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Re: 83 c20 upper and lower control arms on 68 c20
Quote:
Originally Posted by SkidmoreGarage
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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They are very similar. The C10's have a couple of bolt holes on the vertical surface of the frame that requiring 'ovaling' the holes for the hardware. The 73-87 C10 frame is also a little taller where the x-member is located which can impact which motor mount towers/stanchions are needed. It's possible these differences will also be the same for C20's
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.
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