I have a 48 Chevy PU. I am not sure what engine is in it. I was told it has a 235 and it's not the original engine. I need to make sure. I tried researching it but I'm still not certain.

The valve cover has 4 screws, two on each side of it holding it down.

The numbers just above the starter on the block say:
072I589F54Z but these numbers don't seem to correspond to anything meaningful.

Can anybody steer me in the right direction?


1950 Chevy 3100 5-Window
1946 Chevy Panel 3/4 Ton