By on December 29, 2017


Two weeks ago, an image of a supercharger embossed with the iconic Shelby snake made its way onto the internet, followed by another claiming to depict the biggest set of rotors ever affixed to a factory Mustang.

The GT500 rumor mill went ballistic.

Now, we have official — albeit inadvertent — acknowledgment from Ford that a new Shelby GT500 is incoming, courtesy of the company’s OEM service portal, which revealed wiring diagrams and a slew of service procedures which incidentally confirm several details about the upcoming Über Mustang.

The engine shown in the wiring diagrams looks identical to the leaked image of the supercharged 5.2-liter V8, right down to coiled cobra living on the blower, and it also gives us a small taste of what to expect from the GT500 when it does eventually emerge from the depths of Dearborn.

(Editor’s note: From time to time, we will bring you content from our sister sites if we feel that they’re in the interest of TTAC readership, and this story, from Vertical Scope’s own Michael Accardi, fits the bill. — Tim H.)

Like the flat-plane Voodoo engine in the GT350, it would appear the blown 5.2-liter will remain port-injected as there doesn’t seem to be a provision for a high-pressure fuel pump to run direct injection, as seen on Ford’s revised-for-2018 Coyote 5.0-liter V8. Rumor has it the GT500’s supercharger will be a new upside-down Roots-style unit that could displace something in the neighborhood of 2.6 liters, if that’s the case, we could see a force-fed 5.2 kicking out north of 750 horsepower.

Around the back, there also looks to be a flexplate in place of a flywheel, indicating the GT500 will likely be the next recipient of the new 10R90 10-speed automatic Ford co-developed with General Motors, which has already been put to high-speed use in the 2017 Camaro ZL1.

Regardless of final output, the GT500 is going to be obscenely fast, how fast, well at least 200 mph fast if the speedometer verification procedure is any indication. Plus there’s going to be a set of gargantuan carbon-ceramic brakes, which we assume will be standard kit based on the car’s ceramic-brake-wear warning system.

Other details confirmed include the use of damper control, likely in the form of Magnetic Ride Control like the GT350, additionally, the GT500’s powertrain selector will allegedly omit Track and Snow/Wet mode in favor of bespoke Drag Strip setting and Launch Control functions.

Basically, Ford’s building a big bruiser of a Hellcat hunter that should also be capable of cornering when it gets to the bendy bits.

The information portal also clued us into a few of the GT500’s more esoterically nerdy details, like the addition of a new Head-Up Display system, which according to a Network Message Chart, will probably be used primarily as a shift light, along with a new oil-temperature gauge. Thanks to a tachometer troubleshooting procedure, we also know the GT500 will idle at 900 revolutions per minute, compared to the GT’s 800 rpm.

Lastly, Ford’s updated VIN decoder indicates the Mustang will continue to only offer three engine choices. Sadly, the addition of the supercharged GT500 to the repertoire will cost us the flat-plane crank and mellifluous mechanical melody made by the GT350’s naturally aspirated 5.2-liter V8.

It’s unclear when Ford is planning to unveil its next-generation Shelby Mustang, but based on the amount of information readily available and Ford’s planned off-site event at company HQ just prior to the 2018 North American International Auto Show in Detroit, we could be see the GT500 unveiled in only a few short weeks.

[Images: Ford Service Portal]

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22 Comments on “Ford Inadvertently Confirms the GT500’s 200 MPH Top Speed, Supercharged V8, and Carbon Ceramic Brakes...”

  • avatar
    Jeremiah Mckenna

    So if Ford has this GT500 V8 with a SC and 750 HP output, and so much weight and fuel consumption, why don’t they use the same set up that they have in the Ford GT, which uses the 3.5l TT V6 which produces 647 HP and saves a ton of weight and gets better MPG? They did it with the Raptor and people are still buying them.

    • 0 avatar

      Because the hardcore “Mustang” crowd is like the “Harley Guys” – they don’t like change. Dropping the 8 cyl would keep away the guys who will buy one to put in their private warehouse next to the “one high performance model of every generation” Mustangs they already own.

