After help from JesterB & Euclid dads F motor was out. This evening I was removing items for a clean & paint on the block. Before removing the water pump wanted to remove the excess water from the block, removed drain fitting from lower drivers side of block & nothing. Look with a flash light & found black/gray shiny material hardened in its hole. With a ice pick I removed it....& more & more. Has any one heard or seen this before....maybe JB weld but why?