1969 383 crankshafts: cast or all forged

If the pan is off you can tell by looking at the shape of the counter weights.
Squared off corners for cast. More of a rounded shape for forged due to the metal being hammered/ squished between shaping dies.
Also the parting line will be wider also on a forged cranke due to it went thru a
stripper die to trim while it was still hot. Cast steel cranks have a narrow
parting line. You can always tell if you know what to look for.
Forged will ring like a bell also when tapped.