      • 0 avatar

        “Because the hardcore “Mustang” crowd is like the “Harley Guys” – they don’t like change.”

        Weren’t “F-150 guys” like “Harley Guys” too?

        My take is that the GT guys are more of the V-8 only crowd, and that the expensive garage queen buyers are more adaptable.

        While I agree that there would initially be a Hue and Cry from fanbois, they’d change their tune if the performance was there.

      • 0 avatar

        Or you know Ford has a great engine cost effective engine in the 5.2 (current champ I’m aware of on stock internals is flirting with 1300 horsepower and they regularly pump out 700-900 supercharged horsepower on pump gas with a 12:1 compression ratio for the less crazy horsepower addicts) really a matter I think of not reinventing the wheel plus as you note the Mustang faithful tend to be traditionalist as well as what the general public perceives as the natural order of things.

    • 0 avatar

      750 > 647 HP
      V8 > V6

      Plus hey why not? Its the ultimate Mustang… well until the next special edition model arrives next year.

    • 0 avatar

      Also forgot to add in my previous comment that the Ford GT’s fuel mileage sucks. In order to reduce turbo lag and makes good power (the GT’s V6 doesn’t use any real “EcoBoost” strategies to boost responsiveness. Instead the GT runs a little rich on the exhaust stroke to keep the turbochargers spooled (I’m guessing ahead of the turbochargers the fuel is essentially still combusting in the exhaust manifold??) as opposed to small runner and plenum volumes which make for a peppy engine but kill big power numbers since they cannot adequately flow air introducing problems not only with an impediment to air flow but uselessly stretching the intake charge and inadvertently heating it.

      Plus you have to take into consideration the entire size of the package. While I’m not sure with a 60 degree V6 if there is enough room for a brace of turbos hanging practically off the exhaust ports for best response (am totally sure a hot-vee configuration is out of the question) but if it would suffer from space issues like a TT V8 your only options for a conventional engine (remember no hot-vee) would be to shove them down low and to the back or forward in between the engine andcooling and AC modules.

      Both options are fine for the aftermarket crowd since lag isnt a big issue nor is 200,000 mile reliability.

    • 0 avatar

      @Jeremiah – Yeah Ford doesn’t want your business if you demand a V8 Raptor or FGT, and I’m sure they have good reasons for that, except the Mustang has plenty of, or too much V8 competition in its class.

      There’s no doubt many like us that would gladly take the supercharged V8 “downgrade” even if it means turning slightly slower laps at Laguna Seca, plus slightly worse fuel economy. But from what it sounds, the 3.5 EcoBoost likely isn’t as fuel efficient or as light weight as you’re thinking, even when not putting out 600+ hp.

    • 0 avatar

      I imagine Ford has hired some pretty sharp Ivy league graduates to figure out if there’s a justifiable business case for everything they sell, and Chrysler has proven there is.

  • avatar

    I’m disappointed that there won’t be a plug-in hybrid version to appeal to those Prius owners looking to take a step up in power while maintaining their planet saving ways.

    • 0 avatar
      White Shadow

      Nah, those guys can just get a Tesla that will leave the new GT500 sucking it’s dust for at least a 1/4 mile. Or if top speed is the game, they might have to wait afor the Tesla Roadster which is supposed to reach 250+ mph, but is widely speculated to be targeting 300 mph.

      • 0 avatar

        The other speculation is that Dear Leader The Right Reverend Saint Elon Musk The First won’t even get around to making the new Tesla roadster; he just needs lots of big deposits to keep paying current salaries. That it’s just another con on the Road to Immortality. So says the Autoextremist.

        Myself, I’d expect a Sporting School Bus next, or maybe a Rocket City Bus/Highway Commander coach with 2,000 miles range, after the semi doesn’t quite make it to production and while the Model 3 is still sucking maashed bananas production-wise. After that a Road Roller EV where extra battery weight is welcome.

        America is the best place ever for hucksters to thrive and to be believed by the logic-deprived looking for hope. Pretty soon the Leader believes his con himself, while cotton-batting-for-brains-equipped non-technical “business” columnists proclaim inanities. It’s all really quite delicious to follow when one chooses to forget how thick the copper cables have to be to carry 1,000 amps at 1,000 volts for the minimum 1MW or 1300 horsepower needed for 300 mph. Yus, some people believe in the Magic Fairy.

