Hey guys!
For the last 4 years I've had my grandfather's truck after his passing in January 2020. It is a 1952 Chevy 3100 and he always told me that it had a 1954 235 engine. Well... I never really checked that out I could tell it was a 235 engine for sure. But last night I took pictures of the casting numbers, serial numbers, and block numbers and found that it is actually a 1956 235 cast in Flint, Michigan. I don't know if that makes any difference at all or not. Maybe you guys could chime in on that! I did read somewhere that the 56 235 is better than the 54 because 54 was one of the earlier ones.
Read this link, go find the block casting code on your engine, and then post it here. That will help identify which year engine you have.
http://www.1954advance-design.com/Web%20images/casting-code-photos/codes-ser-nums.html