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Old 06-02-2015, 03:15 PM   #29
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Here is the official press release

OFFICIAL FORD PRESS RELEASE:

Quote:
526-Horsepower Ford Shelby GT350 Mustang Exceeds 100 Horsepower Per Liter with New 5.2-Liter Flat-Plane V8

  • At 102 horsepower per liter, the all-new 5.2-liter V8 for Shelby GT350 Mustang and Shelby GT350R Mustang is both the most power-dense and the most powerful naturally aspirated road-going engine in Ford history
  • ·All-new Ford 5.2-liter flat-plane crankshaft V8 – an engine unique to Shelby GT350 and Shelby GT350R – produces 526 horsepower and 429 lb.-ft. of torque
  • With a redline of 8,250 rpm, the all-new 5.2-liter engine is the highest-revving production V8 in Ford history
Its crankshaft may be flat, but its power output is anything but “plane.”
Ford announced today the most powerful naturally aspirated road-going engine in its history. The all-new Ford 5.2-liter flat-plane crankshaft V8 will produce 526 horsepower and 429 lb.-ft. of torque in Shelby GT350 Mustang and Shelby GT350R Mustang – an engine unique to the two models set to go on sale this fall.

“The Shelby GT350 program began with a clear objective – create the most balanced, nimble and exhilarating production Mustang yet,” said Jamal Hameedi, Ford Performance chief engineer. “Every change we made to this car was driven by the functional requirements of a powerful, responsive powerplant. The high-revving, naturally aspirated 5.2-liter flat-plane V8 delivers on every target we set – high horsepower, broad torque curve, aggressive throttle response and light weight.”

The all-new 5.2-liter V8 is not only Ford’s most powerful naturally aspirated engine ever, but also its most efficient in terms of specific output. Without turbocharging or supercharging, the flat-plane crankshaft V8 produces 102 horsepower per liter of displacement. The new engine is also the highest-revving V8 in Ford history – with a redline of 8,250 rpm.

Unlike traditional V8 engines, the all-new 5.2-liter uses a flat-plane crankshaft more typically found in a Ferrari sports car or in racing applications. The design of this new engine for the Shelby GT350 was optimized using computer-aided engineering and fully digital performance simulations. Millions of intake, cam and exhaust configurations were iterated before arriving at the optimal combination.

Better engine breathing delivers optimal power


Traditional cross-plane crankshaft V8 engines attach the piston-carrying connecting rods to the crankshaft at 90-degree intervals, creating a “cross” of counterweights when viewed down the axis of the crankshaft. In the all-new Ford 5.2-liter V8, the connecting rods attach to the flat-plane crankshaft at aligned 180-degree intervals – creating what looks like a flat line of counterweights when viewed down the axis of the crankshaft.
Beyond a change in the characteristic sound of an American V8, the flat-plane crankshaft helps improve cylinder exhaust-pulse separation by allowing a firing order that alternates ignition events between the V8’s two cylinder banks. This can vastly improve engine breathing, and subsequently allow the engine to make more power.

The result in the new 5.2-liter V8 – in addition to a uniquely exotic, delicious engine note – is 526 horsepower at 7,500 rpm and 429 lb.-ft. of torque at 4,750 rpm. Even more impressive is the track-tuned flexibility of the engine’s exceptionally wide powerband. It produces 90 percent of peak torque from approximately 3,450 rpm through 7,000 rpm, and features a racetrack-friendly spread of nearly 3,000 rpm between its torque and horsepower peaks.

In both Shelby GT350 and Shelby GT350R, the all-new 5.2-liter will be paired with a six-speed manual transmission as its only gearbox option. The Tremec TR-3160 six-speed manual is specifically engineered for less mass and high-rpm application in the new Shelby Mustangs. The six-speed features a lightweight, die-cast aluminum case and clutch housing for increased overall powertrain stiffness. Gear cross-sections, the dual-mass flywheel and dual-disc clutch are all optimized for an overall reduction in inertia and weight.

Other aspects of the new 5.2-liter V8 (actual displacement is 5,163 cubic centimeters) include a slightly oversquare bore and stroke of 94x93 millimeters, and a performance-enhancing 12.0:1 compression ratio. Computer numerical control-machined cylinder heads house camshafts that develop a massive 14 millimeters of lift for both the hollow-stem intake valves and sodium-filled exhaust valves. A single, fast-acting 87-millimeter throttle body – the largest ever used for a Ford engine – feeds air to the engine, allowing for a simpler, lighter intake.

Further reducing engine weight is a unique new aluminum engine block featuring Ford’s patented plasma transferred wire arc cylinder-liner technology. This process eliminates typical heavy iron cylinder liners with an electroplate coating. The forged-steel flat-plane crankshaft is “gun drilled” to reduce total engine weight and to improve bay-to-bay cylinder breathing. A lightweight, high-capacity composite oil pan contains baffling designed for sustained high-speed cornering and hard braking.

“A new Mustang as exceptional as the Shelby GT350 deserves an equally extraordinary engine,” said Dave Pericak, director, Ford Performance. “The all-new naturally aspirated 5.2-liter V8 perfectly fits the balanced dynamics of the Shelby GT350, and we believe this new engine will become a performance legend.”

https://media.ford.com/content/fordm...0-mustang.html
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Old 06-02-2015, 03:15 PM   #30
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Originally Posted by Thor142 View Post
The GT350R has a lap time of 7:32.19 posted on the rings official web site. That's only 5 sec faster than the outgoing Z28. The Camaro team should be able to catch it with a new Z. Probably not with the SS though.
Yeah, and the new Z06 ran sub 7 minutes.

