Latest news with #LT7
Auto Blog
19 hours ago
- Automotive
- Auto Blog
Did Chevy Underestimate The Corvette ZR1's True Performance?
Corvette ZR1 Reaches Customers And The Dyno The arrival of the C8 Corvette ZR1 signifies to the world that Chevy can kick it with the best of them, but even with a four-figure horsepower claim, aftermarket tuners will never be satisfied. Now that the ZR1 has begun to reach customers, some of whom represent tuning shops, the race is on to unleash the 5.5-liter twin-turbo V8's full potential. Over the next few months, you're going to see social media posts from one company then another claiming firsts and world records, be that on the quarter-mile or the horsepower leaderboard. But before tuners do battle, they need to understand what they're really working with, and to do that, a dyno run provides some base numbers to build upon. Chevrolet claims 1,064 horsepower and 828 lb-ft of torque at the LT7's crank, and Paragon Performance in Waukee, Iowa, has put that to the test on a rolling road. The video is embedded at the bottom of this article. Math Suggests Chevy's Claims Are Modest According to Paragon's dyno, the ZR1 produces only a little less horsepower at the wheels with a reading of 1,028 ponies. Automakers have traditionally quoted their figures at the crankshaft because of several reasons. Firstly, the transference of energy from that point through the flywheel and clutch, then through the differential, and then through the shafts that drive the wheels (which themselves must transfer energy to the tires and lose some to friction and noise) is never fully conserved through the system. Heat and sound are both forms of energy that exist as by-products of the process of delivering rotational force from the crankshaft to the tires, and because of these fundamental inefficiencies, and because those inefficiencies vary across applications (a 6.2-liter V8 will produce a different figure at the wheel of a truck architecture than that of a sports car, for example), it's more cost-effective and consistent to quote the figures at the crank. But when it comes to performance cars, it seems that automakers prefer to tell a so-called white lie. Taking into account the losses described above, 1,028 hp at the wheels from 1,064 hp at the crank is astonishingly efficient, even in a package as compact as this one. Even more surprisingly, the torque figure is 11 units higher than claimed at 839 lb-ft. A mid-engine layout like this can be expected to have drivetrain losses of around 10%, and if that's the case, this untouched ZR1 is actually producing somewhere in the region of 1,180 hp and 920 lb-ft of torque. So why are the claimed figures so far off? GM Is Covering All Its Bases We've seen this many times before. BMW, in particular, has a habit of underquoting its performance figures, including 0-60 mph times. IND Distribution usually tests every new M, and the latest M5 is no exception to the unspoken rules of overpowered German behemoths. We've also seen it on the Toyota GR Supra, with two independent dyno runs in 2019 and another in 2020 confirming that the BMW-supplied B58 engines under their hoods were overdelivering. Back to the ZR1, and Car and Driver recently achieved a 2.2-second sprint from 0-60 mph, shaving a tenth off GM's own claim, despite testing on an unprepped surface and omitting the 1-foot rollout that automakers often use to cut an extra 0.2 seconds or so from their timing. Overdelivering on power and initial straight-line performance may be done to account for varying fuel grades, altitudes, and use cases, so the power figure announced by Chevy is likely an average figure, or one determined after extensive use, such as a track-day simulation. It also keeps the competition guessing. Another possibility is that this particular dynamometer is what people in the industry like to call a 'happy dyno' that hasn't been perfectly calibrated, or that the conditions in which the test was conducted were above average. Paragon Performance intends to find out with a lot more testing before fiddling with boost, fuel, and timing, so perhaps future dyno runs will result in a figure closer to the advertised. Thereafter, it'll be open season in the rush to the record books. About the Author Sebastian Cenizo View Profile
Geeky Gadgets
2 days ago
- Automotive
- Geeky Gadgets
2026 Corvette ZR1X: America's 1,250-HP Hybrid Hypercar
