Is there a 350 in the world that doesn\'t leak oil? I've had 3 different small blocks in my K5 and every single one has leaked. The one I have in there now is a fresh 350 from a reputable shop. It was good for a few thousand miles, but now I switched to synthetic oil and bingo, leakage. Only about two drops every time I pull into the garage, but still... /forums/images/graemlins/mad.gif Never anyplace easy either, looks like rear main or something (settles onto bell housing).