Forum Discussion
ron_dittmer
Feb 09, 2021Explorer III
Many years ago, I got into comparing the specs of the Ford E350/E450 and the Chevy 3500/4500 chassis.
Comparing frames of the E350 to the E450, the gauge thickness of the E450 frame it a tab bit thicker than the E350 but is otherwise dimensionally identical. At a glance, you don't see a difference, but you can measure the difference with a calipers.
I recall the frame of the Chevy/GM is dimensionally smaller than the Ford, and it is significant. I don't know if GM uses a different type of steel to achieve it's GVWR, but I always wondered about the stability of it's physically smaller frame. Given everything else identical, a physically bigger frame would have less frame twist over uneven surfaces. Less twist means the house is better protected from seams breaching.
Comparing frames of the E350 to the E450, the gauge thickness of the E450 frame it a tab bit thicker than the E350 but is otherwise dimensionally identical. At a glance, you don't see a difference, but you can measure the difference with a calipers.
I recall the frame of the Chevy/GM is dimensionally smaller than the Ford, and it is significant. I don't know if GM uses a different type of steel to achieve it's GVWR, but I always wondered about the stability of it's physically smaller frame. Given everything else identical, a physically bigger frame would have less frame twist over uneven surfaces. Less twist means the house is better protected from seams breaching.
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