The 2026 Corvette ZR1X is set to redefine the American hypercar landscape. With an astounding 1,250 horsepower, this electrified all-wheel-drive marvel seamlessly combines innovative hybrid technology with the raw power of a V8 engine. Chevrolet has taken the iconic Corvette platform to unprecedented heights, masterfully blending exceptional performance, groundbreaking innovation, and uncompromising luxury into a single, awe-inspiring package. The ZR1X is more than just a car; it is a bold statement of engineering excellence and a tantalizing glimpse into the future of high-performance vehicles. Electrified Power Meets Precision Engineering At the heart of the ZR1X lies the formidable LT7 twin-turbo V8 engine, capable of delivering an astonishing 1,064 horsepower and 828 lb-ft of torque to the rear wheels. Complementing this powerhouse is a front-axle electric motor that contributes an additional 186 horsepower and 145 lb-ft of torque, creating a seamless and highly responsive all-wheel-drive system. This ingenious hybrid setup allows the ZR1X to achieve a GM-estimated 0-60 mph time of under 2 seconds and a quarter-mile time of under 9 seconds, placing it firmly in the realm of the world's most elite hypercars. The advanced battery system, carefully designed for rapid energy cycling, ensures consistent and reliable performance on both the road and the track, making the ZR1X a true force to be reckoned with in any driving scenario. Pricing and Availability While Chevrolet has yet to announce the official pricing for the 2026 Corvette ZR1X, industry experts anticipate that it will position itself as a premium offering within the already impressive Corvette lineup. Production of this groundbreaking hypercar will take place at the renowned Bowling Green Assembly Plant in Kentucky, where every LT7 engine will be carefully hand-assembled by a team of master engine builders, ensuring the highest level of craftsmanship and attention to detail. Availability details will be shared closer to the production date, but enthusiasts can expect both coupe and hardtop convertible options to hit the market, catering to a variety of preferences and driving styles. Unmatched Performance and Customization The ZR1X offers two distinct chassis configurations to suit the diverse needs and preferences of discerning drivers. The standard chassis, paired with high-performance Michelin PS4S tires, provides an optimal balance of comfort and performance, making it ideal for both daily driving and spirited weekend adventures. For those seeking the ultimate track-focused experience, the ZTK Performance Package delivers uncompromising handling, thanks to the inclusion of Michelin Pilot Cup 2R tires and a high-downforce Carbon Aero package that generates an impressive 1,200 lbs of downforce at speed. The braking system, featuring massive Alcon 10-piston front and 6-piston rear calipers with carbon ceramic rotors, ensures unparalleled stopping power and fade resistance, instilling confidence in even the most demanding driving situations. Inside, the ZR1X features a reimagined interior that showcases a sleek three-screen layout, providing drivers with real-time performance data and a host of customizable features. The use of premium materials throughout the cabin further improves the overall experience, making the ZR1X as luxurious as it is powerful. Specifications Engine: LT7 twin-turbo V8, 1,064 horsepower, 828 lb-ft of torque LT7 twin-turbo V8, 1,064 horsepower, 828 lb-ft of torque Front-Axle Motor: 186 horsepower, 145 lb-ft of torque 186 horsepower, 145 lb-ft of torque Battery: 1.9 kWh capacity, optimized for rapid energy cycling 1.9 kWh capacity, optimized for rapid energy cycling Performance: 0-60 mph under 2 seconds, quarter-mile under 9 seconds 0-60 mph under 2 seconds, quarter-mile under 9 seconds Brakes: Alcon 10-piston front and 6-piston rear calipers, carbon ceramic rotors Alcon 10-piston front and 6-piston rear calipers, carbon ceramic rotors Chassis Options: Standard with Michelin PS4S tires or ZTK Performance Package with Michelin Pilot Cup 2R tires Standard with Michelin PS4S tires or ZTK Performance Package with Michelin Pilot Cup 2R tires Aero Package: Optional Carbon Aero package with 1,200 lbs of downforce Optional Carbon Aero package with 1,200 lbs of downforce Interior: Three-screen layout, Performance App, premium materials Three-screen layout, Performance App, premium materials Body Styles: Coupe and hardtop convertible Explore More For automotive enthusiasts intrigued by the groundbreaking 2026 Corvette ZR1X, Chevrolet's diverse lineup offers a range of additional models that cater to a variety of performance needs and preferences. From the track-ready Z06, with its naturally aspirated V8 and razor-sharp handling, to the innovative E-Ray, which combines the efficiency of an electric motor with the raw power of a combustion engine, there is a Corvette to suit every taste and driving style. Moreover, the advancements in hybrid technology showcased in the ZR1X could pave the way for future innovations in both performance and sustainability, setting the stage for a new era of American automotive engineering. Whether you are a die-hard Corvette fan or a newcomer to the brand, the ZR1X stands as a testament to what is possible when tradition meets innovation, and it is poised to leave an indelible mark on the world of high-performance vehicles for years to come. Source Corvette Filed Under: Auto News Latest Geeky Gadgets Deals Disclosure: Some of our articles include affiliate links. If you buy something through one of these links, Geeky Gadgets may earn an affiliate commission. Learn about our Disclosure Policy.
