There is absolutely no doubt that the 2015 Chevrolet Camaro Z/28, is one bad muscle machine, powered by an LS7 V8 beast and together with some key factory upgrades, this Chevy masterpiece is a straight killer on the track.

But, even though the car in its factory shape is already one hell of a ride, that won’t stop John Hennessey from leaving it in its stock form, oh no, the man knows much better than that!

Allow to us present to you the Hennessey Performance outstanding build equipped with the HPE650 engine upgrade, which enables it to shift from 505 hp to more than 650hp at the crankshaft (without a supercharger). Here we bring you an amazing video footage in which John takes the Camaro for a ride and ends up with an accidental call at the On-Star emergency service.

Once he finished the call with the nice female responder, what’s left is to enjoy the glorious roar of the one and only LS7 engine.

We wonder if the car was making too much torque to be considered safe by the service? What do you think? One thing is for sure, John enjoyed every single moment of the driving.