Porsche 911 GT3

Mar 22, 2013

Capable of sprinting from 0-60 mph in 3.3 seconds and from 0-124 in less than 12 seconds, the fifth-generation Porsche 911 GT3 is equipped with a new naturally aspirated engine, plus updated transmission, body and chassis.

The sports car debuted at the Geneva International Motor Show earlier this month, and has already turned a lap time on the Nurburgring Nordschleife of under 7:30 minutes, according to a press release from Porsche Cars North America.

The powertrain of the new 911 GT3 is composed of a 3.8-liter boxer engine, which yields 475 horsepower and features a 9,000-rpm redline, and specially developed Porsche duel-clutch transmission (PDK) that drives the rear wheels.

Although they share only a few common parts, the six-cylinder engine is based on the same engine as the 911 Carrera S. All other components, particularly the crankshaft and valve gear, were specially adapted and designed for the GT3 such as the titanium connection rods and forged pistons, the release noted.

Specially developed for the 911 GT3, the Porsche duel-clutch transmission has characteristics based directly on a sequential gearbox from racing to provide enhanced performance and dynamic advantages to the driver. Highlights include shorter gear ratios with closer spacing, faster shifting and shift paddles with shorter travel and increased tactile feedback, which allows the driver to place the PDK in neutral by pulling on both paddles at the same time, the release stated.

Porsche employs active rear steering for the first time for the 911 GT3 to achieve higher steering precision and improved lateral dynamics. Depending on the speed, the rear wheels steer in the same or opposite direction of the front wheels to improve stability and agility. Other new features to improve driving dynamics include an electronically controlled, full-viable rear differential lock and dynamic engine mounts.

The design of the 911 GT3’s light-yet-stiff body is based partially on the current-generation 911 Carrera, which employs a hybrid steel and aluminum construction, the company said. The vehicle also features a large, fixed rear wing to maximize aerodynamics and sits on 20-inch forged alloy wheels with center-locking hubs.