74 or lower were forged cranks, that means a lot if you're really gonna build them. Ranidart,You made a great point about the horsepower gross and net! Some guys don't know that.
The forged crank was phased out of production at the end of 1976. The cast crank /6 can be identified by an "E" stamped next to the engine number (i.e. 225E).
- according to the Mopar Engines book.