Yahoo
18-06-2025
- Automotive
- Yahoo
1,250-HP Chevrolet Corvette ZR1X Hybrid Runs The Quarter-Mile In Under 9 Seconds
The new Chevrolet Corvette ZR1 is only just now reaching dealerships in the U.S., but that twin-turbo monster is already being usurped by a new even-higher-performance version of the C8 Corvette. Long rumored to be called Zora, this new variant is actually dubbed ZR1X, and it takes the ZR1's powertrain and adds on a similar hybrid system to the one in the E-Ray for a truly ridiculous amount of power and speed. General Motors senior vice president Ken Morris says the C8's platform was designed from the start with the ZR1X's powertrain in mind — that's probably why we started hearing rumors about it before the C8 even debuted. With 1,250 horsepower and all-wheel drive, the hybrid ZR1X is quicker to 60 mph and in the quarter-mile than any roadgoing Corvette before it, and its on-track performance is sure to be just as impressive. The standard ZR1 will soon be setting an official Nürburgring lap time, and ZR1X prototypes have already been spotted at the 'Ring as well, with the Ford Mustang GTD directly in its sights. Read more: These Cars Are Police Magnets At the heart of the ZR1X is the same 5.5-liter LT7 V8 that's in the standard ZR1, which is essentially the Z06's flat-plane-crank motor with a pair of turbochargers attached. All of the LT7's 1,064 horsepower and 828 pound-feet of torque are sent to the ZR1X's rear wheels through an 8-speed dual-clutch automatic transmission. Mounted at the front axle is an electric motor with 186 hp and 145 lb-ft of torque, an increase of 26 hp and 20 lb-ft over the E-Ray, with Chevy saying the ZR1X's motor has strengthened components but the same size and shape as the E-Ray's unit. The 1.9-kWh battery pack located in a central spine in the floor of the chassis has more usable energy and a higher peak operative voltage than the E-Ray's for better on-track capability. There's no physical connection between the V8 and the electric motor — the former only powers the rear wheels, while the latter only powers the fronts. The electric motor also automatically disconnects once you reach 160 mph, having done its main job of nearly knocking you out with acceleration force. Chevy says the ZR1X will hit 60 mph from launch in under 2 seconds where the ZR1 and E-Ray need 2.3 and 2.5 seconds, respectively, and it'll run the quarter-mile in under 9 seconds at over 150 mph, versus 9.6 seconds in the ZR1 and 10.5 seconds in the E-Ray. That will make the ZR1X easily one of the quickest-accelerating cars you can buy, even among the most powerful EVs. A Lucid Air Sapphire will cover a quarter of a mile in just over 9 seconds, while a Dodge Demon will do it in just under 9 seconds. The standard ZR1 will hit 233 mph, and the ZR1X matches that. Chevy says the ZR1X's eAWD system has "undergone a significant upgrade" compared to the E-Ray, both when it comes to on-road and on-track driving, and that it's constantly monitoring driver inputs to perfectly manage power delivery and traction. There are three different energy "strategies" for when on track, activated by a button on the steering wheel: Push-to-Pass for maximum power on demand, Qualifying for optimal lap times, and Endurance for longer lap sessions and consistent eAWD output. All 2026 Corvettes have a new PTM Pro setting for the traction management, which disables the traction and stability control systems, but in the ZR1X the regenerative braking torque vectoring remains on, as does the front axle pre-control that "actively manages inside front brake pressure to enable maximum corner-exit traction." Optional on the normal ZR1 but standard on the ZR1X is the J59 carbon-ceramic brake package, which has Chevy's largest rotors ever at 16.5 inches front and rear paired with 10-piston front calipers and 6-piston rear calipers. Chevy says it's the most