After a journey with my Porsche GT3 RS 3.8, I'm taking a leap to the rare 4.0 model. Discover what makes the GT3 RS 4.0 so special and why this upgrade is worth it for any true Porsche enthusiast.

Maximum torque of 339 ft/lbs is reached at 5,750 rpm. The 911 GT3 RS 4.0 offers truly impressive performance, lapping the famed Nürburgring-Nordschleife in 7 minutes and 27 seconds.

Limited to 600 vehicles worldwide, the 911 GT3 RS 4.0 takes the attributes that have made the Porsche 911 GT3 a winner on the racetrack and transferred them to the GT3 road car program.

The special Porsche 911 GT3 RS 4.0 Type 997 didn't come cheap, but that never stopped anyone before. The iconic 911 sold for $185,950 in 2011 and currently goes for about $320,000 or more.

The 2022 Porsche 718 Cayman GT4 RS just made its debut Tuesday night ahead of the Los Angeles Auto Show , and it packs the 4.0-liter flat-six engine from the Porsche 911 GT3. Yup, you read that right.

Providing the power is a 4.0-liter naturally aspirated flat-six, similar to what you’d find in the pedestrian Porsche 911 GT3. But it sees a slight boost in output: 518 hp up from 502, enabled ...

Called the “Tribute to Carrera RS Package,” the homage starts with the already potent GT3, which is powered by a 502-horsepower 4.0-liter naturally aspirated flat-six engine planted behind the ...