a 1/2'' to a 9/16'' (grade 8 unf) and all the hardware is 9/16'' grade 8 unf on the vertical and 1/2'' grade 8 unf on the subframe. The cross shaft fits but it is really nice and tight. I'm afraid my good work will limite the caster adjustment. Worst comes to worst, i'll cut out the 9/16'' stud and weld some 1/2'' or I could radius the cross shaft bores to get my movement (different shim stack thickness). I was also thinking about doing to bottom cross shaft mod (0.750'' to the front). What do you guys think about the bracket and my general idea for my alignment. Thank you! Nick. Pardon my english! Canadian frenchmen fron New Brunswick here. P.S. Sorry the pics are upside down. Trying to correct it. I trying fliping the pictures but nothing works. Sorry for your necks Last edited by 68gmcswb; 10-03-2024 at 10:55 AM. |
10-03-2024, 12:49 PM | #2 |
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Join Date: Mar 2022
Location: Surrey BC
Posts: 830
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Re: 68 gmc c15 upper control arm bracket
Depending on the welds that is probably strong enough but you might have trouble if it ever needs inspection?
These trucks like more caster, they did not come with much from factory back in the day when power steering was not so common. I have a spare crossmember but I think we are several days drive apart |
10-03-2024, 01:54 PM | #3 | |
Registered User
Join Date: Sep 2016
Location: Robertville
Posts: 2
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Re: 68 gmc c15 upper control arm bracket
Quote:
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