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I am in the process of fixing my 1975 c3 front cross member. I am in need of a way to position the lower a arm bracket in the correct position. I cant use the two holes in te front of the boxed area as they were ripped out prior and a new piece needed to be welded in. I have looked for a body repair guide to find dimintions. Can any one help me? Thanks
Last edited by Shawn2; Jun 25, 2020 at 09:42 PM.
Reason: Added year and pic
About all you can do is try to duplicate (mirror) that side onto the other.
Here's the only frame dimension chart I have a copy of, use the reference locations given on one side to locate the a-arm shaft on the other side (triangle type thing)
do a bunch of X.s. lf to rr and rf to lr. as many different points on those 2 control arm brackets as you can. if same measurement on all, i would think they are matching. go bigger too. diag measurements to the same spots on different sides like the trans crossmember, body mounts. NOT engine mount horns. they are offset. not front frame horns. you can't trust them not to be tweaked. measure the front horns to see if straight, but don't use them as datum for suspension mount points.
Last edited by derekderek; Jun 26, 2020 at 04:31 PM.
Lower A arm
