ctrlraven
09-16-2014, 08:20 AM
http://blogs.motortrend.com/1408_dyno_mighty_challenger_sr t_hellcat_camaro_zl1_hit_the_r ollers.html
Seven-oh-seven. Not since the famed Boeing jetliner of the same name has the public been so tantalized with the number 707. With Mopar claiming the new 2015 Dodge Challenger SRT Hellcat makes 707 hp, we thought it was time to put it and the 580-hp 2014 Chevrolet Camaro ZL1 on the chassis dyno at K&N Engineering's Riverside, California, shop.
Our eight-speed automatic-equipped Challenger Hellcat was the first to hit the rollers. Dodge says the Hellcat's 6.2-liter supercharged V-8 produces an SAE-certified 707 hp and 650 lb-ft of torque at the crank. That's a lie. It produces more -- much more, even, depending on what sort of drivetrain loss you're assuming. According to K&N's dyno results, the Challenger SRT Hellcat puts down 635 hpand 591 lb-ft of torque at the rear wheels. Assuming a 12-percent drivetrain loss (automatics are getting more efficient each year), that means the Hellcat puts out about 722 hp at the crank. As for torque, well, the Hellcat makes more than advertised there as well -- 672-lb-ft, which might help explain the set of rear tires we burned through.
http://image.motortrend.com/f/blogs/1408_dyno_mighty_challenger_sr t_hellcat_camaro_zl1_hit_the_r ollers/79389684+w976/2014-chevrolet-camaro-zl1-2015-dodge-challenger-srt-hellcat-chart.jpg
Other interesting tidbits about dynoing the Challenger: The Hellcat is the fastest thing K&N had ever strapped to its dyno. The speedo stopped reading at 202 mph, but the car kept accelerating to above 225 mph when it over-sped the dyno. While the Hellcat will never go that fast moving through the atmosphere (it has the aerodynamics of a brick), it's refreshing knowing that the SRT team is so committed to being extreme that it didn't bother fitting the Hellcat with a speed limiter. Not only is the Hellcat among the fastest things to ever get strapped to a K&N dyno, but one of the hottest -- it took five fans pointed at the Hellcat in order to keep it cool for its fifth-gear dyno pull.
Now on to the Camaro. Chevrolet rates the ZL1's LSA 6.2-liter supercharged V-8 at an SAE-certified 580 hp and 556 lb-ft of torque. Our six-speed manual tester put down 472 hp and 482 lb-ft of torque to the rear wheels, which K&N noted was about 20 fewer wheel horsepower than it was used to seeing from a stock Camaro ZL1. Assuming a 10-percent drivetrain loss for the manual Camaro means the LSA is making 524 hp and 536 lb-ft of torque at the crank. While a bit lower than expected, it's worth noting that our ZL1 tester's test track numbers were exactly what we'd expect from a ZL1.
Seven-oh-seven. Not since the famed Boeing jetliner of the same name has the public been so tantalized with the number 707. With Mopar claiming the new 2015 Dodge Challenger SRT Hellcat makes 707 hp, we thought it was time to put it and the 580-hp 2014 Chevrolet Camaro ZL1 on the chassis dyno at K&N Engineering's Riverside, California, shop.
Our eight-speed automatic-equipped Challenger Hellcat was the first to hit the rollers. Dodge says the Hellcat's 6.2-liter supercharged V-8 produces an SAE-certified 707 hp and 650 lb-ft of torque at the crank. That's a lie. It produces more -- much more, even, depending on what sort of drivetrain loss you're assuming. According to K&N's dyno results, the Challenger SRT Hellcat puts down 635 hpand 591 lb-ft of torque at the rear wheels. Assuming a 12-percent drivetrain loss (automatics are getting more efficient each year), that means the Hellcat puts out about 722 hp at the crank. As for torque, well, the Hellcat makes more than advertised there as well -- 672-lb-ft, which might help explain the set of rear tires we burned through.
http://image.motortrend.com/f/blogs/1408_dyno_mighty_challenger_sr t_hellcat_camaro_zl1_hit_the_r ollers/79389684+w976/2014-chevrolet-camaro-zl1-2015-dodge-challenger-srt-hellcat-chart.jpg
Other interesting tidbits about dynoing the Challenger: The Hellcat is the fastest thing K&N had ever strapped to its dyno. The speedo stopped reading at 202 mph, but the car kept accelerating to above 225 mph when it over-sped the dyno. While the Hellcat will never go that fast moving through the atmosphere (it has the aerodynamics of a brick), it's refreshing knowing that the SRT team is so committed to being extreme that it didn't bother fitting the Hellcat with a speed limiter. Not only is the Hellcat among the fastest things to ever get strapped to a K&N dyno, but one of the hottest -- it took five fans pointed at the Hellcat in order to keep it cool for its fifth-gear dyno pull.
Now on to the Camaro. Chevrolet rates the ZL1's LSA 6.2-liter supercharged V-8 at an SAE-certified 580 hp and 556 lb-ft of torque. Our six-speed manual tester put down 472 hp and 482 lb-ft of torque to the rear wheels, which K&N noted was about 20 fewer wheel horsepower than it was used to seeing from a stock Camaro ZL1. Assuming a 10-percent drivetrain loss for the manual Camaro means the LSA is making 524 hp and 536 lb-ft of torque at the crank. While a bit lower than expected, it's worth noting that our ZL1 tester's test track numbers were exactly what we'd expect from a ZL1.