OK, here are directions for disassembly, assembly, and a diagram of an 85 el camino tilt column. The All Data program at my shop won't go older than 85 for steering columns in the chevy section. I suspect that they are very similar if not the same. I hope this helps you out. The diagram isn't...
This is the correct and preferred method for performing this repair for a very common problem. This will also work on many GM Tilt Steering columns.
Our example car is my own 1987 El Camino SS, your steering wheel may vary is style, but the method remains true. Tools needed are:
These are the stamped axle codes and gear ratios for the rear ends that were supplied with the 78-87 5th generation El Camino.
2AV - 3.08 open
2BV - 3.08 posi
2AX - 2.73 open
2BX - 2.73 posi
2AY - 2.56 open
2BY - 2.56 posi
2AZ - 2.41 open
2BZ - 2.41 posi