General Motors is about to shake the automotive enthusiasts with the arrival of a brand new sixth-generation small-block V8. The legendary Corvette could thus be offered a 6.7-litre engine, a promise of breathtaking power and performance.
GM is not sparing any expense in developing this engine, which will be deployed in a multitude of vehicles, including the famous Chevrolet Corvette. According to a report from Corvette Blogger, relaying information from GM’s parts book, the upcoming 2027 Corvette Grand Sport could be equipped with this new LS6 engine. With an impressive displacement of 6.7 litres, it is expected to redefine the standards of the sports car.
This engine, which we can already imagine roaring on the roads, is announced to be made of aluminium, with overhead valves and a fuel injection system that is both direct and port. Previously, rumours suggested that GM would opt for a more modest 5.7-litre version intended for models such as the Chevrolet Silverado 1500. However, it is indeed the Corvette that should benefit from this increased power, adjusted to maximise performance and sensations.

A Mythical Heritage: the Small-Block
The small-block V8 made its debut at GM in 2013, and now a new generation is on the horizon. This sixth-generation engine will begin to equip GM’s pickups as early as 2027 before being integrated into other iconic models. To prepare for this revolution, General Motors has invested the staggering sum of $579 million in its Flint facilities, with even more ambitious expansion plans for the future.
The promises surrounding these new engines are enticing. Currently, the 5.3-litre V8 develops 355 horsepower and generates a torque of 519 Nm. The more muscular 6.2-litre version reaches 420 hp and 623 Nm, while its supercharged variant can reach dizzying heights with up to 682 hp and 885 Nm. Just imagine what a 6.7-litre engine could do in a Corvette; it would be impressive!
But don’t expect a consumption explosion either. GM assures that the increase in power will not come at the expense of efficiency. However, the future of the small-block V8 in terms of electrification remains unclear. While the manufacturer has decided to scale back some electric initiatives, hybridisation is on the rise. It would therefore be surprising not to see some level of electric assistance in certain upcoming models.
In summary, the Corvette Grand Sport could be preparing to enter a new era, that of pure muscle, while flirting with modern technologies. Stay tuned for upcoming announcements, as this promise of 6.7 litres could well disrupt the landscape of sports cars!



