Forged crank ?
HI!... All 5.4 engines have a forged steel crank. from the factory. Most replacement 5.4 engines though have a cast crank. The factory forged steel crank is the same used in all 5.4's and is capable of handling towards 900H.P (flywheel).
https://www.f150online.com/galleries...4860-75388.jpg
https://www.f150online.com/galleries...4860-75388.jpg


