Posts Tagged ‘Hemi’

A few days ago, was unveiled the Dodge Challenger SRT Hellcat world’s most powerful muscle car, and the fastest ever built. But Dodge wasn’t satisfied with that, it went greedy to beat another impressive record, held by Mercedes Benz for years, the world most powerful sedan. Dodge unveiled yesterday the car that dethroned the S65 AMG, its Dodge Charger Hellcat SRT. Here is the official video by Dodge

Powered by the same Hemi Hellcat engine, a supercharged 6.2L V8 powertrain that produces the same monstrous 707 bhp and 881 Nm of torque, the new Dodge is impressive. In fact it goes from stand still to 100 km/h in just 3.6 seconds, 0.2 faster than the coupe Challenger, and the almost same time for a Ferrari F12 Berlinetta in the quarter mile : 11.0 seconds (the test was made on street tires, so it could have been better if they tested the car using race tires). Engine performance make it not only the most powerful sedan ever built and one of the fastest to rival with S65 AMG, Audi S8, BMW 760 and the 5 series, it has the most powerful torque couple produced by a muscle car. It is fitted with an automatic 8-speed gearbox that channels all power to the rear wheels, and has an exhilarating gear change time: just 0.160 seconds. Another record for Dodge, the car goes from 0 to 100 mph in 13 seconds and tops 328 km/h. It is the only production sedan that tops 320 km/h, besides of the Bentley Flying Spur, and the S65 AMG Brabus. All the others are electronically limited to 250 or 260.

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On the outside, the car is inspired from the 1969 Dodge Charger. And to make the car have its own looks, engineers have redesigned body panels, fitted it with the following : all new front bumper, a new grill, new modified LED headlamps, a new bonnet, having now new air traps: one big central and two smaller on the sides, back air extractors, and a new rear bumper. The front and rear bumper impose higher aerodynamic performances, and give higher downforce when the car reaches high speeds.

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On the inside, the new Hellcat does not differ much from the regular Charger, it does not present many luxurious features: Two sport front heated seats, and heated rear bench, regular not sport. A new feature is the Uconnect system that manages the driving mode. The Hellcat has 5 driving modes : default (nothing so interesting about it), sport (electronic car management for a dynamic driving), Track (maximum car performances), Eco (everything goes economic) and for those who really know their car, they can use the SRT performance app to manage horsepower distribution, traction control, transmission shift speed, steering effort and suspension firmness. It has also a 900W Herman Karton audio system with 18 speakers.

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Dodge did not reveal any price yet, sales will start in 2015

Sources : auto123.com ; guideautoweb.com ; blogautomobile.fr ; blog.cars.com

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                   After disappearing from the scene for years, The Dodge Challenger was reproduced in 2008, and since it has been a success, either with an SRT engine, or without, it was a real representant for the American Muscle car model, and always being developed to get more. Today, Dodge presented its newest Challenger, the 2015 Dodge Challenger SRT Hellcat, and it brought hell in deed. It is the most powerful muscle car ever, the fastest muscle car : it took it only 10.8 seconds to finish a quarter mile, it has the most powerful V8 ever build, world fastest RWD car. But what is the secret behind all these records??

                      The secret lies behind good engineering, The car is powered by an engine based on the 392 Hemi, with changes of  90% of its content, and the changes are staggering. The 6.2L V8 delivers now 717 Bhp and has 818 Nm of torque. All of this comes form a unique engine block, engineered for a higher durability, and higher performance. It is fitted with specially designed aluminium  cylinder heads, they are lighter, and let flow massive amount of air to the engine. In addition to that, the engine has now unique forged pistons, and connecting road, a unique forged crankshaft to drive the twin-screw supercharger, and a twin-screw highly efficient supercharger, that provides high amounts of power. With that, Dodge engineers worked on a new cooling system, to have the engine work at high temperatures with no problem. The interior side lamp works as both lamp and and air intake. A new phase 4 intercooler system was mounted, and the engine features a high capacity water pump. To that we add, the air intakes on the hood. A new exhaust system was fitted as well, and a new kind of it too, it is the first exhaust that reacts in opening to the high air pressure coming to it, therefore, it reduces back pressure, and increases horsepower.

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               The car comes with two gear box options, an 8-speed automatic gearbox, with paddle shifts, gear shifts are as fast as 250 ms, or a Tremec, TR 6060 6 speed manual, developed from the Viper Gt’s gearbox, and it features an upgraded clutch and an external cooling circuit. So, the car itself, has a bit of her biggest sister in it, but still beats the performances made by the bigger V10 fitted in the Viper GT. It has a new differential at the rear wheel axle, which gives amazing cornering performance, improves acceleration.

                      Air intakes on the hood, a reworked front bumper and hood, and 35% more time in the wind tunnel, to get the maximum of aerodynamics.

                    The car won’t be commercialized until 2015, it is said that is has 2 keys, one for having crazy fun unleashing 700 horses to the engine, and the second to limit the power at 500 Bhp, not the best of news, but 500 bhp are still crazy fun.