Not sure what you are asking for help on. The second pics dont look like the same engine. A little more explanation?
In your other post you were asked to measure the head. 23" = 230 (Dodge & Plymouth) 25" = 251 (Chrysler)
One picture of a Mopar flathead six, and three pictures of a cylinder head on an OHV V8, probably a Pontiac. That's all the help I can give, based on the information.
The OP posted these photos in relation to his other thread of the same name. Perhaps his questions there will provide context. https://www.jalopyjournal.com/forum/threads/help.1303570/#post-15022468
I am trying to identify to get some idea of the value. This stuff has been left for me to dispose of and I really do not want to scrap it if someone can use it. I have my truck but no need for these parts. Thanks for everyone's help Mr. 48 chevy was a help on the Pontiac.
This is the second thread about this. The other thread has more info and better pictures. For the OP don't start more than one thread on the same subject. Here is the link https://www.jalopyjournal.com/forum/threads/help-identifying-parts.1303570/#post-15022737