Quote:

There is no window for the casting date. There might be a window for engine assembly date but even that would be suspect.

Mopar was horrible at inventory control during the 60's and 70's. Lots of engine blocks sat around for months (years) before being used.



I can vouch for that. Had a 413 in my 64 300, the 413 was stamped as a 63, then over stamped for 64 and the casting dates were consistent with a 63 as well as the four bolt valve covers, rocker stands, etc. Chrysler used them up that's for sure.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.