Originally Posted by DeltaNu1142

Well... I was going to respond, but I remembered I already posted this info in this thread.

Originally Posted by F175

Proves nothing.

Originally Posted by F175

What do you know that Ford engineers don’t?

Originally Posted by DeltaNu1142

...it... what? I'm not trying to prove anything. I'm copying and pasting statements right out of Ford's own documentation.


Nothing, I'm guessing. So rather than be argumentative, how about you dispute what I'm saying with something based in fact? I've been posting this for a few years waiting for someone to come up with something better than, "well, the frame is thicker, so it's better, because it is." And I'd really like to know.

I'm positive that Ford had a good reason for increasing frame thickness on these trucks... but I don't know what it is. And if you knew what it was, I'd hope you wouldn't hide it from everyone. So go on... tell us. "Because HDPP" isn't good enough. Frame thickness doesn't factor into GAWR, and payload is calculated using GAWR. If you're following me, then let me know what the thicker frame has to do with payload. And if you're not... I dunno, I guess I'll just keep waiting.

Originally Posted by DeltaNu1142

Well, it hasn't been quite that long for me... not that it matters, because everything you're saying is anecdotal. And I'm not a structural engineer, anyway.

Thicker frame is stronger? Yep. But I don't think you're picking up what I'm putting down. Go find "frame thickness," or "frame stiffness," or even the word "frame" anywhere in the calcs for payload.

I'll wait.

Originally Posted by BlackBoost

Regarding frames, I can't find the 1 of the 2 documents as the links are now broken, but the one that's posted at the end of page one can be found by googling "15_F150_SB_Updates_010815.pdf" to find the reference to frame thicknesses, on page 84.

The other one I can't find, but the references go like this;

Any truck, any engine, any model all go by the frame specifications on page 84 of that pdf I mentioned above.

LD is regardless of what engine or trim based on specs if you have neither the payload package or the HDPP package.
HD on the chart is payload packages.
HPP on the chart is with the HDPP package.

Now this all varies as well when you get into longer frames where the default is standard HD, and the payload packages are the HPP...

For example 2.7 SuperCrew 4x4 145 wb falls under LD (0.87" frame thickness) but with payload package it's HD (0.1" frame).

Similarly, a 3.3L, 3.5EB or 5.0 engine in a SuperCrew 4x4 145WB will also have an LD frame unless they have a payload package to bring it to an HD frame.

This is why the chart shows that you can't get the HPP frame on a 145 WB because you can't get the HDPP package unless you have the 157 WB, and why LD and HD are the only options available for 145 WB (no payload package or with payload package)

Originally Posted by Kent5

I guess either they are mistaken, or I have a unicorn. 2020 145" WB 4x4 SuperCrew 2.7EB, no FX4, no payload packages, 8.8HD axle, 3.55, just the $150 bumper hitch, 6600LB GVWR -- but an HD frame.

Originally Posted by rd.king

145 super crew, is it a column shift or console.
when you say "$150 bumper hitch" do you mean a bumper with an integrated 2" receiver.

Originally Posted by rd.king

your truck has a 53B tow package and seats 6 adults.
I think that would explain the midrange frame being selected.