The "848" head definitely indicates that it is at least a "235" later model head as noted by Bill H above.
Not saying so for sure, but this may indicate the numbers you have stamped in the block pad may quite possibly be a re-stamp for some reason.
Does this "engine" number show up anywhere on your title/registration documentation???
Maybe the picture attached below will help locate your casting code?
Does not require removal of the starter to find the expected 7-digit casting code.
Will wait for further updates.
Good luck in your search!!!
The rig is titled thru the serial number on the body. Nothing shows up from the engine number. I will go back tomorrow and see if there is anything by the fuel pump. When I scrubbed it all off at 4am I didn't see a thing. It's probably impossible to get pics down that low.
