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That's what is claimed in this article from Torque news using data they got from a Motor Trend article. http://www.torquenews.com/106/2015-dodge-challenger-srt-hellcat-underrated-707hp
Here's an excerpt from the article see the link above for the complete article.
The folks from Motor Trend recently took the 2015 Dodge Challenger SRT Hellcat to the dyno at the K&N Engineering shop and they found that the official figures 707 horsepower and 650lb-ft of torque are underrated – possibly by a whole lot.
In the world of high performance street cars, automakers have been underrating them since the 1960s (if not before that), so it shouldn’t come as any huge surprise that the 2015 Dodge Challenger SRT Hellcat offers more than the 707 horsepower and 650lb-ft of torque that it is stated to have in Chrysler’s marketing literature. However, it does come as a very pleasant surprise that the most powerful American production car of all time is seemingly underrated by such a significant measure – with calculated power figures that move it much closer to the high priced supercars that rank above it on the list of the world’s most powerful production road cars.
The Challenger Hellcat on the Dyno
Motor Trend took the 2015 Dodge Challenger SRT Hellcat with the new heavy duty 8-speed TorqueFlite automatic transmission to K&N Engineering’s dyno in Riverside California to see how true the power numbers are for this brawny Mopar muscle car. With stated figures of 707 horsepower and 650lb-ft of torque, the Hellcat Hemi makes the Challenger (and the Charger) the most powerful American production car ever while also ranking 6th when compared to every other current production car in the world so with claims like that – you know that someone would be getting a Hellcat powered Challenger to the dyno in a hurry.
Well, Motor Trend appears to be the first publication to put the 2015 Dodge Challenger SRT Hellcat on the rollers and not only did it prove those numbers – it blew them away.
The Hellcat Challenger put down 635 horsepower and 591lb-ft of torque to the rear wheels with the automatic transmission. The industry norm for calculating engine horsepower at the crankshaft based on drivetrain loss is 15% and if 635 horsepower is “only” 85% of the Hellcat Hemi’s actual power output – the engine is making closer to 747 horsepower. Using that same math for the torque output, 591lb-ft would be about 85% of 695…although considerably higher than the 650lb-ft of torque that Chrysler claims. If those power figures were official, the Challenger SRT Hellcat would pack more horsepower than the Ferrari F12 Berlinetta and the Lamborghini Veneno and in terms of torque – no other production car in the world could rival 695lb-ft.
Here's an excerpt from the article see the link above for the complete article.
The folks from Motor Trend recently took the 2015 Dodge Challenger SRT Hellcat to the dyno at the K&N Engineering shop and they found that the official figures 707 horsepower and 650lb-ft of torque are underrated – possibly by a whole lot.
In the world of high performance street cars, automakers have been underrating them since the 1960s (if not before that), so it shouldn’t come as any huge surprise that the 2015 Dodge Challenger SRT Hellcat offers more than the 707 horsepower and 650lb-ft of torque that it is stated to have in Chrysler’s marketing literature. However, it does come as a very pleasant surprise that the most powerful American production car of all time is seemingly underrated by such a significant measure – with calculated power figures that move it much closer to the high priced supercars that rank above it on the list of the world’s most powerful production road cars.
The Challenger Hellcat on the Dyno
Motor Trend took the 2015 Dodge Challenger SRT Hellcat with the new heavy duty 8-speed TorqueFlite automatic transmission to K&N Engineering’s dyno in Riverside California to see how true the power numbers are for this brawny Mopar muscle car. With stated figures of 707 horsepower and 650lb-ft of torque, the Hellcat Hemi makes the Challenger (and the Charger) the most powerful American production car ever while also ranking 6th when compared to every other current production car in the world so with claims like that – you know that someone would be getting a Hellcat powered Challenger to the dyno in a hurry.
Well, Motor Trend appears to be the first publication to put the 2015 Dodge Challenger SRT Hellcat on the rollers and not only did it prove those numbers – it blew them away.
The Hellcat Challenger put down 635 horsepower and 591lb-ft of torque to the rear wheels with the automatic transmission. The industry norm for calculating engine horsepower at the crankshaft based on drivetrain loss is 15% and if 635 horsepower is “only” 85% of the Hellcat Hemi’s actual power output – the engine is making closer to 747 horsepower. Using that same math for the torque output, 591lb-ft would be about 85% of 695…although considerably higher than the 650lb-ft of torque that Chrysler claims. If those power figures were official, the Challenger SRT Hellcat would pack more horsepower than the Ferrari F12 Berlinetta and the Lamborghini Veneno and in terms of torque – no other production car in the world could rival 695lb-ft.
