2013 Ford Mustang Shelby GT500
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2013 Ford Mustang Shelby GT500
Ford Mustang Shelby GT500
The 2013 Ford Mustang Shelby GT500 is about to go where no Mustang has
gone before, with a complete package for everyday drivers and track-day
enthusiasts alike, 662 horsepower and top track speeds of more than 200
mph.
"SVT keeps the Shelby GT500 on the cutting edge of technology and takes muscle car
performance to new heights," said Hermann Salenbauch, director of
Advanced Product Creation. "We encapsulated every aspect of performance
in this car - whether it's 0-60 mph, top speed, racetrack or
quarter-mile times. Beyond that, the daily driver also will find this
car perfectly fits his or her needs."
The 5.8-liter V8 aluminum-block engine produces 662 horsepower and 631
lb.-ft. of torque, making it the highest-horsepower engine ever produced
in North America. Nearly every part of the powertrain has been
optimized for producing the additional horsepower, including a new supercharger,
new cross-drilled block and heads, an all-forged engine rotating
assembly, updated camshaft profiles, upgraded head gaskets, a new carbon fiber driveshaft and upgraded clutch, transmission and axle.
A larger and more efficient supercharger helping flow more air through
the engine is key to producing the 662 horsepower. The new Twin Vortices
Series 2300 blower creates 2.3 liters of displacement and is a unique
design to the 5.8-liter engine.
The entire cooling system has been significantly updated on the new
5.8-liter engine. It now includes a high-capacity cooling fan, fan
shroud with high-speed pressure-relief doors, a more efficient charge
air cooler, a higher-flow intercooler pump and an intercooler heat
exchanger whose volume is increased 36 percent. These components
harmonize to consistently dissipate heat under extreme-use conditions.
"Every change we made is an improvement in horsepower and in airflow,"
said Jeff Albers, SVT Powertrain team leader. "The other changes are
about making sure the parts can withstand the pressures when the engine
is making that power."
The supercharger design includes four lobes with a 160-degree twist and
has a drive ratio that spins 2.64 times faster than the previous model.
The inlet air volume also has been increased 33 percent. Boost has been
increased from 9 to 14 psi.
Other modifications for improved power include an upgraded camshaft profile, similar to the Ford GT.
The cam lift for the intake and exhaust has been increased for improved
airflow. Additionally, the redline is held at 6,250 rpm continuously,
but allows for an over-rev to 7,000 rpm for eight seconds to extend the
time to shift so that acceleration is higher and 0-60 mph and
quarter-mile times can be faster.
The diameter of the bore has been upped from 90.5 to 93.5 millimeters to
increase displacement and the fuel injector flow has been increased
nearly 10 percent to get an equivalent amount of fuel to accompany the
extra air.
Once the engine was able to make the power and pressures were increased,
SVT made changes to ensure the engine was durable under those
conditions. The connecting rods have been redesigned with a tapered,
small end where they attach to the pistons. This improved design
supports the load on the dome of the piston more efficiently.
Cooling fan capacity has been increased and a higher-efficiency
intercooler added to keep the air entering the engine as cool as
possible. An efficient, high-capacity flow pump has been added. These
measures manage temperatures under extreme conditions.
To ensure the coolant flow is well balanced cylinder to cylinder, the
block and heads have been cross-drilled for water to flow through.
A single-piece carbon fiber driveshaft has been upgraded from the
current two-piece steel design, which is lighter and stiffer and offers a
higher torque capacity and improved NVH (noise, vibration and
harshness) qualities.
"With the driveshaft we were able to eliminate a joint and add enough
stiffness and drive capacity to get us to our top speed and handle the
torque," said Jamal Hameedi, SVT chief engineer. "The car makes so much
power and torque that we needed to go through the entire driveline
system to ensure it moves to the wheels in a manageable way."
The clutch has increased torque and rpm capacity and uses a dual-disc
design. The diameter and clamp load have been increased and the
clutch-facing material has been revised for additional resistance to
burst and improved transfer of power.
Another key piece of the driveline, the transmission, offers upgraded
gears, bearings and housing so it can properly manage the torque. The
final drive ratio has been changed to 3.31:1 for optimized overall
vehicle gearing to complement the high-powered torque produced. Every
gear besides fourth has been optimized for competing performance
metrics.
