Something is not right that the pan is sitting on cross member. What pan? What year block? Last 8 birds I worked on had a minimum of 3/4" inch clearance with factory pan. I have a milodon pan on my 68 with at least 1" clearance with regular rubber mounts. Someone did not do a proper job on installing the oil pan, should not be any leaks. If you had all the supposed blow by it would be pushing oil out of various other places as well.
