Dent frame

[bluef250]

I know this has been discussed, but now I don't have time to research. So, is the front frame on a 1973 the same, same dimensions as on a 67-72 f-100? If so where did the frame start to widen for the rear?

[H-DFord]

I was told it started to widen behind the cab. John

[mrtleavitt]

Under Tech/Tutorials under Chassis comparison it gives all the info that you'd want about the differences between the two frames. Basically from the rear of the cab forward everything is the same. But from the rear of the cab back everything is 4 inches wider on the '73-(frame and axle). I believe the '73 is like two inches longer as well. That is from the cab to the back as well.