2008 Porsche Cayenne S Sport Utility 4-door 4.8l on 2040-cars

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Porsche Cayman GT4 looks sexy, rapid in the nude

Porsche doesn't officially have a name for its more hardcore version of the Cayman, yet. The speculation is that the coupe is called the GT4 as a little brother to the 911 GT3. However, the German sports car maker apparently is not interested in keeping the model's looks much of a secret because these latest shots show it without a hint of camouflage to speak of. The GT4 reportedly takes the GT3's ethos of more power, less weight and stickier-than-glue handling and brings it all to the Cayman. As these photos show, there's a much lower air dam up front with a cooling vent at the tip of the hood. Larger wheels are another obvious addition and are likely shod with some very sticky rubber. At the back, there's a double spoiler combining a wing and a ducktail. The power and gearbox for the GT4 remains a mystery, though. The rumor is that it uses a tuned version of the 3.4-liter flat-six in the Cayman S and GTS to make between 370 and 400 horsepower. A similar overhaul of the Boxster might be on the way, as well. A version of the convertible wearing some of the Cayman GT4's goodies was recently spotted testing. That one even had a manual transmission to make the prospects behind the wheel even more exciting.

Chris Harris hits the track with the Porsche Cayman GT4

The Porsche Cayman GT4 offers the first legitimate chance for Porsche's more compact coupe to really step out of the long shadow of its brother the 911. By placing the 385-horsepower Carrera S engine into the center of a Cayman and sweetening the package with a ton of truly high performance parts, the model can now really show off. The ever-enthusiastic Chris Harris puts on quite a display behind the wheel of the German brand's latest hardcore creation. As is his wont, Harris slides the GT4 all over the Portimao circuit with little wisps of smoke wafting up from its rear Michelin tires. However, what he gets really excited about is Porsche's decision to fit a real manual gearbox, rather than the PDKs rapidly taking over the company's highest performance vehicles. For anyone who loves seeing a sports car's oily bits, stay tuned all the way through because after hooning around for awhile, Harris puts the model up on a lift to find out what's so special. Porsche touts the GT4's 911 GT3-derivied front suspension, but this really shows just how many mechanical adjustments it offers the demanding driver. Related Video:

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.