For those of us with Chrysler Corporation products built after 1966, the small-block family consists of engines derived from the "LA" 273 package introduced in 1964. These came in 273-, 318-, 340-, ...
They often say that variety is the spice of life. No doubt, in an alternate reality with nothing other than Mopar 360 small-blocks or 440 big-blocks (as great as these engines are) it's likely folks ...