Definately not. The pump body must be flat and tight on the main cap to hold it in place. Remember the output that then goes to the oil filter passes through there. If it is not tight it will leak like a rabid babboon with diharea.
Sorry DD, I was referring to the top of the pump hitting the main being bolt when it was being installed, not if there should be any clearance with the pump and the pump location.
Although you bring up a good point. Who uses a gasket there and who doesn't?