707-Horsepower Dodge Challenger SRT Hellcat is most powerful muscle car ever

2015 Dodge Challenger SRT Hellcat is most powerful muscle car ever

The 2015 Dodge Challenger SRT Hellcat, the most powerful muscle car ever, now boasts a fuel-economy rating as compelling as the 707 horses hurrying from its 6.2-liter supercharged HEMI® Hellcat V-8.

Equipped with Chrysler Group’s segment-exclusive TorqueFlite eight-speed automatic transmission, the new Challenger SRT Hellcat has earned a highway fuel-economy rating of 22 miles per gallon (mpg) from the U.S. Environmental Protection Agency (EPA).

The Challenger SRT Hellcat carves a unique place for itself in the lofty world of high-performance driving. Consider the price, output and 2015 EPA highway fuel-economy ratings of the following:

• Lamborghini Aventador Roadster – $425,845; 700 horsepower; 18 mpg
• Aston Marton Vanquish – $287,820; 576 horsepower; 18 mpg
• Mercedes-Benz SLS AMG GT – $221,580; 583 horsepower; 19 mpg

The supercharged 6.2-liter HEMI Hellcat benefits from content that is 91 percent new, compared with its 6.4-liter SRT cousin, better known as the 392 HEMI.

Engineered in-house, the Hellcat engine is designed for optimum durability in the face of the enormous loads that accompany its prodigious power. Its forged-steel crankshaft has induction-hardened bearing surfaces that contribute to its capacity to withstand firing pressures of 1,595 psi (110 bar) – the equivalent of five sedans standing on each piston, every two revolutions.

I also recommend this article  All-new 2015 Honda CR-V

The HEMI Hellcat further benefits from premium-grade, heat-treated aluminum-alloy cylinder heads that are optimized for thermal conductivity. These are topped by a twin-screw 2,380-cc/rev supercharger that features integral charge coolers and an integrated electronic bypass to regulate boost pressure to a maximum of 80 kPa (11.6 psi).

A separate low-temperature cooling circuit with two air/coolant heat exchangers integrated into the supercharger housing keeps air temperatures below 140 degrees Fahrenheit (60 degrees Celsius), while enabling air flow of up to 30,000 liters per minute.

So effective is this feature that engine power will not be de-rated due to cooling demands, even after 20 minutes of hard driving on a road course at an ambient temperature of 100 degrees Fahrenheit (37 degrees Celsius).

The HEMI Hellcat does not lack for style, either. Its die-cast aluminum rocker covers echo the block’s Street HEMI Orange motif.

The car’s new TorqueFlite eight-speed automatic transmission boasts maximum engine-torque capacity that is 30 percent greater than any eight-speed previously offered by Chrysler Group. To ensure its responsiveness matches the demanding expectations of SRT customers, the transmission features one additional pinion gear in each of the 1st and 3rd gear sets, and five more clutch-pack disks – two in clutch E and one each in clutches A, C and D.

I also recommend this article  Groupe Renault - Groupe Renault: 2016 financial results

The defining benefit of the gearbox is its 7.03 ratio spread, which enables the powerful HEMI Hellcat to operate in its most efficient mode, more frequently.

Not to be outdone, the Challenger SRT Hellcat earns an EPA highway fuel-economy 21 mpg when equipped with its new-for-2015 six-speed manual transmission. The sporty gearbox boasts an internal cooling pump and external, vehicle-mounted oil cooler and its beefier 258-mm heavy-duty clutch affords easy access to HEMI Hellcat’s prodigious power.

Source: Dodge & Chrysler Group.

(Visited 28 times, 1 visits today)



Download the Car Rescue Book







Browse our latest car database to discover more cars                    

Discover more automotive news & videos


Articles from the main page



Browse the latest new cars


Discover the latest new cars

33,16,0,100,2
600,500,60,0,0,5000,250,0
90,300,0,50,12,25,60,2,70,12,1,30,2,0,1,0
The world’s most popular roadster, the Mazda MX-5, has a whole new look. After 25 years and over 947,00 sales worldwide, the new fourth-generation 2014 Mazda MX-5 (known as the Mazda Miata in the US) has finally been revealed. The MX-5 is one of Mazda’s most iconic models
All-new Mazda MX-5 Roaster
The centrepiece of the Mercedes-AMG GT, the new 4.0-litre V8 biturbo, responds instantly with extreme power right from low revs and delivers outstanding performance.
The new Mercedes-AMG GT
The Alfa Romeo has become synonymous with style. Many people crave the look of an Alfa. However, this car is not a one trick pony. It performs as well as it looks. For many, they feel that they have to compromise style over speed. With an Alfa, this is simply not the case.
The Classic Alfa Romeo Montreal: Is it Worth the Hype?


Sport car of the month


Discover All-new Jaguar F-Type Coupe & R



ENTERTAINMENT

All-new Jaguar F-Type Coupe & R



5-liter supercharged V8 engine and will reach 60 mph in 4.0 seconds, and a top speed of 186 mph (electronically limited)2. The F-TYPE S Coupe and F-TYPE Coupe are powered by 3-liter supercharged V6 engines in 380hp and 340hp forms respectively, giving 0-60 mph in 4.8/5.1 seconds and top speeds of 171/161 mph2.

The F-TYPE Coupe visual message is defined by three key ‘heart lines’, that visual message beginning with the formidable grille. It is from the twin ‘shark gill’ openings that sit either side of the grille that the essential first heart line – which mirrors the design of the F-TYPE Convertible – flows and begins to take shape. Running up through the headlamp, and accentuated by the LED ‘J blade’ signature running lamps, the line then arcs up over the front wheel arch before dropping elegantly as it runs through the door, washing out into the muscular rear haunch.

The second heart line begins at the rear edge of the door, swelling outwards and upwards to create a visually strong wheel arch, emphasizing the car’s rear-wheel drive layout, before dropping vertically through the tail lamp ...





Auto Mechanic Advice


Advice from experienced mechanics from several fields!






Auto Speed Market is a car blog with the latest automotive, F1 and car news. Auto Speed Market is trying to provide extra
information to car enthusiasts, will be presenting new cars and concepts, prices and statistics of the automotive world.
Auto Speed Market also offer tips for buying a new car or second hand vehicle.


To reach us, please complete the form contact us.