Low oil pressure?

We do it with X bolted hemis and aftermarket caps
putting oil in at the parting line seems to work and does not affect the bearing support
but if you are using full grove bearings you could put the oil in anywhere- the bearing groove is not big enough and the crank disturbs it as a good oil channel due to the surface tension of the moving crank
also remember NACA ducts if you want to suck up a fluid