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Hellcat vs ZL1, GT500

by David Zatz on

Motor Trend recently dyno-tested a Challenger SRT Hellcat and Camaro ZL1. They found that the Challenger peaked at 635 horsepower and 591 lb-ft at the rear wheels, far more than the Camaro’s 472 hp and 482 lb-ft of toque. The accompanying graphs showed the Challenger starting out higher, with the horsepower difference growing as revs went up, and the torque peaking at around 4,500 rpm (ZL1 peaks lower, at around 3,750, but is always lower than Challenger).

The numbers indicate a relatively low power loss through the Hellcat’s ZF-built eight-speed automatic transmission. The engine, fully dressed and measured at the crankshaft, is rated at 707 horsepower and 650 lb-ft of torque. The tested Camaro had a six-speed manual transmission.

Edmund’s tested a 2013 Mustang GT500 and found it made 595 horsepower and 603 lb-ft of torque at the rear wheels. Their ratings for the ZL1 were 497 horsepower and 497 lb-ft of torque. The GT500 is only available with a manual transmission; so far there have been no publications of Hellcat manual dyno readings.

The Charger Hellcat has both beaten all other muscle cars in NHRA-certified quarter mile acceleration testing.

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