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Most powerful non turbo Porsche | 2018 Geneva Motor Show

The 2019 Porsche 911 GT3 RS has come, and glory with it. The engine provides the first half of the GT3 RS show, that 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.