Believe it when the company making the car announces it. If horsepowerkings report it, put your waders on.
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Old 06-02-2015, 03:19 PM   #31
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Didn't ford say they would never time their cars on the nurburgring because it isn't regulated/standardized?
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Old 06-02-2015, 03:21 PM   #32
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Originally Posted by ULTRAZLS1 View Post
That's a rumor.

The z28 was in the rain.

Gm has stated the car runs/is capable of a 7:31.... Even before the 7:32 gt350 rumor came to be.

But either way that's different drivers different day halfway across the world.

Waiting for a same day same track same driver comparison to z28. They will need the r version no doubt.


As for what's next? The bar wasn't set very highly terms of hp and tq. Plenty of choices. Even a hopped up lt1 in a lighter chassis would work.
Unfortunately that probably won't happen. I doubt we'll get a head to head with an outgoing model year against the new GT350. Anyway it doesn't matter. It's only a few seconds and I'm sure the Camaro team has something up their sleeve for the new Z.
On a side note GM saying the Z 28 is "capable" of a 7:31 is about as good as the GT350 ring time posted. No proof means a rumor. Show us.
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Old 06-02-2015, 03:22 PM   #33
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All I saw was "5 seconds faster than the Z28". Thats all I needed to see for the BS flag to come out.
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Old 06-02-2015, 03:31 PM   #34
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Originally Posted by Thor142 View Post
The GT350R has a lap time of 7:32.19 posted on the rings official web site. That's only 5 sec faster than the outgoing Z28. The Camaro team should be able to catch it with a new Z. Probably not with the SS though.
Al Openheisser (?) has said the Z/28 did it in 7:31.xx. Holds more water than the GT350R's internet rumor of 7:32, which is still slower.
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Old 06-02-2015, 03:33 PM   #35
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Originally Posted by LesserO2Evils View Post
All I saw was "5 seconds faster than the Z28". Thats all I needed to see for the BS flag to come out.
I hope it's real. It's awesome to see our American pony cars up there with all the euro super cars. I don't care which of the big 3 made it. When one company raises the bar it's good for everyone.
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Old 06-02-2015, 03:40 PM   #36
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Originally Posted by Thor142 View Post
Unfortunately that probably won't happen. I doubt we'll get a head to head with an outgoing model year against the new GT350. Anyway it doesn't matter. It's only a few seconds and I'm sure the Camaro team has something up their sleeve for the new Z.
On a side note GM saying the Z 28 is "capable" of a 7:31 is about as good as the GT350 ring time posted. No proof means a rumor. Show us.
But at least the z28 rumor came from somewhere halfway credible. Google it. I have no video. The 7:31 statement was made before anything about the gt350 was mentioned... So it wasn't a bs response to a gt350r 7:32 in that regard... Not saying it's totally true either...

But essentially your right... That's why I said let's test them side by side... I don't buy rumors either. But if your going to use one so will I.

Lol at thinking they won't be testing it against the z28.
It will also still technically be same model year. They making 130 of them (2015 gt350) before the years out...and I think only 30 of them will be r model z28 contenders...

And yes... Ford has stated they DO NOT release ringtimes because the standards aren't set etc.... Understandable... But also convenient if your behind.
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Old 06-02-2015, 03:44 PM   #37
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Originally Posted by ZL1 Spoked View Post
It had to beat the z28 damn and for 30k less
You must really want a Z/28 or really had your feelings hurt with the release of the Z/28. Since January more then 90 percent of your posts have been in this forum and negative.
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Old 06-02-2015, 03:51 PM   #38
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I guess i've just had too many LS engines in a row but why is the torque so low? It's got less TQ than the LT1.

GT350 sounds incredible though. If I end up in the market for a 60k car i'd definitely test one.
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Old 06-02-2015, 03:51 PM   #39
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Originally Posted by ULTRAZLS1 View Post
But at least the z28 rumor came from somewhere halfway credible. Google it. I have no video. The 7:31 statement was made before anything about the gt350 was mentioned... So it wasn't a bs response to a gt350r 7:32 in that regard... Not saying it's totally true either...

But essentially your right... That's why I said let's test them side by side... I don't buy rumors either. But if your going to use one so will I.

Lol at thinking they won't be testing it against the z28.
It will also still technically be same model year. They are squeezing in 130 of them before the years out...and I think only 30 of them will be r model z28 contenders...

And yes... Ford has stated they DO NOT release ringtimes because the standards aren't set etc.... Understandable... But also convenient if your behind.
If Ford really wont release ring times that's dumb. Even if it doesn't beat the Chevy counterpart I'm sure people (like me) would be interested in the time anyway and what cars it DID edge out.
We'll see about an official side by side. One of us will LOL at the other in the end for sure I want to be wrong on this one. It would be awesome to see. It would certainly leave the fan boys of one camp or another squaking. Which makes for entertaining reading.
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Old 06-02-2015, 03:52 PM   #40
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You must really want a Z/28 or really had your feelings hurt with the release of the Z/28. Since January more then 90 percent of your posts have been in this forum and negative.
I dont see how his post is negative IMHO.
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Old 06-02-2015, 03:54 PM   #41
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lol this is the truth of the internet. I look at it as definitely being possible, but until released by Ford....all is rumor.
And that will never happen. Better or worse, Ford does not publish 'Ring times. Likely because there is no such thing as an "official" 'Ring time. The rain thing with the Z does not matter, as that is the time GM gave us. If they had a better recorded time, they would have shared it, not just calculated it from telemetry data.
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Old 06-02-2015, 03:56 PM   #42
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I guess i've just had too many LS engines in a row but why is the torque so low? It's got less TQ than the LT1.

GT350 sounds incredible though. If I end up in the market for a 60k car i'd definitely test one.
429 ft/lbs is low for a NA 5.2L V8?
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