Under the new 911 GT3 Porsche’s hood, is a 3.8-liter, boxer engine that delivers a total of 475 horsepower and sprints the car from 0 to 60 mph in just 3.3 seconds and up to a top speed of 195 mph. The GT3’s engine is based on the one used in the new 911 Carrera S, but it gets a modified crankshaft and valve gear, plus titanium connecting rods and forged pistons. These updates allow the engine to rev seamlessly to 9,000 rpm. The engine is mated to a Porsche dual-clutch transmission (PDK) that sends power to the rear wheels through a new high-traction rear-wheel-drive system. All these updates have helped the GT3 to score new performance records, including a 7-minute 30-second Nürburgring Nordschleife run.