GT S197 General Discussion This section is for technical discussions pertaining specifically to the V8 variation of the 2005 and newer Ford Mustang.

what do you think, 2011 or 2013 replacement engine

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Old Jul 30, 2012 | 11:42 AM
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Default what do you think, 2011 or 2013 replacement engine

Well..(Long story short) but I'm getting a new motor for my 2011 GT that is covered under warranty....it threw a barring.

Anyway, here is the question...do you think they will replace it with another 2011 (or 2012) motor...or will it really be a "NEW" motor and I will get a 2013 with the whopping extra 8HP. Of course I'm hoping for a 2013 engine but I have a feeling there is no chance in He** that will happen. And Ill just have to be happy with a 2011 motor

But I'm curious what you guys think....
Old Jul 30, 2012 | 12:02 PM
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IIRC, the 2013 engine itself is no different, only the factory tune is different. So, it matters not if what I recall is true.
Old Jul 30, 2012 | 12:43 PM
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Originally Posted by dcarlinf1
IIRC, the 2013 engine itself is no different, only the factory tune is different. So, it matters not if what I recall is true.
I thought they did something different to the motor itself to gain the extra HP. thats why it wasn't easy for just anybody to grab it. I can't recall what they did differently though.

If it is just a tune...wouldn't anybody with a tuner get that 8HP anyway?
Old Jul 30, 2012 | 01:39 PM
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I thought I saw a post not too long ago where the poster was in a similar situation and Ford installed a 2013 replacement engine in his 2011?
Old Jul 30, 2012 | 01:55 PM
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Originally Posted by Thrashard340
I thought I saw a post not too long ago where the poster was in a similar situation and Ford installed a 2013 replacement engine in his 2011?
That would be sweet. but now I need to confirm that the extra 8HP is motor related or computer related.
Old Jul 30, 2012 | 02:13 PM
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I thought I saw it was motor related.....

When Ford first announced that the 2013 Mustang GT would have an additional eight horsepower, there were many (us included) that surmised the additional ponies were merely due to a rating change to the 5.0L V8 and that the 2011-2012 models were producing just as much power. After all, it's not uncommon for manufacturers to provide different horsepower ratings for vehicles without making any actual changes. Chevrolet revised the Camaro V6′s official rating from 304 to 312 horsepower for the 2011 model year, most likely in an attempt to stay a step ahead of the newly released Mustang V6′s 305 horsepower. The Dodge Viper is another example, when the official output of the 8.3L V10 was changed from 500 to 510 horsepower from 2005 to 2006.
So is the 2013 Mustang GT's power increase in name only? Not so, Ford tells us. The 5.0L V8 has been ever so slightly massaged to actually produce the extra eight horsepower thanks to technology developed from the Boss 302 program. The 2013 Mustang benefits from a phosphorous coating on the pistons as well as the piston rings from the Boss 302′s V8, and powertrain calibration improvements contribute to the increase in power as well.
More than likely most Mustang owners won't be able to tell the difference between 412 and 420 horsepower, but it's still nice to know that there are actual upgrades behind the rating increase.
Old Jul 30, 2012 | 02:24 PM
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Different engine (or slightly modified) in the 2013. No tune change, it's a coating on the pistons and rings like that used on the BOSS. Several other articles elude to this by saying "...increase in HP by way of what they learned on the BOSS motor" but never define what they learned. None elude to a tune.

http://www.edmunds.com/ford/mustang/2013/road-test.html
Old Jul 30, 2012 | 04:34 PM
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Do you mean you spun a bearing? Were you drag racing it with 5w20 oil?
Old Jul 30, 2012 | 06:11 PM
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Eight HP is one of two things: they found that they could "guarantee" more horsepower out of the production engines than they'd counted on, so they didn't change anything but the number. OR they changed the calibration to produce more power.

It's least likely that the changes to the rotating assembly that reduce friction are the cause. The improvement in efficiency, while it's only 2% of the total horsepower, would still have to be the equivalent of one hundred 60 watt light bulbs suddenly being turned off. I just don't see a coating on the pistons making that big a difference, although low-tension piston rings might do it.
Old Jul 30, 2012 | 06:24 PM
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Originally Posted by moosestang
Do you mean you spun a bearing? Were you drag racing it with 5w20 oil?
Maybe a stupid question but, What is wrong with 5w20 oil and drag racing ?



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