DRTDEVL
Mothfukle
Mine are cast upper and lower. Thought I was going to explode the press getting the lowers out.
Uppers I just chiseled the head off the rivet and drove them out with a punch in 10 minutes.
The uppers are simple as hell. Chisel them off, drive out with a punch.
The lower arms are cast and double-layered at the end. The ball joint slips in-between the upper and lower side of the arm. then they are riveted. I have already chiseled the heads off the tops, chiseled the heads off the first two bottoms, drilled one out in 3 stages... and it still won't come out. No matter how hard I beat the shit out of it with a punch, they won't budge.
A quick look shows nobody makes a new lower control arm for a 94 K3500 (I can find the C3500, though), so I can't use that as an easy way out, either.
The chuck on my drill is now jammed, too, so I have to replace that before I can continue... looks like it's not going anywhere until next week (I work tomorrow through Sunday for sure, then up in the air beyond that).