2017 Porsche 911 Turbo S Convertible on 2040-cars

Auto blog

Porsche Cayman GT4 speeds back into view

We're all familiar with the succession of numbers that follow the letters GT on a hard-core Porsche 911: the GT1 that was Stuttgart's Le Mans contender in the late 90s, the GT2 that packs turbochargers but without the Turbo's all-wheel drive and excess weight, and the naturally aspirated GT3 that's the enthusiast's choice. But a GT4? That's something new, and exactly what Porsche has in store.
Spied testing in Germany once again is the upcoming GT4 version of the Porsche Cayman, set to supersede the existing GTS and take the place of the previous Cayman R at the top of Porsche's junior sports car range. This latest batch of spy shots doesn't show us much more than the last crop, but gives us a much clearer view at what promises to be the most hardcore Cayman to date.
As you can see, the Cayman GT4 packs a much more aggressive aero kit and rolling stock than any version we've seen to date. It's got a lip spoiler, big air dam and GT3-style vent in front of the hood, deep air scoops along the flanks, a set of spindly alloys packing oversized brakes, a diffuser with twin central exhaust tips around back and a rear wing that's likely to be replaced with a sleeker unit before the GT4 reaches production.

Porsche 911 Aerodynamic prototype cheated the wind ahead of its time

You might think that sports cars would have the lowest drag coefficient of all cars. And yes, they do tend to be more slippery than, say, SUVs or convertibles, but the sleekest vehicles on the road tend to be EVs, hybrids and luxury sedans. Sports cars, on the other hand, have aerodynamically detrimental needs for downforce and additional engine cooling. Still, the Porsche 911 is better than most, and has only gotten more so over the years. Its relatively narrow track and compact form mean it has a smaller frontal area than some other sports cars, and the gradual sweeping back of its headlights and windshield have only augmented its capacity for cheating the wind.
This 911 prototype, however, is even more aerodynamic than most. It's based on a "G model" 911 from 1984, but employed such features as covered wheels, a new rear spoiler and a reprofiled front end to drop its drag coefficient from 0.40 to 0.27, making it as slippery as a modern sedan and better at cheating the wind than just about anything built up to that point, save for maybe the Tatra 77, Citroën SM or Tucker Torpedo.
Elements of this prototype ended up gradually making it into production Porsches for years to come, and you can clearly see early influences on the second-generation 964 and even on the 959. It's featured here as the latest installment in a video series on rare historic Porsches unearthed from the company archives, following previous clips that featured a rare V8-powered 911 and a mid-engined 911 prototype. Scope out the latest episode in the video below.

Where to watch and follow the 24 Hours of Le Mans this year

In less than 24 hours the flag will drop on Audi's title defense at the 24 Hours of Le Mans, Toyota's best ever chance to win and Porsche's return to le grand defi. The Le Mans organizers have kept as au courant with broadcast options as they have with power unit technology, so you'll be able to find a place to watch or listen no matter what your preferred method. Friend-of-Autoblog Reilly Brennan has again put together an exhaustive "couch kit" of viewing options, which you can check out at his site. Here's the short list: Le Mans Site Le Mans TV Le Mans Facebook page Le Mans Twitter page FIA WEC Live timing Audi Sport stream Corvette Racing stream Nissan NISMO stream Entry list and grid Spotter's Guide You can watch or listen to the excellent Radio Le Mans, app, Autosport will have hourly updates and a live blog, the ACO has a Le Mans app. Fox will broadcast the event over a combination of Fox Sports 1, 2 and its Fox Sports Go App from 8:30 EST Saturday morning until 9:30 am EST Monday morning. Hit up Reilly Brennan's site for even more options and details like Eurosport and Daily Motion, and good watching – this should be a spectacular race. News Source: Reilly Brennan Motorsports Audi Porsche Toyota