2007 Cadillac Dts Luxury I on 2040-cars

Auto blog

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.

Cadillac XT4-V on the way?

An anonymous photographer sent Cadillac Society two tightly cropped images of an XT4 crossover wearing two surprising badges. On the right, above the taillight, there's a 2.7 badge, In the lower right corner there's a V Series badge — the full-fat, multicolored V badge, not the monochrome V-Sport version. The images — assuming they're real — elicit more questions and no answers, the first being, is this the XT4 V-Sport that's been rumored since last October? Back then, GM Authority discovered front and rear images of such a vehicle hiding in plain sight, on a Cadillac site landing page. The backside of a thick-hipped XT4 is graced with the old V-Sport badge. We know the carmaker has split its V Series cars into two tiers, the lower intended to be less intimidating than before, the upper tier the continuation of the mongo V Series cars we've known and loved. The hints have been that the entry level will be called V Series, while the upper level takes the name "Blackwing," after the name of Cadillac's new 4.2-liter, twin-turbo V8 engine. With Mark Reuss himself having said, "We got rid of all the V-Sports," this supposed XT4-V offers more proof that V Series effectively represents a new V-Sport line. The only cosmetic giveaways to increased performance we can see are a carbon fiber trim in the license plate area, and an exhaust treatment similar to that on the recently introduced CT4-V. We're not certain what the 2.7 badge means for V branding on crossovers. The standard XT4 wears a 2.0 badge on the tailgate, representing its 2.0-liter four-cylinder with 237 horsepower and 258 pound-feet of torque. The XT5 gets a number, too, but the XT6 does not. GM's 2.7-liter four cylinder with 311 hp and 348 lb-ft first showed up in the Chevy Silverado, will get 320 hp and 369 lb-ft in the coming CT4-V, and has been predicted for the XT4-V. However, V cars — both Sport and Series — have never worn displacement badges. The new CT4-V and CT5-V go without numerical identifiers on their decklids. If there is an XT4-V on the way this year, we only have a few months before we see it and get some answers.

2022 Cadillac CT5-V Blackwing, CT4-V Blackwing bring big performance back to the brand

They're finally here, the real successors to the Cadillac CTS-V and ATS-V: the 2022 Cadillac CT5-V Blackwing and CT4-V Blackwing. And at least on paper, they sure seem like worthy successors to those superb super sedans. They're more powerful, come with standard manual transmissions, and feature the latest and greatest chassis upgrades available. We'll start things off with the most beastly of the Caddies, the CT5-V Blackwing. Like the CTS-V predecessor, the Blackwing gets a supercharged 6.2-liter pushrod V8. But thanks to intake and exhaust improvements, output is up to 668 horsepower and 659 pound-feet of torque, as opposed to the CTS-V's 640 horses and 630 pound-feet. The engine also is handbuilt in Bowling Green, Ky., just like the short-lived turbocharged DOHC Blackwing V8. It's coupled either to a six-speed manual transmission with a twin-disc clutch, rev matching and no-lift shifting, or a 10-speed 10L90 automatic transmission. Power goes to the electronically controlled limited-slip differential at the rear, and rear-wheel drive is the only drive configuration available. The transmission and differential each get their own oil coolers, too. Cadillac says the CT5-V Blackwing should be able to hit 60 mph in 3.7 seconds with the automatic transmission, and the top speed is over 200 mph. 2022 Cadillac CT5-V Blackwing View 13 Photos As for the CT4-V Blackwing, it gets a twin-turbocharged 3.6-liter V6 built in Canada, and although it is more powerful than the previous car, it's only by a small amount. The CT4-V Blackwing makes 472 horsepower versus the ATS-V's 464, and the 445 pound-feet of torque is the same between each car. Just like the CT5-V Blackwing, the CT4-V gets either the same six-speed manual transmission or a 10-speed 10L80 automatic transmission, the electronically-controlled limited-slip differential, and the oil coolers. Picking the manual transmission has extra perks on the CT4-V Blackwing, though. The engines in manual cars received titanium connecting rods and revised crankshaft counterweights. The manual transmission's no-lift shift functionality is also more helpful on the CT4-V Blackwing since it keeps the car in boost between gears. Still, Cadillac's 0-60 mph time estimate is for the automatic model at 3.8 seconds. Top speed is 189 mph. 2022 Cadillac CT4-V Blackwing View 16 Photos Keeping all that power under control are a variety of chassis upgrades.