Alrighty, I've been searching for about an hour now after messing with it for longer than I'd care to admit.

Here's the skinny: The truck is an '82, got a brand new 22R, rebuilt stock Aisin carburetor, all the fixings that go with a swap...

Let me rephrase the OP. The truck starts fine and idles like a champ on a cold start. After the initial problem I experienced with it not wanting to idle and trying to trace everything down, I went inside and ate dinner, returned a wonky timing light to a friend (driving the daily beater-not the truck) and came back home. Couldn't leave it alone and went to start it again- starts like a champ. Idles rock steady at 1000 rpm. I'm getting ready to go to bed, but this afternoon the problem seems to be when the truck is warmed up to OT.

It seems after it gets warmed up it doesn't want to idle. Won't start without me giving it a little gas and won't idle if I take my foot off the gas. But during the process of warming up it idles rock steady at 900-1000 RPM. I have to get a real timing light in the morning and get it dead on, but could the timing affect the idle after it's been warmed up? Right now I have the vacuum advance off of the distributor for when I set the timing.

Ideas?

 

I'm thinking fuel cut solenoid, as my after sleep guess. I'm going to grab a timing light and when I get back I'll test it!

 

Got me. Deus ex machina. Solenoid tested fine, couldn't get it to repeat the symptom.

So I drove it 4 hours to Charlotte, grinning ear to ear.