resilient braking system ever tested by GM, and engineers saw 1.9G of deceleration from 180 to 120 mph. The standard touring-focused chassis setup uses magnetic ride control and Michelin Pilot Sport 4S tires, but you can option a ZTK Performance package that has firmer springs and grippier Pilot Cup 2R tires. You'll be able to get the ZR1X in both coupe and convertible body styles, and it'll have the same updated interior design as other 2026 Corvettes, but sadly its exterior doesn't look any different from a normal ZR1, badges aside. Real nerds will be able to spot an extra intercooler in the front bumper. The ZR1X will be available with the same Carbon Aero package as other ZR1s, which adds a gigantic rear wing, dive planes on the front bumper, a gurney lip in front of the hood vent and underbody strakes that all combine to give you 1,200 pounds of downforce at top speed. Chevy isn't ready to talk money yet, but the ZR1X will surely command a hefty premium over the standard 2026 ZR1's $189,195 starting price. We don't know when it will go into production yet either, but it'll be built at the same Bowling Green, Kentucky, assembly plant as all other Corvettes, with the LT7 being hand-assembled there. Want more like this? Join the Jalopnik newsletter to get the latest auto news sent straight to your inbox... Read the original article on Jalopnik.
Car and Driver
17-06-2025
- Automotive
- Car and Driver
View Photos of the 2026 Chevy Corvette ZR1X
Read the Full Story After years of anticipation, the ultimate Corvette is finally here. Say hello to the 2026 Corvette ZR1X. It takes the best parts of the already atomic ZR1, namely the 1064-hp LT7 twin-turbo V-8, and pairs it with an upgraded version of the Corvette E-Ray's front-mounted electric motor. It has a combined 1250 horsepower and a stat sheet that'll have you seeking shelter. Oh, and it'll be available by the end of the year.
Yahoo
26-01-2025
- Automotive
- Yahoo
Rick Hendrick Buys First C8 Chevrolet Corvette ZR1 for 3.7 Million
The NASCAR Cup Series owner and Chevrolet dealer opened his pocketbook on Saturday to purchase yet another Corvette, adding to his collection of over 100 of his favorite model. Rick Hendrick spent 3.7 million to secure the first Chevrolet Corvette ZR1 produced for retail sale and sold through the annual Barrett-Jackson auction in Scottsdale, Ariz. As of 2023, Hendrick had 122 Corvettes in his personal collection, which he began in 1971 when he bought a stock 1963 Corvette that he later took his wife on their first date. This car was sold to help raise funds to start his first dealership, per the Detroit Free Press. Hendrick's love of the Corvette led him to be inducted into the Corvette Hall of Fame in 2015. "My love for Corvettes goes back to when I was a teenager, and it was the love for the car that got me into racing and the automobile business," Hendrick said. "To be honored at a place where so many of the Corvette greats are honored — it's just humbling. I never dreamed that I'd be recognized in such a way." This is not the first time that Hendrick has used the Barrett-Jackson auctions as a way to add to his Corvette collection and share his philanthropy, spending 3 million for the first C8 Corvette Stingray and 3.6 million for the first C8 Corvette Z06. The newest addition to Hendrick's collection features the new LT7; a 5.5-liter, twin-turbocharged DOHC flat-plane crank V8 engine. The LT7 engine is reported to produce 1,064hp at 7,000 rpm. At 3.7 million, the ZR1 was the highest-grossing auction item during Barett-Jackson's Super Saturday that raised 5.2 million for charity, including the Red Cross, with the funds earmarked to help aid those affected by the California wildfires and the 2024 Southeastern United States hurricanes. You Might Also Like You Need a Torque Wrench in Your Toolbox Tested: Best Car Interior Cleaners The Man Who Signs Every Car
