C20 8lug to C10 5lug!

[SCOTI]

Originally Posted by bdiamond

I believe the upper arms are different. The heavier truck has bigger studs sticking out of the side of the frame where the shims go. You may can just use the heavy arm with the 1/2 ton balljoint, but I have no firsthand experience swapping them.


Just a thought: You might be able to press the A-arm studs out and swap them.

Correct.

The upper studs are larger so the shafts are different.
The C20 upper arms have the HD type bushings which are different vs C10's after 72.
1/2 ton BJ's will swap right over to the C20 arms.
Lower arms are different (larger OD ball joint) & again the HD bushings.