83 c20 upper and lower control arms on 68 c20
Can i swap the upper and lower control arms on my 68 c20 with new 83 c20 control arms?
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Re: 83 c20 upper and lower control arms on 68 c20
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I've never messed w/an earlier C20; only 73-87 & later models. But, I have done enough 67-72's & 73-87 C10's to know things changed for the 73 models: *The bushings on the 73-87 C20-C30 are still the same HD set-up like the earlier trucks. *BJ's will be different between drum & disc set-ups. *The later model arms will physically swap over but will require the rest of the package to be updated as well. |
Re: 83 c20 upper and lower control arms on 68 c20
I had a complete swap from a 1973-1987 c20 in my 67 c20. I didn't do it myself, but I did have to remove it all.
From what I have learned re-engineering it: The upper and lower control arms will bolt up but you will need larger lower u-bolts (9/16) You will need later model spindles, which then will mean ball joints/brakes/wheel bearings/etc. I think you also need the correct tie rod ends for the later model spindles. |
Re: 83 c20 upper and lower control arms on 68 c20
I have never swapped crossmember between generations, but if your wanting to swap the arms. With all the differences there maybe or could be.
Is he not better off to swap the crossmember too at this point? |
Re: 83 c20 upper and lower control arms on 68 c20
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Re: 83 c20 upper and lower control arms on 68 c20
My 67 c20 to later c20 setup used the stock cross member. I don't see why you would need to change it. I think that all the mounting points are the same.
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Re: 83 c20 upper and lower control arms on 68 c20
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The main differences are usually the upper a-arm shaft mounting hardware & lower a-arm u-bolts being different sizes. The hardware sizes increased when the disc brakes were introduced on the later model trucks. The upper a-arm shaft mounting studs are also larger for C20's vs C10's. |
Re: 83 c20 upper and lower control arms on 68 c20
Ok thanks for the input. The sizing all looks the same
So far Putting the arms next to each other (i have the front clip off). I plan on swapping the arms and using my original Drums for now and later doing discs. The ball joints look the same size. Should this work? |
Re: 83 c20 upper and lower control arms on 68 c20
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Re: 83 c20 upper and lower control arms on 68 c20
Had a chance to to get this done today and the a arms matched up
Great. Everything fits nice. I added new springs and shocks. Getting the Otherside done tomorrow. |
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