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The 2027 Chevrolet Corvette Stingray is about to get a significant upgrade, with Chevrolet introducing an all-new LS6 engine that promises more power, improved durability, and a nod to Corvette’s legendary history. This mid-engine marvel, which has been turning heads since its 2020 debut, is set to take performance to a new level, solidifying its status as America’s sports car.
Since the C8 generation launched in 2019, the Corvette Stingray has proven that American engineering can compete with the best in the world. For the past seven years, the Stingray has relied on the trusty LT2 V-8, a 6.2-liter engine that delivered up to 495 horsepower and 470 pound-feet of torque. While the LT2 has served the Corvette faithfully, it’s time for a much-needed refresh. This update comes not only to the base model but also to the popular Z51 package, bringing more power and refinement to the table.
Internet rumors had suggested a manual transmission might be in the cards, but alas, that’s not the case. However, what Chevy has delivered is something arguably more exciting for performance enthusiasts: the return of the legendary “LS” moniker, albeit in a new and improved form.
The LS Returns (Sorta)!
The high-tech LT2 pushrod V-8 has been a solid performer, but it’s being retired in favor of the new LS6 engine. This isn’t just a simple engine swap; it’s a significant engineering update that brings more power and a connection to Corvette’s storied past. The LS6 takes its name from the sixth generation of Chevy’s small-block V-8 family, paying homage to the engines that defined American muscle for decades. Chevy couldn’t use the LT6 designation, as that’s already reserved for the Corvette Z06’s naturally aspirated flat-plane crank engine, which is a completely different beast altogether.
What’s truly exciting is that the LS6 marks the return of gasoline V-block engine production to Flint, Michigan. This production had ceased in 2020 with the departure of the 3.6-liter “High Feature” V-6. The new LS6 is also set to power the brand-new 2027 Corvette Grand Sport, making it a cornerstone of Chevy’s next-generation Corvette lineup.
The Changes Between LT2 and LS6
The shift from the LT2 to the LS6 brings a substantial bump in performance. Horsepower is set to climb to 535, and torque will increase to 520 pound-feet. That’s a gain of 40 horsepower and 50 pound-feet, respectively, transforming the Stingray’s already impressive performance envelope.
How is Chevy achieving this? The magic lies in a new, longer stroke. The LS6 features a 3.94-inch stroke, a significant increase from the LT2’s 3.62-inch stroke. This larger stroke increases the engine’s displacement from the LT2’s 6.2 liters (376 cubic inches) to a robust 6.7 liters (409 cubic inches). This larger displacement, combined with other enhancements, allows for the increased power output.
Furthermore, the compression ratio is also getting a boost. The LS6 will feature a 13.0:1 compression ratio, up from the LT2’s 11.5:1. This higher compression ratio helps extract more energy from the fuel, contributing to the overall performance gains. However, this higher compression also means the engine will demand premium fuel to operate optimally and avoid detonation.
Intake and Injection Systems
The intake system has also received a significant overhaul. The LS6 features a new tunnel ram-style intake manifold that’s designed to optimize airflow. This new intake feeds air from a larger throttle body into high-velocity intake ports. But the real innovation here is the dual-injection system.
The 2027 Corvette Stingray will feature both direct injection and old-school port injection. At lower loads and part throttle, the port injection system plays a crucial role in reducing particulate emissions. This addresses a known issue with direct-injection-only systems, where carbon buildup can occur on the back side of the intake valves. Without port injection to “wash” the valves, small particles from the positive crankcase ventilation (PCV) system can accumulate over time, potentially affecting performance and emissions. The port injection in the LS6 helps to mitigate this issue, though it won’t eliminate it entirely.
Exhaust Systems
The LS6 will exhale through one of two available exhaust systems. The standard setup will feature four exhaust tips, with two exiting on each side of the rear bumper. The optional performance exhaust system will also have four tips, but they will all exit from the center of the bumper, a signature Corvette design cue.
