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Cadillac to Corvette: You’re not getting our twin-turbo V8 engine

NEW YORK — Cadillac president Johan de Nysschen bluntly shot down rumors his brand's powerful twin-turbo V8 is also headed for the Chevy Corvette. Speaking Wednesday at the New York Auto Show, he said: "Just quit the speculation it's headed for Corvette. It's not." The 4.2-liter V8 cranks out 550 horsepower and 627 pound-feet of torque in the Cadillac CT6 V-Sport, which debuted at the show. With that kind of performance and the fact the engine will be hand-built at the General Motors Performance Build Center in Bowling Green, Ky. — at the Corvette factory — led enthusiasts to presume the engine would eventually be under the Vette's hood. De Nysschen, however, argued the engine will also focus on levels of refinement, rather than the Corvette's raw, visceral dynamic. "I think Corvette wants a different kind of character," he said. In fact, the V8 is set to be only for Cadillacs, de Nysschen said, giving the luxury brand its first exclusive engine in years. "It's a matter of being a thoroughbred luxury car," he said. "It's really only a luxury brand that could recoup this [development] cost." A version of the engine making 500 hp and 553 lb-ft will also be used in other Cadillac models. De Nysschen declined say which vehicle will get the engine next. The new V8 uses a "Hot V" configuration more common to German performance cars, and has direct injection, electronic wastegate control, active-fuel management and stop-start technology. It teams with a 10-speed automatic transmission and fits either rear- or all-wheel drive systems. With a new mid-engine Corvette — and potentially more versions of the existing generation Vette — on the horizon, speculation pointed to the sports car getting a twin-turbo powerplant of some sort (V6 rumors also have floated), and the Cadillac 4.2-liter seemed to fit on paper. According to de Nysschen, that won't be the case. Still, even though the Cadillac boss says this specific engine won't go to Corvette, it's hard to not think some version of this engine, perhaps in a different displacement, could find its way under the hood of the Vette at some point in the future. Related Video:

The Beast 2.0: What the 2016 presidential election winner will ride in

The current presidential limousine, which is referred to as "The Beast," will be altered for the next President of the United States. Our photographers managed to capture the vehicle testing. " The Beast 2.0" will follow closely behind the current presidential limousine that's built upon a rugged commercial truck chassis and has a sedan-like body. Instead of wearing styling details from the now-retired Cadillac STS, the new presidential limo appears to borrow looks from the latest Escalade and the CT6 sedan. The bomb-proof prototype is wearing LED headlights, has a more angular grille that features Cadillac's wreathless crest, and ditches regular antennas for a shark fin unit. Other than these changes, the Beast 2.0 should still be able to house seven passengers and have enough protection to be one of the safest vehicles on the planet. The prototype looks like it's higher off the ground, as well, which should help the next president to avoid an embarrassing moment. There's no word on whether the Beast 2.0 will be ready in time for the next president presidential inauguration in January, but our photographers report that GM recently stepped up its testing for the limousine at its Milford Proving Grounds. Related Video: Featured Gallery The Beast 2.0 Spy Shots Image Credit: KGP Photography Government/Legal Spy Photos Cadillac Truck Sedan president Hillary Clinton the beast

How GM's grueling 24-hour test gets the kinks out of its performance cars

One of the biggest challenges automakers face when designing a high-performance car is making sure that it is both fast and reliable. For General Motors, any car that might be taken to the track by its owner - like the Corvette, Camaro Z/28 (shown above) and the Cadillac CTS-V, for example - undergoes a rigorous and strenuous 24-hour test by engineers at the Milford Proving Grounds, as pointed out by Car and Driver.
We've posted on this topic in the past - on a video showing the Camaro ZL1 being brutalized, for instance - but this article gives a more in-depth look at what actually happens behind the scenes... including what that poor ZL1 went through. Though the test isn't for 24 hours straight, the cars are pushed as hard as possible by some of GM's best drivers with only the brakes and tires replaced frequently.
We don't want to ruin the fun for you, but it is an interesting article that tells just some of what GM does to develop its sports cars. Check out the full article over at Car and Driver for the rest of the story.