Please help me diagnose this 273

The PO jacked up the kickdown linkage when he did the manifold/carb swap, so no, I haven’t driven it much. I did drive it around the block very slowly to make sure it wouldn’t die. I have a Bouschillon kickdown setup I’ll be installing in the next couple days and then I should be driving.
Any thoughts on the spark plug oiling?

It is probably intake valve seals. They are probably long gone. Get some Viton positive seals like Mopar Performance or Fel-Pro. Get everything up to par, change oil to Valvoline racing 20w50 and a good filter and see if the oil consumption goes way down.