On Mon, 31 May 1999, Shannen Durphey wrote: > Pre 67, small journal, small block v8 were all forged cranks. GM listed, and I have seen both cast and forged ESB cranks. FWIW, GM had two main block castings, a 283 and 327 type. Some 283s started out as 327 castings, with the block reliefs for the 3.25 stroke crank.