Well I am pretty sure the "knocking" is coming from the block. It's hard to tell because it sounds pretty much the same whether you listen at the head or at the block. As for the oil pressure I got a pressure tester and it reads about 50 psi at 2000 rpm and about 30 psi at idle. My stock gauge reads about 45 and 65 respectively. I don't know what the exact specs are for oil pressure on this vehicle but these numbers seem reasonable to me. Where do I go from here??? I really appreciate you guys taking the time to help me out. Thanx again, Scott