Ever since the first time I tried to do a "performance" alignment on my car, I ran into an issue getting all of the negative camber I wanted because my upper control arm bolts weren't long enough. Yesterday I remedied that situation.
Here's what the passenger side looked like with 0.6 degrees of negative camber...
See the back bolt there has no threads sticking out of the nut...we even took the washer out between the nut and the control arm to get every last bit we could out of it.
I took the control arm loose and used a C-clamp to press the bolt out of the frame. Here is the factory bolt and it's new replacement side by side. The new bolt is a class 10.9 12mm x 1.75 70mm long, about 15mm longer than the stock bolt.
The rest of the parts for the day
I had the inner fenders out because of my body bushing swap project so I figured it was the easiest time to do this as well but I'm not ready to do a new alignment at the time, so my plan was to just put shims back in place to set the alignment back where it was for now.
I put the bolts in the frame and then ran nuts down and snugged the bolts up tight. I ordered bolts fully threaded because I wanted to be able to use nuts to hold the bolts in place. I then put a couple of washers on the bolts and a shim or two to get the thickness that matched the stack of shims I took out.
It took some finagling to get everything in place as I had to hold the UCA in place (still attached to the spindle), run the bolts in, start the nuts and run them down as they drew the bolts through the cross bar. The cross bar would not go over the bolts once they there bolted to the frame first due to the headers.
Lots of thread available now for any adjustment I might need...
Snugged up tight
Before I put the inner fenders back in, I went ahead and did the driver side as well. I've never ran out of threads on this side, but figured just in case...might as well do it now.
On the back bolt, there weren't enough shims to make up the thickness of the nut so I left it out. When it comes time to align it like it needs to be, if there is room then for a nut I'll put one in.