i just bought a 97 f-250 and the last 2 1/2 - 3 feet of the frame is rusted out. so my question is. what f series frames are the same as mine?

thanks -will

 

The F-250LD and the 7700 models all have the same frame that is different from any other F-150, it is made of thicker steel to put up with the additional loads that these models were designed to handle. Good luck!

 

rather than replace the frame, it might be cheaper to take off the bumper and gas tank, and build two frame rails 4 feet long and replace the existing sections from the axle back?

 

"rather than replace the frame, it might be cheaper to take off the bumper and gas tank, and build two frame rails 4 feet long and replace the existing sections from the axle back? "

If you find a front-end wreck you could pull the bed and slice off the whole rear frame section well ahead of what you need. Splicing it in requires a SKILLED weldor/fabricator, but could certainly be done. It isn't a welding job for the inexperienced.

The other way is to look for a truck that needs an engine, trans, or both and just use the 250 for parts.

 

my plan was to chop the frame right behind the break line and find a frame from the junk yard and have it welded on. but i want it to have the crossmembers and what not.

 

"my plan was to chop the frame right behind the break line and find a frame from the junk yard and have it welded on. but i want it to have the crossmembers and what not. "

Ask your weldor where he would prefer to have the frame cut. (Bring pics of yours or show him the truck)