I though I already posted this question, but I can't find it. Maybe it got deleted?

Anyway, I simply want to know how I can visually tell the different LA engines from one another (not disassembled)? If someone tells me they have a 340 in their car that I am thinking about buying, how can I tell it is a 340 versus a 318 or 273 or 360?

Also, how can I tell a carburated magnum engine versus the LA engines? All of these questions apply to an engine residing in a car.

Thank you in advance.