Your engine is a 235. If you get the casting # off the block, found near the fuel pump, call an outfit called Patrick's in Arizonia, I'll bet it was cast in 1953 at the beginning of the model year. If you take the valve cover off, there will NOT be four holes around the edge for the more common valve cover seen on 235's. It is a sort of rare cross over valve cover, probably left over from the older 216 / 235 babbit bearing engines. I know this because I have one, it was made in Nov. of 1953. The earliest of the full lube 235's.
