Terrible idle, difficult start, and smoke!

[C1ph3r]

Hey guys. so the other day i pulled my truck just out of the garage to get some usable space in there, and turned it off.

When I was done, backed it into the garage.

All said, the truck ran for less than a minute each time and moved all of 20 feet round trip.

I know, not the best thing for an engine but its all that was needed.

WELLLL, I went to drive it the next day and it would not start. It kicked once but then nothing. Turned the key, held it on nothing. just turned and turned via the started. So i give it a little throttle and it half ass fired up ran for a couple seconds very poorly and shut off.

So me being a bozo, gave it lots of gas got it to actually idle under its own power and pulled it out of the garage so as to not totally fill the garage and house up with fumes and smoke.

Well, there is the problem. He will not run very well and smoked like a freight train. Sounds/feels like it isnt firing on all 8.

To be honest, i couldn't tell if the smoke was white or gray. but yowza. it was bad. It didn't have a sweet smell like I have heard coolant in the engine would have. But I was in such a frantic state of mind (was in a big hurry to get somewhere then this happened) that I cant recall exactly what it smelled like. My truck runs pretty rich anyway but doesnt smoke. At all until this point.

Specs:
70 C10 350 TH350
HEI distributor
original motor except that HEI part and an open air cleaner
Heartthrob true duels

could i have just very badly flooded it and it is running super rich? Could i have coolant in the oil now for some odd ball reason? Or tranny fluid coming in from that modulator?

seems that if the day before all was well, i am really hoping its just flooded. But wish in one hand crap in the other and see which one fills up first right.

what would be the first thing to take a look at?