Oil puddeling on intake manifold .Factory 273 4bbl duel exhaust

As others have suggested, it's quite likely the intake bolts are wicking up the oil. Try some thread sealant on them and that will likely solve the problem. I used thread sealant on all the intake bolts when I installed my intake last year and haven't had any oil pooling where your does. My neighbour replaced his intake (with no thread sealant) a month after I did and he had oil pooling. He put some thread sealant on them and no more oil.