i have seen an interview with a higher up ford rep. according to him all that was done to the 5.0L for the f150 was lowered the compression buy half a point,changed the tune for truck application and put cast manifolds on to better handle the heat generated when towing.other than that it is the same motor. i cant see them change more parts as that would cost them more on parts and lower there bottom line.

 

more power..........it's clearly obvious Ford is sandbagging all of the power #'s now.

read the Motortrend article on the Mustang GT 5.0......I'll find it and post - But Ford does a major sandbag job on it.

 

Here's a sample of Ford's sandbagging numbers............

http://www.motortrend.com/roadtests/...ing_price.html

5.0 ON THE DYNO
Ford says the 2011 Mustang 5.0 makes 412 horsepower at 6500 rpm and 390 pound-feet of torque at 4250 rpm. To check that number, we took the new 5.0 to our dyno shop of record, the research and development department at K&N Air Filters in Riverside, California. After examining the power peaks, K&N's techs suggested we use the fourth gear pulls for the 5.0-liter. Here's what we think is the most correct output figure for the new Mustang V-8:

2011 Mustang 5.0 (4th gear pull, 15% powertrain loss)
Claimed horsepower: 412 hp @ 6500 rpm
Claimed torque: 390 lb-ft @ 4250 rpm
Actual horsepower: 435 hp 6500 rpm
Actual torque: 404 lb-ft @ 4400 rpm

If you can believe it, that figure puts it well over the top of both the Camaro SS and Challenger SRT-8. For more on our Mustang dyno runs, check out our full dyno report BY CLICKING HERE.

 

Read my post on the torque curve of the 5.4L. The difference is only what Ford rates. The elevation was so high for the dyno testing on the 5.4L, it took about 45 HP and Torque away when compared to sea level.

The differences eveyone claims are inaccurate because no one took the time to make the correction factor for a more apples to apples comparison.

When using a 3% correction factor for every 1000' of elevation, the torque output of the 5.4L comes up to about 300 lbs where the 5.0L peaky torque output is 325 lbs. At 2600 rpms the 5.4L puts out 98% of it's max torque where the 5.0L only puts out ~85%. So the 5.4L will have more torque output at lower rpms.

 

That could be one of the reasons why the Mustang eats the,Craparo and Challenger

 

Some 5.4L-3V owner's will never accept a 5.0L bettering their truck. They can't even accept a 5.0L bettering a Chevy or Dodge. It's a great powertrain combination in a fantastic F150.

 

This makes complete sense and isn't that hard to believe.

 

Head to head, is the 5.0 better performing than the 5.4? Maybe, maybe not...they are both fine powerplants. But the 5.0 is definitely a new milestone for Ford. Why? Look at the efficiency of this engine without forced induction (power per cubic inch). Its only a 5 litre engine guys, producing almost 400 ft lbs of torque...and in the mustang it was tested to make 435 crank horsepower from the factory. Thats absolutely ridiculous for the displacement of the engine and being naturally aspirated. Its making as much or more power than the competitions' engines that are almost a litre larger in displacement. Imagine what a 5.4 would do with this kind of efficiency...

 

Those tow numbers make sense. There is a ton more power in the higher rpms of the 5.0L than the 5.4

They are especially impressive compared to the competitions offerings.

 

The Ford is quicker than the Dodge due to the much lower 1st through 3rd gear. That is it.

Now try steady state towing at 2,500 rpm where the Hemi puts out a lot more torque than the 5.0 and watch the 5.0 fall behind until it downshifts.

Not bashing the Ford as my 5.0 will be here in about three weeks, just pointing out the facts.

Greg

 

Ya but you need to factor in the drive train too. it all depends how the drive train uses the available hp and torque at any given rpm.Hp and torque are no good if your drive train can't utilize it right.

 

Say what you want about pickuptrucks.com, but I've been reading Mike's articles for years as well as hanging out on the message board over there and his credibility is as good as anybody. I'd gladly take his word over "who wants to buy our 'car of the year' award" Motor Trend or "wouldn't know what a decent truck looks like if it backed over their faces" Car and Driver.

That being said, these trucks would have to be tested back to back to be able to compare numbers.

FWIW, the K&N dyno that everyone quotes as gospel is well known for reading higher than most.

 

Yes same spec trucks one with 5.4L other 5.0L same day,same dyno,same trailer and load.

 

If you believe this to be true, you are either a hemi lover or in denial about Ford's new engine performance. You are not pointing out facts......you are pointing out your opinion.
My opinion is that the hemi doesn't perform that impressive at all when you load it down. And there is a lot of data to back that up. I have significant experience with them as well. The Hemi is not a good torque motor at low rpm either.......it is also considered quite peaky by truck standards.

Also, Who gives a **** if the 5.0 does a quick downshift in the blink of an eye???? We all know it will get better fuel economy than the hemi and it clearly outperforms it when pulling the same weight. There is data to prove this.

 

Yes- Dodge's tranny sucks......like I stated earlier. Sad that they can't space out gears to match a motor in this day and age!

BS - The 5.0 will not fall behind......The ECO and 6.2 will walk away

Show me your facts?.......I showed you that a Hemi with much deeper gears at 3.92 cannot tow 6500lbs as well as a 5.0 with taller gears at 3.73 can to 9000lbs The Dodge is an under-performer!