I checked the timing on my '83 22R tonight. The distributor is fully retarded as much as it will move in that direction and the timing is still be too advanced. I can move it the other direction and it advances quite a bit. I'm guessing that the distributor might be off a tooth or two and may need to be removed and reinstalled in the correct place in order to retard it enough. I'll have to check it again to get the exact reading but it's not close to 0 or 5.

The truck drives fine but if I fail my emissions a second time I'm going to want to set the timing to factory specs.

Thoughts?