Both exhaust systems will feature active valving to control sound levels, allowing drivers to enjoy a more subdued experience during cruising and a more aggressive, visceral tone during spirited driving. Interestingly, Chevy has confirmed that there will be no difference in power output between the standard and optional exhaust systems. Both will deliver the full 535 horsepower and 520 pound-feet of torque, allowing drivers to choose their exhaust based on sound preference rather than performance gains.
Z51 Package Upgrades
For those who plan to take their 2027 Corvette Stingray to the track or tackle winding canyon roads, the Z51 package has received some significant updates. These enhancements are designed to further improve the car’s handling and performance capabilities, complementing the new LS6 engine.
Perhaps the most significant change to the Z51 package is the new final drive gearing. The Z51 will now feature a 5.56:1 final drive ratio, a notable increase from the outgoing model’s 5.17:1. This change will result in quicker acceleration off the line and throughout the lower gears, helping the Corvette put its newfound power down more effectively.
In the tire department, the 2027 Z51 will adopt Michelin Pilot Sport S5 tires. These tires represent an evolution of the highly regarded Pilot Sport 4S rubber that previously came with the package. The Pilot Sport S5 likely offers improvements in grip, handling, and wet-weather performance, further enhancing the Z51’s track-ready credentials.
The aerodynamic elements of the Z51 package have also been refined. The rear wing has been tweaked to provide improved high-speed stability, ensuring the car remains planted and confidence-inspiring at triple-digit speeds. Complementing these aerodynamic and mechanical upgrades, the chassis has been retuned to better match the increased grip from the new tires and the higher engine output from the LS6.
While Chevrolet hasn’t released all the detailed specifications for the 2027 Corvette Stingray Z51, these updates clearly indicate a significant performance focus. Both the coupe and the retractable hard-top convertible body styles will continue to be available, offering customers their preferred configuration.
The 2027 Chevrolet Corvette Grand Sport
As mentioned earlier, the new LS6 engine will also power the 2027 Chevrolet Corvette Grand Sport. This marks a significant moment for the Grand Sport nameplate, which has historically been a track-focused variant bridging the gap between the Stingray and the high-performance Z06.
The 2027 Grand Sport will feature the same LS6 engine as the Stingray, but it’s expected to receive additional performance enhancements that differentiate it from the base model. These enhancements will likely include the Z51 package’s aerodynamic and chassis upgrades as standard, along with potentially wider tires, upgraded brakes, and additional cooling improvements.
The Grand Sport has always been about offering a track-ready Corvette that’s more accessible than the Z06. With the LS6 engine, the 2027 Grand Sport promises to be the most potent iteration of this iconic model yet. It will combine the everyday usability of the Stingray with the performance capabilities that enthusiasts crave, all wrapped in a visually distinctive package.
The 2027 Corvette ZR1 and ZR1X
While the focus of this article is on the 2027 Corvette Stingray and Grand Sport, it’s worth noting the ongoing evolution of the C8 Corvette lineup. The extreme performance variants, the ZR1 and the limited-production ZR1X, continue to represent the pinnacle of Corvette engineering.
The ZR1, positioned at the top of the Corvette hierarchy, delivers track-focused performance that rivals exotic supercars from around the world. With its potent powertrain, advanced aerodynamics, and track-honed suspension, the ZR1 is a testament to Chevrolet’s commitment to pushing the boundaries of performance.
The ZR1X, as a limited-production variant, offers an even more exclusive ownership experience. These special editions often come with unique features, upgraded components, and collectibility that appeals to collectors and enthusiasts seeking the ultimate C8 Corvette.
The Future of the C8 Corvette
The 2027 model year represents a significant milestone for the C8 Corvette generation. With the introduction of the LS6 engine for the Stingray and Grand Sport, Chevrolet is clearly committed to the mid-engine Corvette platform. The Stingray, America’s sports car, is getting a substantial performance upgrade that will keep it at the forefront of the segment. The Grand Sport is poised to become an even more compelling option for track enthusiasts, while the Z06 and ZR1 continue to represent the pinnacle of Corvette performance.
Chevrolet has also been exploring electrification in the Corvette lineage. While the 2027 models we’ve discussed here remain gasoline
