My valley was full of oil too. You think its your valve covers but for that much oil its not. You have 4 big bolts/plugs that hold down you spark plug valley cover. I took valley cover off and cleaned up the oil. I didn't even bother to put it back on. The bolts/plugs have aluminum crush...
Mine smoked from buildup over time. I fixed everything and had it all bead blasted. but you have a catch can so it shouldn't be getting any oil in the intake. I know when I had my old 77 chevy truck it smoked on start up and high throttle because of the valve stem seals.
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