Decoding a "68 z28 302" by the pad stamps?

[itsazooitellya]

Can anyone help me with these pad stampings? I included the block and head numbers although the heads are newer. It is "supposed" to be a Chevy 302 out of a 68 z-28. Is it? If not what the heck is it??

[x66 714]

124378N455370 was the car the 1968 302 was in. Engine was built in Flint June 10th 1968....Joe

[itsazooitellya]

Thank you, so the stamping looks legit?

[cook_dw]

Pad is good IMHO

[itsazooitellya]

👍

[MO]

Three months from casting to build?

[cook_dw]

Heads aren't correct.  I don't see anywhere that shows the block casting date?  My comment was strictly about the pad stamp.

[itsazooitellya]

This it?

[cook_dw]

Yep and doesn't change my previous opinion on the stamp.

[itsazooitellya]

Okay, thanks again

[jdv69z]

So is that block cast date E228?

[cook_dw]

That is what I am seeing.

[firstgenaddict]

That is what I am seeing.

I see the same, which falls right in line with the Assembly date.

[itsazooitellya]

UPDATE: After further inspection, the engine is sized, has mismatched pistons, and a crank with the number 3941174, 327? So now my question is what is just the block worth? It is currently still 4" bore. The windage is intact also. Trying to decide whether I walk away or not. Does seem like the block should be with something though. 🤷‍♂️

[cook_dw]

It's only going to be worth the most to the person with the car.  Oddly enough I have another Z 1,000 vins off this one in my data.  Just the block can go anywhere from $1k-3k depending condition.