From a previous post: "I have a '53 GMC with a block labeled "3837004". Does this mean it has a Chevy 235 in it? The head reads "3835913".
I appreciate any help. I just picked this project up and I'm trying to ID the parts to make sure I get the right parts."
The consensus was a 55-57 Block with a 54-55 head. Due to the overlap being 55, I've been calling it a 55. The bore size, bearings, oil lines/pressure all indicate 235.