The most powerful non-turbo Porsche | 2018 Geneva Motor Show

The 2019 Porsche 911 GT3 RS has come, and glory with it. The engine is a naturally aspirated 4.0-liter flat-six now good for 520 horsepower and 346 pound-feet of torque. That’s 20 hp above the last GT3 RS and the current GT3, making this motor the most powerful naturally aspirated powerplant ever slipped inside a road-legal 911.