The Ford Long Beach California plant was brand new in early 1930. I think it came on-line about April or May 1930.
Here is a Long Beach plant photo I found when I was researching where my August/September 1930 pickup was built. I think I see my engine in the 86th row, 34th from the left
I actually have two photos, but when I tried to load the second photo, the dialog box said: "Your submission could not be processed because a security token was missing".
I'm sure someone has other photos to share.
.