The engine also carries over the use of the state-of-the-art Plasma
Transferred Wire Arc liner coating, a process that applies a 150-micron
composite coating that contains nanoparticles on the internal surfaces
of engine cylinder bores, replacing cast-iron liners typically used in
aluminum engine blocks.
The new engine also continues to be exempt from the gas-guzzler tax,
delivering a projected 15 mpg city, 24 mpg highway. That is 5 mpg better
than the 2012 Chevrolet Camaro ZL1.
Functional, stylish enhancements
Design enhancements for 2013 include all-new signature lighting with two
LED bars that command attention in the front and rear. The rocker
panels running along the car are now body-color, adding a more premium
look. Additionally, the rear end has a new high-gloss black panel
between the taillamps and a diffuser that surrounds a new quad-tip
exhaust.
The 2013 Shelby GT500 offers two new sets of forged-aluminum wheels,
including a unique wheel for cars with the optional packages. The
19-inch front and 20-inch rear wheels are coupled with Goodyear Eagle®
F1 SuperCar G: 2 tires on all configurations.
Freshened with the dark finish and updated spoke designs, the wheels
appear even more sinister and aggressive but offer the benefit of being
extremely lightweight.
To commemorate the 20th anniversary of SVT, badging will be used
throughout the interior and exterior of the car to celebrate the many
years of performance vehicles. The official launch of SVT came during
the 1992 Chicago Auto Show with
the unveiling of the 1993 SVT Mustang Cobra and SVT F-150 Lightning. The
1993 SVT Mustang Cobra offered a 235-horsepower 5.0-liter V8 engine,
showing just how far the products have come over 20 years.
Significant work has been done in aerodynamics to ensure the Shelby
GT500 has proper downforce for performance at all speeds. Using
high-tech computational fluid dynamics (CFD), engineers were able to
determine exactly where the air was going, to optimize cooling. The
result is a car that tracks more securely and feels more planted to the
road at higher speeds.
A new front splitter and black-painted upper and lower grille inserts
that expose the radiator drive the functional style changes to the
Shelby GT500. The exposed radiator helps funnel air and cools the
internals of the vehicle systems. The larger splitter helps create
downforce when the car hits top speeds.
Engineers faced competing goals of top speed, racetrack performance,
cooling and fuel economy, and worked to find a balance that meets all
needs. To reduce lift, the team reworked the front upper and lower
grilles and developed an integrated air dam. In the rear, a high Gurney
flap helps reduce lift.
By reducing drag and creating downforce, the loads and moments on the
front fascia increased. CFD pressure maps indicated how much load would
be put on the front body and helped confirm that plastic wasn't
deforming, the fasteners could handle it, the body structure could
support it and the front end wasn't sagging.
Superior ride
The new Shelby GT500 driving dynamics have been overhauled, now working
in concert with Goodyear tires. New Brembo™ brakes with six-piston
calipers in front and the new wheels also required unique suspension
tuning to ensure everything works harmoniously.
Handling, all AdvanceTrac® The previously available unique traction
control system and electronic stability control settings help drivers
achieve maximum performance whether on the street or the track. settings
and steering assist levels within selectable steering also have been
tuned to account for the updated content on the car.
Both systems can be completely disabled in controlled track situations
where maximum driver skill is utilized, or fully engaged for safety
during normal driving or in less-than-ideal traction conditions.
Intermediate sport mode allows drivers to push their cars hard at the
track without completely disabling the safety systems, permitting more
aggressive driving before the traction control and electronic stability
control systems intervene.
The upgraded Brembo brake system complements the other changes on the
2013 Shelby GT500 for control and fade-free stops in road and race
situations. The new system has 380-millimeter front rotors. The rear
comes with 350-millimeter rotors. Both are larger than the previous
model.
A high-tech, user-friendly launch control system is part of the new
functionality on Shelby GT500. The system lets drivers set the tach
needle to a desired launch rpm depending on the tire temperature, street
surface or other conditions. Floor the throttle and the engine will rev
to the preset rpm until the clutch is released, helping with
acceleration and vehicle control from a standing start.
Going further
Sometimes Ford Shelby GT500 customers want to enjoy their car on surface
streets. Other times they just want to let loose on the track. Two new
optional packages on the 2013 car give them the choice.
"The adjustable dampers let us develop our car on the track without any
compromise," said Kerry Baldori, Ford SVT Global Performance Vehicles
chief engineer. "Before, we had to tune the car with street implications
in mind. Now we can go as extreme as we want on the track setting and
still offer the customer a comfortable ride on the road."
