Originally Posted by rracer5
Sounds almost too good to be true. How can they beef up the frame either by extra bracing or "heavier" frame rails, larger brakes and associated parts and heavier springs without adding any additional weight? Even if they use lightweight materials, it still must add some weight. And what about the durability of those materials over the long run?
Mostly by design, with the hydroform process. In addition, by strengthening the cross members and welding the cross members on two sides. The braking was increased by increasing the sweep area of the brakes. These changes were made last year with the new version F150 when they upped the max towing capacity to 11,300 but still had the 5.4 liter engine in it. The new version is slightly heavier even with a slightly lighter engine. I have read some reports (not confirmed) that they had to put a heavier rearend/axle in the Ecoboost trucks because of the additional troque. The new 6 speed torqshift transmission, computerized sway control, VSC also helps. The one thing the F150 does not have is just pure mass of a 250 that helps to keep the TV from being tossed around in heavy winds on occasion. If you only tow occasionally..the F150 is a viable option. If I was full timing it....250 with the new diesel engine or the Chevy HD with the Duramax looks good. Right now, I am just a weekend warrior towing flats and only slight grades a majority of the time. Time will only tell about durability....they have supposedly tested these things extensively...we will see. My brother tows a 10000 pound trailer around the Appalachian mountains of south central PA without issue.