It is one of the most impressive-sounding cars that we have heard at Johnny Bohmer Proving Grounds.
This is something we have never seen: Johnny Bohmer PROVING GROVES. It’s not the Porsche 911 – we watched a bone stock GT2 RS hit 219 mph last May. We won’t try to trick you about speed with this 911 GT3 Cup race car. It’s flat-out speed of 172 mph is not as impressive as the other Space Shuttle cars. It’s the only car that can turn a corner flat out and not spin like a UFO. It sounds amazing.
This is a 2017 911 GT3 racing car with plenty of downforce. The naturally-aspirated 4.0-liter flat-six produces 485 horsepower (362kW) and is shifted by a six speed sequential gearbox. It’s also a race car and weighs in at 2,646 pounds. This is very noticeable because the car pulls under acceleration of 1.1 g early in the run, without trying too hard.
Porsche’s racing modifications are most evident in the sprint to 150 mph. Although 485 horsepower sounds a little low compared to 700-hp muscle cars, the GT3 accelerates like it has twice as much power. It is possible to run out of gear at one end of the speedometer. The Porsche GT3 could have gone a bit faster if it had only seven gears. Here’s the fun part: had seven gears. Or was it?
911 GT3 Cup cars have six-speed sequential transmissions. This car is listed as having exactly that. made listen to this clip seven times. There are seven gear changes. Johnny Bohmer Proving Grounds doesn’t just cater to speed freaks. There is a lot of prototype testing so it could have been a race version of the sevenspeed dual-clutch transmission that is available in street-legal cars.
Listen to it. It’s hard to believe that flat-six can still be heard singing its horsepower tune. Are you hearing seven gears or just the first “shift” due to tire slippage?