help-popping up through carb-seems to be dist/cap/rotor issue???

To all that helped and future searches- it was the timing chain. I had about 1/2" play on it. The cam "looked" good. Didn't mic the cam. There was only a few more steps involved- so I changed the cam also- put a stock cam in it for now. No popping at all now and timing chain is nice and tight, bought a stock timing chain and sprocket set for undewr $40 from advance auto. All runs great now.