        • 0 avatar
          White Shadow

          So let’s discuss the here and now. We can leave the speculation for the magic fairies. What has he done so far? Well, he built a family car that can out-accelerate any Mustang out of the Ford showroom. Easily. On battery power. For that reason alone, I guess I just might believe in magic. The Roadster will most likely happen an I believe that it just might be from zero to sixty in under two seconds. Should be fun to see what happens….

      • 0 avatar

        Yea, but the Tesla needs to wait up to 45 minutes for the batteries to come up to temperature. Then after it hits 250mph (I need to see that to believe it, EVs aren’t know for their high end), it needs to be benched to recharge.

        No, I’m not a Tesla hater. I like what Tesla is doing. It’s just that no one solution does everything.

        Speaking of which, I was driving during yet another slippery Minnesota day today. Because of the conditions, I started from a stop in 2nd gear and would upshift quickly. I wanted to minimize wheel torque, so I could minimize wheel spin. While doing this, I was thinking this would be very difficult with an EV and all it’s “instant torque”.

        • 0 avatar
          Tele Vision

          There’s likely a button for that in an EV. That said I’d still rather start in second or third in my Caddy than push a button that gently applies the brakes to modulate the silent torque from a battery.

    • 0 avatar

      2020 Cars are supposed to have a hybrid option at least. Ford is claiming four cylinder frugality with V8 acceleration and if they aren’t just pissing in the wind so to speak then the hybrid car should be capable of sub 4 second 0-60 sprints and low 12 or high 11 quarter mile times (since that is what the 2018 car in A10 for is capable of).

    • 0 avatar

      A Hybrid Mustang is coming, and while I’m sure it’ll be much quicker than the Prius, I wouldn’t bet on 700+ hp and 200 MPH.

  • avatar

    200 mph Mustangs? Those will be a big hit when they pull into traffic when leaving Cars & Coffee events.

    • 0 avatar

      C&C organizers are starting to crack down on that it seems. A popular deterrent is charging a nominal fee to enter to help pay for police at the event in addition some C&C’s have a report form that can be used in conjunction with media to help out with communication with the police as well as kicking troublemakers out if they show up again.

  • avatar

    The proper spelling is “über”, not “ubër”.

    That is all.

  • avatar

    Okay. This will open a can of worms…I’ll put my asbestos smoking-jacket on.

    What NEED does anyone have for a 200-mph street car/

    As a rule, I’m opposed to Nanny-State-ism. I believe the customer is king; and government is supposed to be the people’s SERVANT, not their MASTER.

    But what would this kind of potential offer buyers, beyond tempting them to outrun police…which may or may not be justified; but the odds are tremendous that innocent travelers die in the process.

    That, or equally stupid speed displays – where someone might inadvertantly stumble into, coming out of a side street, or which might kill the participants, as a dog or deer or moose wanders onto the pavement.

    A few years ago I had a liter-bike…a Honda CB1100. By, I was told, EC regulations, the engine was speed-governed to 112 mph. At great expense and some compromise to engine performance, modded chips or a flash on the spark ECU (I forget which) could bypass that.

    Why, in the name of life and limb, would someone want to? If I”m going to rob a bank; and need a getaway car…and I’m looking at a $9000 Honda motorcycle or a $45,000 Ford street-racer…maybe I better re-evaluate my priorities.

    This kind of speed potential just tempts the stupids and the Watch-This-Hold-My-Beer crowd, into doing something lethally stupid.

    • 0 avatar

      Or you could go to the track. there are now a plethora of trackday options most every weekend.

      The future of performace cars is cars that are fun at sane street speeds(ie alomost non of the current hypercars) and also really good/durable on track(ie alomst none of the current hypercars), while being somewhat affordable, see mustang Gt350, chev corvette, porche caymans Gt3’s etc, some camaros, miata.

      Literaly 10’s of thousands of these cars get bought and go to the track every year.

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