Welcome to the VCCA's website! It sounds like a cool project.
If you post some photos, it will be easier to answer your question. Click on the 'Use Full Editor' button below and then use the Attachment Manager to select (or drag and drop) your photos into the window so they will appear with your post.
One thing to check is the casting date on the engine. On the four cylinder engines that I've seen, the casting date is located on the right side of the block and between cylinders two and three.
It is a three-part code. The first character is a letter that designates the month (A-Jan, B=Feb, etc.). The second part is the day of the month (1-31) and the third part is a single number that designates the year (6=1926, 7=1927, etc.).
Here's a thread that has a bunch of info about differences between a couple of years: Differences between 1923 and 1924 Chevys