That number on the block pad by the water pump will tell you everything you need to know about the engine, but I'll try to find the info for you a little later on this evening.

If that fails to identify the motor, the only other way that I know of determining it's displacement is to remove a head and measure the diameter of a bore. Not fun, and a lot of work, but you can tell in a minute or so if you have a 4" bore block (350) or not.

Randy