The other day I was talking to this guy about my truck at a tire supplier/warehouse. The first question out his mouth was what engine you got in there 6.0, 6.4, or a CAT. I responded 7.3 with a funny look on my face. He said you know some guys are puttin' CATs in these trucks. I responded really??? He said yep, you know those CAT engines are so heavy when they put them in the front ends of these truck that they can't even go off-road cause they'll get stuck, even in the grass. The conversation ended and I walked away not really knowing if I should believe what he said. However, I do know that some Big Rig truck owners have elected to replace their engines with CATs instead of stock replacements. So can you really put a CAT in a SuperDuty and if so what model CAT??????
The smallest engine from CAT (highway) is a C 7 ( 7.2 Liter), but I doubt that you can fit a CAT under F 350-550 base. The engine is pretty big in size and about 1500 pounds. A 7.3 Liter measures about 1000Lbs, if weight is not a concern the dimensions is another story...
The 7.2L C7s (7.2L) were an option in the 650/750 series trucks, alongside 6.0L PSDs and 5.9L Cummins up to 2007. In 2009, the 6.7L Cummins and 7.2L CAT are available. They come with a pretty good selection of power setups to match the gearing and chassis type.
If you go back and tell him you can't get a Cat is an F-250 to F-550 chassis he will swear he has seen one before.
I used to work next door with the guy who installed a Detroit Diesel in an old F-350 chassis (an old 4-71 inline if I recall correctly) used to run around the Ballard area of Seattle a few decades ago. Some swore it was a factory install, but if you asked the guy he would tell you he put it in. Those old Detroits were 2 stroke diesels and had a very distinct sound at idle.
I always thought it would be cool to cram an old 3408 in a Superduty. It would probably take a "little" modification of the engine bay, but it could happen.
You gotta be kidding me. A Cat 3408 in a F-450, F-550, F-650?
The last 3408 I saw was in a 988B I bot brand new. You can check what a CAT 988B loader can do. The s/n of the machine I bot was 50W 4001.
This was years ago, but I will tell you that none of the trucks mentioned above could haul the engine. I vividly remember the machine bot was produced on a Friday in a strike year, and blew its nose after two weeks against a high wall.