Bedlam wrote:
The Dana in the F350 is not the same as the one in F450. Same model class, but the latter has bigger gears, brakes and axle tubes. Expect roughly 11k lbs Dana rating on the F350 and 14k lbs Dana rating on the F450. Research the specifications in the Ford body builder section for the pickups and chassis cabs but realize those are Ford's ratings and not Dana's.
Got it. Sadly, the Dana 80 and AAM in the older trucks were 11k rated, so shocking they made a lighter duty Dana 300 with the same capacities. I'll do more reading, the F450 doesn't really cost more in the end.