[rpoz11]

[ QUOTE ]
The casting number must be correct for the year of the car and the casting date must be before the build date of the car to avoid a point deduction, period.

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Ummmmm....
Hhmmmm!

As I am reading this, you are Specifically pointing out (NCRS) Judging only.
A 351 block in a 67 Vette must have a preceding build/casted date repalcement CE Block.
Now, Why is this original block being replaced by a previously assembled engine?
OK, maybe an engine failure prior to shipment, maybe.
Seems logical.
However, I still stand to Chuck's pointe that a latter date code should be valid, and why not???!!!!!!
Does the dealer actually look for a previously date coded replacement block back in 67?
NO!
They will replace it with the appropriate GM authorized unit, and one that is available to either be shipped for installation at the Chevrolet dealer, or with the appropriate unit, either at that dealership, or one from a local dealership in the vicinity.
Tell me, how many of these CE blocks did they have to choose from back in 1967?

I find it hard to believe that a natural order of preselection occurred back then, but maybe there were shortblocks sitting ready to be used.
But how available was that 351 Block in, for example, in Flagstaff, Arizona...when the engine let go?
Did the Chevrolet dealer or division hunt down a previously dated 351 CE L88 specifically for this car?
How many 351 CE L88s were in that vicinity?

I am suggesting only that the following CE stamped and coded L88 was assembled as a warranty replacement or as an over the counter unit for sale to the public.