I know the engine is a non-original 235. I'm trying to ID the engine. Casting #3837004.
These are the same numbers that I have on my engine and mine is from a 56. The numbers are for 55-57.
If you should have to pull the pan, there are some numbers on the left side of the crank boss' that will tell the year, such as 55,56,57.
Hope this helps.
Jeff