ZL1 engine

[rpoz11]

Basically, this block appears to be a latter issue of the original from the original molds. I'd bet most that this was a early 70's re-issue based upon demand. As Ive heard, and Im NO authority on it, the original run was made, stopped after enough warranty blocks were poured, and then re-poured again later for a small final run. I did not see any VIN stampings on it whatsoever. With the smaller 2 in the 3946052 casting number, I will bet my Camaro on it that this was a 70-73 re-issue. The heads I think were 73 or 74 dated and the 163 was obviously not correct for it; I would like to allow the new current owner to finish off here on this since it is now in his hands.