Hello !
hopefully someone can help me out.

My brother bought a 2008 F150 with no motor (against better judgement) .. he is trying to find an f150 engine for it. In the other hand I could actually use the hauling power of an F250.

Is it at all posible to fit an F250 engine in to an F150?
if so what are the repercussions? Meaning what would also have to be upgraded for the powerful engine to not destroy the rest of the truck?.

let me know what y’all think.
Thanks

 

Welcome to FTE.

You will have better luck in this forum. But you need to provide more information.

What engine was in the 2008 F150? What remains of the wiring and controls? Transmission?

An F250 engine may or may not work, not because of power but because of engine control. Whatever engine you get has to be compatible with the electronics and transmission, if any, in the 2008.

 

Then you need an F250. An engine alone doesn't make an f150 into a HD truck.

Yes if it's the exact same motor. For example the 4.6 and 5.4 2V engines were used in all trucks, full sized E Series vans still use them to this day so if it's one of those you need these trucks may be a good source.
You are making bad assumptions about engines, the gas engines found in most HD trucks are less powerful than those found in 1/2 tons... the exception would be a diesel but those are too big and heavy for a 1/2 ton suspension.
The other factor that makes using anything but the same engine the truck came with is that engines and their control systems are very complicated these days. anything is possible but with vehicle security and other systems all being integrated with powertrain control a project like this can get quite expensive and complicated if it's anything beyond a direct plug and play.

 

If his F150 came with a 5.4 it will be a 3 valve, not a 2 valve.

 

As we were taught in physics class back in the day, Force = Mass x Acceleration.

A 5.4L Triton engine from a Super Duty will put out the same 300 hp @ 5,000 rpm and 365 lb-ft @ 3,750 rpm. What makes the difference is the extra ~1,000 lbs of weight that kind of truck has that an F150 doesn’t.

So, get more actual truck. That’s your winning ticket.

Even if you made a 6.4 PowerStroke diesel work in that F150, it wouldn’t do much. You lose several hundred lbs of payload and the handling goes to hell.

 

Pull air intake. Plenty of room underneath. Close to up fitter connections.

 

I think the engine is the same 5.4 3v , you may need the wiring harness and ecm that that new motor came from . The van motor is slightly different routing of intakes and that kind of stuff so I would avoid that . You are not going to get a 250 out of that .A used engine is a gamble and they are expensive , think reman .