Did your converter or flexplate have weights on it? That looks like a forged crank dampner though also the crank not being drilled for a manual input also says later model forged or cast crank. Most of the 440 forged cranks I have used were at least rough drilled for a 4-speed pilot.
Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
also the crank not being drilled for a manual input also says later model forged or cast crank. Most of the 440 forged cranks I have used were at least rough drilled for a 4-speed pilot.
