what's this 340 marking?

[nixrsix]

I can't find the meaning of this number, "0064". It seems not all 340's have a number mark here? tia

 

[65dartcharger]

I can't find the meaning of this number, "0064". It seems not all 340's have a number mark here? tia

View attachment 1715529724

Can it be a test in the casting of the engine block?

 

[brian6pac]

I believe that is a 67 date casting block, they all had numbers like that

 

[A56]

I can't find the meaning of this number, "0064". It seems not all 340's have a number mark here? tia

View attachment 1715529724

Do you have a picture of the other side of the block?

 

[nixrsix]

Do you have a picture of the other side of the block?

I do...

 

[Demonracer]

That number may have something to do with a mold number, or foundry. I'm sure there is someone out on the site that knows for sure.

 

[brian6pac]

Was cast 1 day before mine.

 

[A56]

Was cast 1 day before mine.

I know right?