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I would need more of an indepth comparison to be able to respond to your post. Example, which engine and axle ratio did your '07 have? Which axle ratio does your KR have?

The 21 mpg highway for a 4x4 ecoboost is the EPA estimate for my truck. The truck in my signature is an XLT Scab 4x4 with 3.31 axles. My truck is lighter than yours and does not h ave an aggressive pulling gear but more of a highway gear. I am surpassing the EPA estimates in city and hwy driving.

 

You're right. But my point is: why push everything to the limits? In my experience if you start crowding the limitations and if one miniscule thing goes wrong, you end up with a charbroiled doorstop. Extracting all that power out of a relatively small space makes me nervous. True, there haven't been any documented failures--yet. I hope that never happens; Ford had enough troubles when they went from the 7.3 to the 6.0 diesel.

No doubt Ford has done its homework on this so I hope for the best. When it's proven I might even change my mind about owning one.

 

if you scrutinize past engines you will discover long stroke engines are better load hauling engines than short stroke engines. Short stroke engines tend to get rev higher with better top speed, long strokers are better hauling loads. I tow more than a case of beer or the groceries with my truck's and I'm not ready to give this new platform a try untill it has established proven ability to tow heavy loads over steep mountain passes without issues.
I love the concept

 

I use a XLT150 2013 with the heavy spring option and 7 lug wheels for work and I love the new 5.0. I've used Fords in the oil patch for 20 years and this is by far the best gas engine since 1972...14500Kms and 850kms a tank and accelerate hard from stops. WooHoo

 

My Wifes' '09 Platinum could really feel the altitude at our Arizona retirement house which is at 5800 feet elevation. It was normally pretty peppy when in Houston which is basically sea level.

We replaced it with an '11 Ecoboost Platinum and the difference in high altitude performance is profound. Little to no degradation in performance in the mountains. The only caveat is that regular fuel at those altitudes is only 86 octane and the EB has to have 87 or better so you have to run middle grade gas. But other than that the new EB truck flat runs better than the old 5.4 while there.

Now the question of whether or not the 5.0 would suffer a performance hit will have to be answered by someone who has driven one in both places. But for us and what we are doing the Ecoboost is the better engine to have.

Now if Ford could just give it that 5.0 rumble......

 

Ford needs to beef up the 5.0, Ecoboost it, and get about 600 HP out of it. Then you'd have the boost an the rumble.

 

Don't forget, you can always add a supercharger to the 5.0L for even more horses. For a work truck the 5.0L takes the day, week, month, or year.

 

2012 fx2 screw with the 3.55 gears and I'm getting 17 city and around 21 highway when I cruise. But I haven't gone a whole tank without getting on it to get around slow drivers or to make hemi drivers feel bad Lol. I know mine is set up best for fuel economy, but I didn't buy my truck to save money on gas. I bet the difference between the 2 is minimal, where the bigger difference is would be the performance towing and hauling. Anyway my main point is there is more to owning a vehicle than swinging the payments and if a mpg or 2 is gonna sway you maybe your shopping in the wrong isle

 

Bring your late model and pink to me....2000 F 250 crew cab 4x4 with the only engine worth having-- 7.3 power stroke, bama tune and 20mpg, loaded or empty.

 

2011 scab Ecoboost, 4x4 offroad package (3.73). Over 40k miles now. 80% highway/20% city. Overall average is 16.4mpg. That's 3 mpg better than the 1998 Dodge Dakota 5.2L it replaced but not stellar. My experience has been that the 20 mpg is achievable at 50-55 mph but interstates with the cruise at 72-75 mph takes it right down to 16.

 

yea I know it is the wrong forum, but you said any late model now didn't you!

 

I don't buy that, especially the loaded mpg. I have the same truck and and unless you are driving it downhill with a tail wind that mpg is very hard to achieve.

But if you are indeed getting these hand calculated numbers, pm me cause I want whatever you have hooked up to it

Sorry for the hijack guys, however I am interested in a new truck and the 5.0L has been the direction I am looking. But I do want to see what the new vans look like before making the move.

Dean

 

2011 f150 Platinum 3.5 Eco 3.73 heavy tow package. Best hwy 17-18mpg. 12-13mpg city. 9mpg towing a 23' enclosed snowmobile trailer with about 1,000 lbs in it.
21,000 miles. Maybe a 1mpg boost using premium fuel ( no diff for non ethanol blend). Pulls like my previous diesels but I am done trying to figure out how to bring the mileage up to the window sticker. Trading in this weekend for a new King Ranch Superduty with the 6.7.

 

Your not going to get the window sticker mileage with 3.55 or 3.73's. Those EPA numbers were achieved with the the 3.15's in a 2WD and 3.31's in a 4WD. My 2WD reg cab with 3.15's can do the window sticker but I have to baby it.

 

consumer reports mag says they found both engines to be equal at 15 mpg overall.