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Old 06-17-2012, 05:18 PM   #1
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F-150 5.4L to EcoBoost

Hi all... Was wondering if anyone has made the change to the EcoBoost engine in an F-150 from the 5.4L Triton V8 and, if so, was it a perceivable difference?

We recently purchased a Roo 21SS (GVWR 5743lbs) and I would say that it tows “pretty good” behind my 2006 F-150 with the 5.4L. Just wondering if the extra 55 hp and 65 ft-lbs of torque would help take the hills a little better. Before I dug into the specs on the EB, I was eyeballing the 6.2L V8 option also… Gets about the same mileage as my 5.4L, but has an extra 69 hp and 111 ft-lbs of torque (in the F-150 body, anyway…)

I think I’m probably just looking for an excuse to get a new truck, and just window shopping at the moment. Getting into the Super Duty line comes with a lot of sticker shock for the “creature comfort” options that I “need” so I guess my open ended question here is: would I see much of a towing performance benefit if I stayed in the F-150 line but took advantage of 6 years of engine/transmission technology advances.

Opinions?
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Old 06-17-2012, 05:56 PM   #2
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I went from an '05 5.4 4-speed w 3.73s to a '12 3.5 Eco 6 speed with 3.73s. There is a very big difference; and it's not just the drivetrain. Lots of new and great technology; anti-sway for trailer, integrated brake controller, Sync system, etc. IMO, and others may disagree, the Eco will out-pull the 6.2 because the torque is available at lower RPM; and it's much more fuel efficient. You can't just look at the overall torque number. It's just as important, if not more important, WHERE the torque is delivered. Look at the RPM where the peak torque is delivered.

You will also find the 6-speed to be just as big an improvement over the 4-speed as the Eco is over the 5.4. Less RPM change between gears, does a better job of staying in torque converter lock; tow haul mode; much better ability to control the gears you are using.

We are finding our Eco to be a good 10% more fuel efficient than the 5.4; both empty and when towing. 18 to 20 empty and about 11.5 towing our 5,500 lb RV trailer at 60 mph.

If you had a 5.4 with the 6-speed, you might want to stay put. The 5.4 really is a great towing motor; nice flat torque curve. But I think you'd be real happy with the change. Our '05 looked and operated just as well as the day we bought it; but technology moves on; and you would appreciate it.

Good luck!
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Old 06-17-2012, 06:41 PM   #3
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IMO, the trailer is not heavy enough to justify a new truck purchase.
My only concern about the Eco is the long term effects of the heat from the turbos on the electronics and other components.
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Old 06-17-2012, 06:46 PM   #4
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Many thanks! The EB certainly does have a lot of fans from what I'm seeing, and rightfully so according to the numbers. It seems sooooo counterintuitive to consider a smaller engine when wanting to do "more" though.

My current F-150 is a 4 speed auto with a 3.55 rear end. Like yours, it was kept in pristine shape and I've loved having it... Trading it in wouldn't even be crossing my mind if we hadn't bought the camper. I would just like for a littttttle more spare "oomph" on reserve when needed. (The extra mileage and neater gadgets are certainly a plus too.)

Anyway, thank you for taking the time to share your personal experience... Much appreciated!

Jason
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Old 06-17-2012, 06:57 PM   #5
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From what I've read, the extra MPG goes away very quickly if you can't keep your foot out of the throttle...
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Old 06-17-2012, 07:02 PM   #6
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Quote:
Originally Posted by Twisty View Post
IMO, the trailer is not heavy enough to justify a new truck purchase.
My only concern about the Eco is the long term effects of the heat from the turbos on the electronics and other components.
Very fair thoughts too... Historically I haven't been one to be very close to the "bleeding edge" of auto technology. Somehow or other, the current F-150 was actually the first vehicle I've owned that I purchased brand new and there wasn't anything incredibly revolutionary on that model year. It sounds like the 2013's aren't undergoing any big changes, so I think that is at least a little comforting.

As for the justification...... That's ultimately why I was fishing for opinions here. I'd like a new truck (who wouldn't!) but having some solid reasons for doing so wouldn't hurt.
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Old 06-17-2012, 07:04 PM   #7
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Quote:
Originally Posted by Twisty View Post
From what I've read, the extra MPG goes away very quickly if you can't keep your foot out of the throttle...
That one hit a little close to home... You been talking to my wife?
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Old 06-17-2012, 10:45 PM   #8
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Fast and quick don't come cheap!
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Old 06-18-2012, 06:52 AM   #9
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I made the switch from an '07 F150 XLT 4x4 CC 5.4L with 3.73's to an '12 F150 XLT 4x4 CrewCab Ecoboost with MaxTow (3.73's) a couple of months ago. All I can say is wow! There is absolutely a huge difference in power between the two. All it took was one test drive, and I brought the Ecoboost home with me. I haven't hit the 1,000 mile break-in for towing yet, but all indications are that it should be a noticeable improvement versus the 5.4L. My fuel mileage, mostly non-highway driving, is better than it was with the 5.4L, but as others have said, it depends on how heavy of a right foot you have. I will tell you that this truck will definitely move when you "give it the beans"...a move that still produces an instant smile on my face.
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Old 06-18-2012, 10:18 PM   #10
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Thank you! Definitely give an update after you break it out of the 1000 mile jail!
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