Both the CTS-V and the Camaro top engine is a detuned version of the ZR1 Corvette engine (638HP). Also to point this out the Charger doesn't compete with the Camaro (one is a 4 door the other a 2 door). The Camaro competes with the Challenger (both 2 doors) and the Charger competes with the CTS-V (both have 4 doors), as well as the G8 (which is to come back as the Caprice and with more power) even though they are no longer made.