My casting number is: LEA42791

When I decoded it I got that it was a '53 235 (babbitted) because of the LEA prefix

But looking at this page Engine Identification, it says that 4 bolts holding the
valve cover down is a '54-'62 235. Conflicting with the previous ID. Here is a picture

http://memimage.cardomain.net/member_images/2/web/2918000-2918999/2918915_9_full.jpg


Can anyone clarify this for me.

Also, my dad has two old inline motors out of some 3100 series trucks, I got the number off one of them, it was located
on the same spot behind the distributor: 044303IT54Y

I found the T54Y part on this page
Block Casting Numbers
,but it was under prefixes, and since
those characters are in the middle, I'm not sure, it listed it as a '54 235, which would be about right.

Thanks

1953 Chevy 6400