440 info

In addition to what Leo said here is a link that will show codes for other stampings on the pad. If see an "E" stamped anywere other than in front of 440 it is a cast crank, for example:
6T440 E The "E" would stand for a "cast crank" in a 1976 440

E440HP The "E" would stand for "1969" of a 440HP

http://www.moparts.com/Tech/Archive/motor/36.html

Chuck