360 oil psi dropped all the sudden

Just to make something clear here. The reason why you don't over fill a crank case. If the crank is "dipping" down into the oil, It causes the oil to foam up. The the Oil pickup can't pick up the foam it needs pure oil. Not saying this was the cause but it's always something to consider when dealing with Oil pans and filling them up. And +1 to needing a Baffle in place.