I have a 1951 3800 with the following information:

Engine Casting Number - 3835911
Head Casting Number - 3836848
Engine Serial Number - HCA408364

I have researched and found that the engine is a 235. Is this correct?

I can't find the Serial Number anywhere. I can't find the head and engine casting numbers together based on the research and sites I have reviewed.

Any help on figuring out what I have?

Thanks,
James