I saw this post in the Boss section and thought I would pass it on here.

http://autospotters.wordpress.com/20...80%93-finally/

 

Excellent article. Thanks for sharing!

 

Doesn't anyone check their facts when they write stuff like this?

His Ford HP numbers were wrong on both engines quoted.

Got the chebby and dodge numbers right though.

 

What was wrong on the numbers? He put up a dyno chart.....

 

Quoted the factory ratings as 314 and 414 for 2010 and 2011 instead of 315 and 412 that they actually are.

 

Ok, off by one or two horsepowers. Hardly anything to complain about not being fact checked. Good post, I say.

 

Jeez, the 15% internet correction factor needs to have a stake driven through it and crucified up on a cross left to hang in the hotest driest spot on the earth so it can suffer the rightful death it so richly deserves.

I really wish Ford would release some effciency data on the new drivetrain!

While prohibitively expensive, it would be nice to actually see somebody pull a 5.0 from the car after running it on a chassis dyno and then hook it up to an engine dyno with corrected data to see how things shake out. (in as installed condition meaning stock computer and flow path through out. Typically magazines that do this type of thing install some dyno headers and exhaust along with a modified intake path using a controller thats been set for max power and call it "stock").

I'd be willing to bet some real money that the powertrain is only absorbing down around 10-12% maybe.

Nitpick aside cool article.

 

You're right someone should do an engine dyno. But even at 10-12%, doesn't that put the hp still above the 412 quoted specs?

 

Ford racing took a 5.0 to Horsepower TV and they put it on the engine dyno. It did have some experimental headers and what looked to be high flow cats. They might have put the ford racing tune on it, but it had a stock intake manifold, intake, and throttle body. It made 468HP @ 7300rpm. I wish they had tested it 100% stock.

 

Hard to see how those mods would make any more than 20hp, though. Those numbers corroborate the 15% in my opinion.

 

And this also corroborates--they use a 11-13% differential.
http://blogs.insideline.com/straight...ang-gt-50.html

 

the real output of every 2011gt is 416hp SAE. 412 is the 1 percent allowed. its not underrated or overrated. that number is a random new engine off the assembly line.

my car didnt dyno 395 stock. it dynos 398 with mods. that car has an aggressive non production tune on it.

the factory stock tune is to allow warranty issues to be minimized. clutch failures, rear end failures, and transmission failures.

 

yep, but I would really be surprised to see powertrain absorbtion dip into single digit numbers.

 

Waitaminute. You're saying that your car's tune makes a ton of power, and because you dynoed at 398, this must mean that the stock value is a lot lower? I've yet to see any street-vehicle computer tune that alone will give you more than 10-20hp (real numbers). Where the heck did you get that they intentionally reduced the power output on the 5.0 in order to reduce wear o the drivetrain??? If anything, the evidence appears tomsuggest that it was just the opposite--

 

The article also says....
I'm pretty sure the 94/95 said GT/5.0 on the side although it was a different logo than the plain "5.0" emblem. I could be wrong though??

 

Well I looked through some pics and it looks like the early sn95's had a plain GT/mustang emblem and then they went to the GT/4.6 emblem....Sorry got them mixed up.

 

Yeah, I don't think I ever saw an sn95 with a 5.0 badge....shame, because they had them!

 

it was on the intake manifold.

side badge only said GT

 

Guys did an engine dyno and got 465hp! Could this be true?
I don't know what to believe, but every single dyno I see seems to point to 430-450hp.

http://www.onlymustangfords.com/coyo...dyno-test.html

 

See what I mean, they dyno'd the motor, but did they run the full accesory drive? Did they run dyno headers? If they did use the factory headers, did they include the cats? Did they use the factory airbox? Did they run a stock tune (along with rev limit), did they observe the same test conditions Ford did (SAE whatever whatever procedure), what sort of fuel did they use?

All of these niggling little details are important when trying to get an idea of what a factory installed engine can do. That test could have been an idealized situation (much like the glamor ratings produced by manufacturers in the 60's) meant to show off what an unrestrained and maximized stock powerplant can do.