Problem Chris has got is we are talking Small bock vs FE. On the smallblock there are no high pressure
oil passages in the heads...so your head gaskets are out...really your only going to get it when
oil and water jackets in the block have a leak into them..
you did check the
oil to coolant flapper valve right? Make sure thats not stuck
Just kidding..Chris did you have any oil in the coolant? I saw Rob today and he said he had talked to you a couple of times since last week. I might be tempted to flush the system and refil it fresh then run it for a while and flush it again and see if any oil is in the coolant before I freak but how would it get there in the first place..