Casting number help please

[Jimlt4383]

What do yall think this casting number is? It's a ce block with the heads and oil pan on. Thanks

[Mr70]

It's upside down...3999290 w/a June 1971 casting date.
1972 402 2 bolt,240HP.

[Jimlt4383]

It's upside down...3999290 w/a June 1971 casting date.
1972 402 2 bolt,240HP.
Thanks for the help. I appreciate you!