My guess would be cast. I think mid 1973 or so cars switched to cast cranks. I've read some still got a forged crank if it had a 4 speed or was a truck or police engine. Others will more knowledge will chim in I'm sure.
^^^ That's the story of my life brother. & if it is a steel cranker it will make we wanna grab/purchase another early A body to drop it into, Like I need another (un)finished project at the moment.
^^^ That's the story of my life brother. & if it is a steel cranker it will make we wanna grab/purchase another early A body to drop it into, Like I need another (un)finished project at the moment.