Frame repair measurment

[moparcyco]

I have a 1991 short bed 4x4. went to do some maintenance and picked up the truck with a two post lift. well when the tires came off the ground both leaf springs ripped right off the frame. After some research this is a known problem. So to fix I am going to cut the rails off under the cab about an inch. and probably use square tube that will fit the inside of the existing rail. does anyone know the inside measurement of the rail in this location? would be super helpful before I start cutting. My floors are mint don't want to cut  to measure if I don't have to. Thanks. Also was thinking just coming off the rails straight instead of the factory curve. This will be a custom flat bed. Anyone do this or know of a link? looking for the best way. Thanks

[boxyjeep]

Pics? How did this happen?


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[Wounded_Fighter]

On 7/4/2020 at 1:48 PM, moparcyco said:

Also was thinking just coming off the rails straight instead of the factory curve. This will be a custom flat bed. Anyone do this or know of a link? looking for the best way. Thanks

Sounds like a future bed/frame for sale... 

[Pete M]

I get roughly  3.25"x6.5" inner dimensions (that's where my comanche trailer is cut so I can see the cross section). 

 

 

 

 

[moparcyco]

Thanks.

[OldSch88L]

Pretty much all I could find in the last couple of years. It's for a short bed by the way. When I took my auto body course in something like 2015-2016, I took a look on Mitchell's and all the specs and complete measurements were available. I don't know if it's still the case, sure hope so!!!