Available as part of the optional Performance Package, the feature is
accessed on the dash with a simple push of a button. Normal mode gives
customers a comfortable ride over road irregularities. Sport mode is all
about performance, delivering improved response time on the track, and
less body roll while cornering and pitch under braking. A Torsen®
limited-slip differential also comes with the Performance Package, which
helps the rear suspension deliver torque and traction under the most
demanding conditions on the track.
The monotube damper is key in giving drivers fade-free performance for
extended hot laps. Typical dampers will fade and soften, so they don't
handle as well - the monotube design prevents that from happening.
SVT worked with Bilstein™ for nearly a year to fine-tune the technology
for Shelby GT500, the first production application of the product in
North America.
The Torsen limited-slip differential with a 2.8:1 torque bias ratio
helps the rear suspension deliver torque and traction under the
demanding conditions encountered on the track. The differential is
instrumental in improving torque bias so that the level of traction is
increased.
Enthusiasts can upgrade their Performance Package with an additional
Track Package for all-out racetrack performance. The option comes with
an external engine oil cooler, rear differential cooler and transmission
cooler for further durability. The cooling package also circulates air
from an area of high-pressure stagnation with a low impact to drag and
lift. The coolers play an essential role in preventing crucial
components from overheating under high-speed conditions.
"The standard cooling systems are more than adequate for spirited
driving, but for avid racers or track-day fans, we've provisioned for an
upgraded cooling package," said Albers. "It will cool the car in almost
any condition and let it live up to its performance capabilities."
SVT engineering focused on making the coupe with the Track Package
completely geared toward racetrack performance. That meant making the
suspension have superior control in high-speed turns and dips.
Information at your fingertips
Key to helping Shelby GT500 customers take advantage of all the
capability is the new productivity screen. The screen offers menu
options, giving the customer important information related to vehicle
performance. The menu is navigated through a five-way control button
located on the steering wheel. The LCD is positioned between the
tachometer and speedometer; the SVT logo greets the customer at key-on.
A dashboard screen provides vehicle status information for important
driving parameters such as launch control, AdvanceTrac, selectable
steering or the Bilstein damper setting. There's also a shift light that
appears as the SVT logo that illuminates and chimes when the rpm shift
is reached.
Also unique to the productivity screen is Track Apps™, which delivers
performance metrics for drivers who want to put their car through its
paces on the track.
An accelerometer shows the g-force the car is pulling from left to
right. Drivers also can track their fastest times with the acceleration
timer screen, which offers options including 0-30 mph, 0-60 mph, 0-100
mph, eighth-mile and quarter-mile. Both an automatic start and countdown
start complete with a drag racing start light are available.
The brake performance screen indicates stopping time and distance for
speeds of 60-0 or 100-0. The view/clear results screen lets drivers take
a look at their top times, including their all-time best. They can also
review their last results and saved results from the acceleration timer
and brake performance screen.
A closer look at the base menu options, each of which can be customized by the customer:
Settings: Drivers are able to
Turn on and set launch control feature
Select Bilstein damper mode
Access AdvanceTrac settings
Set steering feel - sport, standard or comfort
Update MyColor®
Gauge mode: Checking temperature/engine operation
Air-to-fuel ratio
Cylinder head temperature
Inlet air temperature
Oil temperature
Transmission temperature
Trip computer: Counting the miles
Information on two trips available
Trip time and mileage
Gallons of fuel used and miles per gallon
Set oil life percentage
Information: Navigate and view warnings
The system check screen displays information such as oil life, engine hours, engine idle hours and open doors
Warnings, such as "Left door ajar," can be displayed graphically
Fuel economy: Up-to-the-second information
Fuel history can be broken down to three time periods
Five resets are available to track fuel history
Fuel economy displays miles to empty, as well as average and instantaneous miles per gallon
View/clear results
Cluster-specific
The 2013 Shelby GT500 also includes upgraded cluster features to give
drivers even more information. The speedometer is now set to 220 mph and
an over-rev feature allows the engine to operate up to 7,000 rpm for
eight seconds before decreasing back to 6,250 rpm.
Coupled with that feature is a dual-color tachometer that provides amber
warning at redline, when the over-rev feature is engaged. Once the
over-rev times out, the redline returns to red.