So, How Does the 5.4 Compare to the 6.2? (Oh no not this **** again)

[The Tank]

A truck tuned for corn could pick up a lot more then Ford says with there very safe tune.

 

[bstoner59]

Another crappy reason to live in CA...not many E85 stations around. Hippycrites...

 

[The Tank]

Another crappy reason to live in CA...not many E85 stations around. Hippycrites...

VA is the same way well we dont have hippies.

 

[NoCaDiver]

I don't know where you guys heard that Julian is/was running E85, but I do NOT believe that is/was the case.

Riku is right, JDM's tune doesn't really change OffRoad Mode.

Hell I don't think any tunes change the offroad mode, at least from my understanding.

 

[RIKU]

In regards to tune's like the JDM one, is it safe for your transmission?

Of course the guys at ford say it will cost me 4-5k if something goes wrong.

 

[MarkT]

Dan needs to change his icon to a big otstir:

The 5.4 was tuned with intake and exhaust

if you mean the Ford factory tuned exhaust and Ford factory tuned intake (complete with stock "paper" filter) that came with the Raptor you'd be correct.

The truck would have to be stock to be able to run E85 unless the owner has a few tunes and one being an E85 only tune.

Good point. I never heard of an E85 tune advertised. I wonder if you can run E85 after installing a "off the shelf" tune? But in this case, the only "tune" on either truck is the Ford factory one.

I don't know where you guys heard that Julian is/was running E85, but I do NOT believe that is/was the case.

I don't know where you guys heard one of the Raptor's was Julian's.

 

[MagicMtnDan]

I don't know where you guys heard one of the Raptor's was Julian's

I can't divulge who the owners of the two Raptors are but I can tell you that it wasn't Julian.

Only one or both of the Raptor owners can step forward and reveal themselves.

 

[The Tank]

Mark you seem to know a bit about what is going on. I think you're holding back on us.

 

[MarkT]

Mark you seem to know a bit about what is going on. I think you're holding back on us.

When something like this comes up on a forum people are simply going to believe what they want to believe and the whole discussion tends to degrade...

And mostly I'm kind of tired of the whole "5.4 vs. 6.2" debate myself... but that does not mean I'm not curious about the engine differences.

I can give you this update: The very next night a 5.4 Raptor (running E85) and a 6.2 Raptor (running regular grade gasoline) made a whole bunch of runs on a dry lake bed in 4WD.

Every run on the dry lake started at a low-ish speed and ended at or past the the point the speed limiter kicked in. (Curiously, the 5.4 had a tiny advantage on the top end during the longer runs as the 5.4 speed limiter seemed to be set one mph or so higher than the 6.2)

For all intents and purposes, the Raptors were equal. On a track, the difference would be more which driver got back on the gas first out of the corner. (Not so curiously, the slight advantage here went to the 6.2)

No conclusions can be drawn except that these two Raptors under the conditions (about 100 degrees outside for one) ran pretty damn equally under full throttle acceleration.

That said... a "drag race doesn't tell all".

I have a 5.4 and have had the honor of driving a 6.2 Raptor off road. As many have said, the seat of pants feel of power between the two engines is not what you'd expect (and even much less so if the 5.4 is running on E85).

The 5.4 has been around a LONG time so what I'm going to say next is almost as counter-intuitive as what I've already said... the 6.2 simply feels more "refined" than the 5.4. The 6.2 has far less of that "hey-I-think-someone-put-a-rubberband-in-the-throttle-linkage" lag and just feels better... like it's always right there when you want it. Again, not HUGE difference... but definitely a difference.

My opinion is that Ford did an excellent job on the tune for both engines. With what I know now? Weighing all the factors? If someone said "you can upgrade your 5.4 to a 6.2 for $3000"??? I'd be driving a 6.2 if I had the $3000.

But I don't regret buying the 5.4!!! (And I'd like to think this is exactly what Ford intended... )

YMMV

P.S. In response to one of the earlier posts, my 5.4 not only revs to the redline without manual shifting, but it occasionally hits the rev limiter in first gear! Neither Raptor was shifted manually.

 

[LVdezertdawg]

In response to MarkT's post above....I can neither confirm nor deny the presence of nuclear weapons:bananarock:.....however, I was the other half and agree with all the facts as listed above. I have video evidence to prove that under the above circumstances there is little difference between the two engines. I bought my 6.2 for the reasons that I bought it for and it does not matter to me where all of this continued argument ends. I have listened to all of this for two years and I know the answer in my mind. Bojangles said it best when he stated that the difference is in the driver. MarkT could leave me setting in either truck and outrun me in the dirt because he is a better driver. I LOVE my raptor and have it in the dirt 3-5 times a week. That is where it belongs. Enjoy all engines raptor brothers and sisters...just get them dirty!!!!!!!!!!!!!!!!:cactus::cactus::cactus: