The cranks in the 5.4L DOHC and SOHC engines are cast or forged. Most of the cranks are forged, but not all. The only way to know for certain is to look at the parting line. Thick line for forged, thin line for castNo, it's cast. I assume that you have an 8 bolt and are thinking it's forged. There are thousands of 8 bolt cast cranks floating around that came out of trucks and SUV's.
Heard some things threw the grape vine about your car,Don't know if any of its true tho so i guess you could say i know nothingNot hardly. I haven't gone full retard yet.