E 450 V8-5.4L (2009)
Flex Plate: Specifications
Install the flexplate and the 8 bolts. Tighten the bolts in 2 stages in the sequence shown.
Stage 1: Tighten to......................................................................................................................................................................................20 Nm (177 lb-in).
Stage 2: Tighten to.........................................................................................................................................................................................80 Nm (59 lb-ft).