Fuel Pressure is 13 Psi constant even at load, fuel filter is brand new and strainer and pump and regulator and all lines.
I think the smoke was just some carbon on the valves not seating them fully, all smoke is completely gone now at flushing motor with steam clean. No catalyst.
Spark plugs are new, wires are new, knlck sensor is new, distributor is new, rotor is new, cap is new, pcv was new then replaced with cleaned factory, egr is new, the heated intake thermac didnt work right so i strung it open, no catalyst, o2 new, base timing is 0, advance is good at idle in park, air filter is brand new. I only use name brand gas, ran plenty of injector cleaner for a while in a ethanol treatment I used for a while, nice cone on injectors too. Yes knock sensor is for 350 with auto. Ac Delco. Knocks are somine resolved, they go up to like 3-5 on start then seem to stay there sometimes gain a couple while driving around.
I have replaced everything completely, Ignition and Fuel which is why Im so stumped. the only thing left is the injectors and connectors, which the injectors have a good cone so I doubt, but the connectors seem loose. Either that or something is causing timing to retard somehow.