Yea the front cab mount was shot. If you look closely you can see it binding against the fender and the door.
I'll get to her one day..... Many many days from now ha.

 

Thank you kind sir!

 

Guess I could cross it up with one wheel on a ramp in the driveway and look under to see if I can tell where the flex is coming from. Is this a bad idea?

Thanks all for the info.

 

You could but will see NOTHING, unless the frame is broken, which I doubt it is.

That is just normal

 

Mine has been three wheeling a few times, doors don't open and it looks twisted as all hell, but it all goes back to normal afterwards. That was crawling, no high speed abuse here. Never looked like Puddy's though!

 

You might also see broken cab mounts, which is more likely than a broken frame, so it might be worth the little bit of effort.

 

It has suspension and axles from a F250. If the suspension were more compliant, would that help? It has a rear sway bar. If I unhooked the sway bar, would that help?

 

Help frame flex and articulation, sure some, it's a trade off though.

 

Frame flex on a C channel frame is common, our era trucks move no question to it. Watch a loaded semi take off watch the left side of the truck pick up they flex too, just not as much. Even the 04+ fully boxed frame 150s ride in one of them and watch the bed in the mirror they dance quite a bit. There has to be or if it is too stiff it will find weak points and there will be the start of the cracks.

Example; When I use to do my fleet repair on a lot of GM trucks(early 80s-mid 2000 trucks) the 88-98 were bad about cracking in the boxed areas under the cab. The frames under those trucks were kind of sad frames where the hitch mounts will deflect twist and before long your hitch is no longer straight its pointing down. Where the C narrows they will go to crap there and top of the bed and cab will touch, but that is like a rock .

Curtis