Quote:
Originally Posted by crazy longhorn
Good idea Scoti......I will check that route out. I guess it is a matter of , the cost of parts vs the machine work? All the parts on my truck are fresh(within 6000 miles). Let us go  a number& kick back  longhorn |
I don't recall the upsizing of the mounting hardware to be significant if @ all.
Having limited access to early C20's/30's (pre-73), I have been told they utilized 9/16" upper mounting studs but never had one to validate the info personally.
Most later disc brake 1/2 tons utilize 1/2" upper studs. HD trucks were 9/16".
Early pre-disc brake lower control arm U-bolts were 1/2". Post-72 disc brake are 9/16".
I just put calipers on the old/original upper shafts from my 64 as well as a pair of uppers I got from one of N2billets 67-70 builds. These are original shafts & they allow a 9/16" bolt to pass through. The old/original x-member from my 64 has 1/2" upper mounting studs. The post-72 pancaked x-member I have has 1/2" upper mounting studs.
The early shaft diameters are 15/16" & flat where the bolts pass through (no Concave shape). The later shaft I have is 7/8" @ the shaft & ~1" where the stud passes through (w/the Concave notch).
Point of all this is it's quite probable the C10 shafts fit what you have w/o drilling anything. I would check the dimensions for what you have & compare. There might be no gain or @ the minimum a possible 1/8" gain if one side is flat.