Grrrr!! What are the big three trying to do????

FishOnOne wrote:

The third gen Dodge rams with box frames didn't have higher bed heights.

The GMT700 trucks with its very tall C channel rear frame section had lower bed heights that the current generation trucks with much lower profile rear frame section that has a much higher bed line.

The F150's with the C channel vs the boxed frame had very similar frame sections in terms of height but had nothing to do with increase bed height.

Part of the reason for higher bed lines is improved aerodynamics and taller body panels to give the truck a much bigger look.

Sorry, but it is true. In order to make a fully box whole frame frame(not mixed) tow a lot of weight, you have to make them huge in comparison to a C channel or mixed Channel/boxed frame. Heck, even Ford has stated that the new frame is over an inch taller in their brochure.

"Through-welded, closed-section crossmembers, used on Super Duty for the first time, help increase
torsional stiffness. Frame mid-rails are 1.5" taller for added stiffness. "

All new 2017 Superduty

Those other trucks you mentioned either are not rated to tow a much weight compared to today's trucks, are only boxed in the cab, or are a mix of C channel and boxed in the bed section. These truck are taller because the fully boxed frames have to be versus a channel to tow what these truck are rated at.