I am looking to change a cab & box from a 1990 f150 ext cab short box, to a 1987 f250 reg cab long box. Is this a possible change? I can move mounts and do other small modifications but I don't really want to get into lifetime project, this needs to be done asap.

 

I wanna do this myself but make a flatbed type box.If you are using the 87 drivetrain I would imagine some of the wiring may be different.Im sure the rear cab mounts are different but thats pretty easy to overcome.

 

are you going to swap two complete cabs? what about the dash and interior? are the cabs from diesel or gas trucks and are they the same? the swap can be done but it might not be a weekend thing depending on the cab's and what parts you need to swap.

 

the trucks are basically the same option wise, I am wondering if you can change from a reg cab to ext cab?

 

Subscribing. Im planning on swapping a cab from a 89 regular cab long box, to a 91 regular cab shortbox that i have.

Id be interesting on seeing how much of a pain in the @ss it is for ya! Im going to do mine in the spring/summer in my spare time.

Im sure I read before that the extended cab will fit on a regular cab frame too.

 

The EXT cab short box is a longer wheel base(137"?) than the 133" regular cab long bed. Might cause problems if you are not planning out using a flat bed.

 

I don't know about regular cab to super cab but I do know a bit about cab and box swaps... Seeing as your from Canada your probably going to suffer through the same problems I had which is rusty and seized bolts. Although I didn't swap my cab I did swap my box and front clip and replace the cab mounts. The biggest problem I had was with rusty and seized bolts that held my box and front rad support... nothing which a torch and a BFH couldnt take care of though...

Now you might be able to get the bolts out of the cab mounts and leave the mounts on the frame... thus making the swap as easy as the four bolts... but if things dont workout for ya and or you want to replace the cab mounts I've found a trick that really helped me out.

I've read allot of posts about replacing cab mounts... it's not a fun job on these older trucks. The factory mounts are pressed or pinched together making there removal ridiculously difficult... add a bit of rust and it seems impossible. I've read of people burning through them... thats allot of rubber to burn through, I've read of people cutting through them with a sawz-all... it's not fun trying to cut rubber with a reciprocating saw... trust me I tried, and yet other people using a very long drill bit to drill the steel sleeve that ties the 2 parts of the mounts together... I would think it would have to be at least a foot long or maybe more. My new cab mounts came with instructions which recommended making a puller with bolts and washers but even that didn't work...but I found a way that worked really good for me.

What I found was that if you take a long extension preferably 1/2'' drive with the appropriate sized socket and place it on the nut thats on the bottom of the mount. Now take a jack and place it under the extension and jack up the truck... now I dont mean jack it all the way in the air but just enough so that there's a small gap between the mount and the flange thats on the frame. If you cant see the gap use a prybar and or jack it up a bit more and eventually you'll see the sleeve or collar that holds the two parts of the mount together( there sandwiched on either side of the frame flange). Now you can use a sawz-all and cut the sleeve (without cutting through 4'' of very hard rubber) and remove the mount. I spent 3 hrs trying to do the 2 mounts on the drivers side and about 15 mins on the passenger side with this little trick.

I dont know if it will help you but I've been waiting about 5 months for the opportunity to share this with you guys cause like I said replacing cab mounts can really suck...

 

Thats a cool lil trick there man. Does thjat mean when I start to do Phoenix's mounts your gona help.. LOL

Waiting for a nice spring day so I can start on the Phoenix project.
Sun Beer and workin on a Ford "sounds like fun"

 

Changing cabs from same year to same year is not a weekend project to start with. I'm in the middle of doing it on my 1993 That i wrecked.