Frame chop done! Lwb to Swb finished!

[jbohall001]

Hey guys, tommorow morning im gonna start the process of lwb to swb, and im just having trouble figuring out exactly how much to cut out. Ive seen a few posts but no good solid answers. Does anyone know where there may be a diagram with measurements for lwb and swb? I could figure out everything I needed from that. Please help guys!! (10,000,000 internets points for the guy with good info

[jjh59]

go to tech/tutorials on this site,and dimensions and curb weight

[70_F100]

Maybe this will give you the info you're looking for: http://www.fordification.com/tech/bodybuilder70.htm

[fordman]

put the swb bed on your lwb frame. center it up so the wheels are in the right place inside of the wheel wells. measure the distance between the cab and bed. also note the differece in the wheel base of the short beds and long beds. 131 vs 115 i think. 16 inches if those figures are correct.

[jbohall001]

Yep it was about 16 inches. I used the diagram in the link above. I got it all done though. Im pretty darned happy with it. Way easier than I had expected.

[1971ford]

I'm about to do this with My spare f100 frame that i restored. I want to build it into a full race rig.
I also want to do it to my f250 race truck. Doesn't seem hard at all.

[jbohall001]

Nope pretty easy. I had it done in roughly 2 hours taking my time . I can post pics if anyone wants to see them.

[1971ford]

It would be interesting to see how you did it.
Did you cut it in a diagonal so you're not just going straight down the frame? Plate both sides?

[fordamericana]

Nope pretty easy. I had it done in roughly 2 hours taking my time . I can post pics if anyone wants to see them.

I would love to see some illustrations on that, I have been seriously considering doing this myself...

[jbohall001]

Well here you are sir......... all I used was a wire welder, $10 4 inch angle grinder with cut off wheels, one c clamp, and two jack stands .

[aaronb]

i need to do this to mine also.

[BobbyFord]

You will need to "fishplate" the joint section where it was cut. If you are not familiar with fishplating, you can Google it or go to the Miller welding forum ( http://www.millerwelds.com/resources/co ... es/mboard/ ) and search there.
If you do not reinforce that diagonal weld you may very well wind up with a two-piece truck.

[jjh59]

looks pretty good,but the frame should have been z cut,than rewelded for strength.

[tnlprt]

No need to plate both sides
Just get your self a 2 foot piece of C channel either 6 or 8 inch and weld it inside of the frame rail

You will not bend the frame trust me I regularly haul a 15K trailer with a stretched dually and have never had a problem

With the C channel on the inside of the frame it cleans up the look of the frame rail

[jbohall001]

Oh ok. Well today (before i read all this ) i actually took the frame pieces i cut out, split the down the middle long ways, and wrapped them around the frame and welded it like so. I also cut the bed down also, ill post pics later.