[rritchey]

FFR428,

The link to the auction is in my first post. After a little more research, I have found out that some later marine blocks did not have the pressure relief. It must be a marine block - but it is not a "cast as S.O. but drilled as C.O." block because there is no center oiler plunger hole at all. I'm not so sure it is worth having anyway, because it has a crack that must be repaired - definately a roll of the dice.