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Dog bone rears suspension question

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Old Jun 3, 2025 | 12:39 PM
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Default Dog bone rears suspension question

I am rebushing a C4 suspension for my C2 restomod....... I keep hearing conflicting info about the rear dog bones......
Is there an up or down and front and back to these... Obviously one is longer than the other so a no brainer here.... I see the larger bolts in one side but it looks to me like the bushing is smaller to accept the larger diameter metal sleeve..
Any thoughts here please..... Thanks
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Old Jun 3, 2025 | 12:48 PM
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Originally Posted by Limp
I am rebushing a C4 suspension for my C2 restomod....... I keep hearing conflicting info about the rear dog bones......
Is there an up or down and front and back to these... Obviously one is longer than the other so a no brainer here.... I see the larger bolts in one side but it looks to me like the bushing is smaller to accept the larger diameter metal sleeve..
Any thoughts here please..... Thanks
Were they purchased with a complete rear drive? If so what year and does it have rear shoe in rotor or caliper parkin e-brake? That might be enough to ID what you have. Might?
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Old Jun 3, 2025 | 02:26 PM
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Originally Posted by WVZR-1
Were they purchased with a complete rear drive? If so what year and does it have rear shoe in rotor or caliper parkin e-brake? That might be enough to ID what you have. Might?
Its an 85 car I purchased complete as a parts car.....
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Old Jun 3, 2025 | 03:35 PM
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There should be numbers cast on the arms. If original upper might be cast 14048930 and lower 14048931.

*** Smaller diameter end of rod to the front bracket and I believe M12 hardware, larger diameter to the spindles and M16 hardware?

Last edited by WVZR-1; Jun 3, 2025 at 04:02 PM.
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Old Jun 4, 2025 | 08:22 AM
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Originally Posted by WVZR-1
There should be numbers cast on the arms. If original upper might be cast 14048930 and lower 14048931.

*** Smaller diameter end of rod to the front bracket and I believe M12 hardware, larger diameter to the spindles and M16 hardware?
I guess thats my question. both ends seem to be the same diameter..... I guess I need to put my calipers on it...
My question comes from watching a you tuber mark each end and the UP side of each dog bone... Wondering why as I can't see any difference
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Old Jun 4, 2025 | 08:31 AM
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Originally Posted by Limp
I guess thats my question. both ends seem to be the same diameter..... I guess I need to put my calipers on it...
My question comes from watching a you tuber mark each end and the UP side of each dog bone... Wondering why as I can't see any difference
I checked SPO diagrams last evening, also a rear suspension spindle and arms that I have still assembled and there's certainly a difference in the fore & aft hardware. Do you still have the hardware you removed? Calipers? You can see M12 vs M16?
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