That had to be some kind of specialty one-of-a-kind block. Had it been part of the normal production casting process one would think it would have had friends. There has been just too much investigation on the existence of 1967 castings to allow only this one to surface. It also seems strange that Chrysler would have had an inventory of 1966 castings available in 1967 and then went ahead and cast a 1967 casting? Why?

I do think it is interesting if you run the casting dates of Hemi blocks you'll find that the vast majority were cast on a Monday or a Tuesday. 2-9-67 is a Thursday.