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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:

GM extending warranties on Cadillac CTS-V and Chevy Camaro ZL1 for supercharger issue

Okay General Motors, we've sat by and watched you recall the compact cars, crossovers and pickup trucks, and aside from reporting on it, we've been fairly quiet. This, though, this will not do. We can almost tolerate the recalls on the bread-and-butter cars, but leave the performance vehicles alone.
According to a report from The Car Connection, GM has discovered a problem with the superchargers of the 6.2-liter V8s found in the Chevrolet Camaro ZL1 and the Cadillac CTS-V. Apparently, the issue rests around the internal bearing shaft grease, which can become contaminated (we aren't sure with what). If left unchecked, it'll first lead to a rattle at idle, which goes away under slight throttle. The real warning stage is when a high-pitched squeal develops, signaling that the bearing shaft has failed. Naturally, severe engine damage is the next step (although it's possible that the engine will also just refuse to turnover, although neither case is desirable).
According to TCC, GM will replace the superchargers on vehicles that have exhibited symptoms of bearing shaft failure free of charge. It will also, allegedly, be extending the warranty on all supercharged ZL1s and CTS-Vs to 10 years or 120,000 miles (whichever comes first), from the date of purchase. Officially, only 2009 to 2013 CTS-Vs and 2012 to 2013 ZL1s are suffering from this issue.

2016 Cadillac CTS-V arrives with 640 hp, 200-mph top speed

Ask the company's executive team, and they'll tell you "this is the maximum Cadillac V-Series." It's the 2016 CTS-V sedan, and it packs the very best of what's possible at Cadillac. And the company says it doesn't think "anyone thought it was possible that we could push [the CTS-V] this far." The big news is what's underhood: General Motors' supercharged, 6.2-liter LT4 V8, tuned to 640 horsepower and 630 pound-feet of torque. That's 10 hp and 20 lb-ft less than the monstrous Corvette Z06, and the result is the most powerful car Cadillac has ever produced. With rear-wheel drive, launch control and the eight-speed automatic transmission (sorry, folks – no more manual transmission here), Cadillac says the 2016 CTS-V will sprint to 60 miles per hour in just 3.7 seconds, on its way to a top speed of 200 miles per hour. Naturally, Cadillac's engineers say they have tuned the CTS-V to ensure it can put all that power to the ground with the most precision and poise possible. That starts with the excellent Magnetic Ride Control active damping system (with a claimed 40-percent increase in responsiveness)and a 25-percent increase in structural stiffness that should improve overall handling and steering. What's more, a high-performance Brembo brake package comes standard, as do 19-inch alloy wheels wrapped in seriously sticky Michelin Pilot Super Sport tires that will reportedly offer 1g in lateral acceleration. Cadillac also says that all changes to the bodywork are functional. That includes a carbon-fiber hood, front splitter, rear spoiler and diffuser that are super light and aid with aerodynamics and weight reduction – all of which will be available as an optional package for folks who like the exposed carbon look. Inside, it's more of what we're used to on lesser CTS models, but there's newly optional carbon fiber trim, microfiber suede upholstery trim, and some seriously awesome Recaro seats. Additionally, as we exclusively reported earlier, Cadillac will offer GM's Performance Data Recorder in the CTS-V. It records high-definition video with data overlays that's sharable via social media. Beyond that, Cadillac will offer the usual smattering of tech goodies, including Siri Eyes Free, OnStar with 4G LTE, CUE infotainment with navigation and Bose audio. The CTS-V will launch later next year, following the debut of the smaller ATS-V. In the meantime, the sedan will officially bow at the 2015 Detroit Auto Show in just a few weeks.