Please school me on this motor

FYI, I do have a brand spankin new 318/340 pan I can not use that was sent to me by mistake. Food for thought

Thanks, when I get the other one out, I may find a new one to be needed, and will keep it in mind. But this one is done. I had it left over after putting the 340 in Dad's 65 Barracuda.

The more I look around my stuff, at my age I need to be getting rid of some stuff.