The Chevrolet Corvette could get a larger 6.7-liter V-8 engine in 2027. GM is developing the sixth-generation small-block V-8, and

General Motors is spending a ton of money on a sixth-generation small-block V-8 engine. That new engine will power a range of vehicles, including the Chevrolet Corvette. It should also be available in two sizes, meaning the company’s iconic sports car could get an even bigger engine.

According to a new one Corvette blogger report, citing information from GM’s parts book and “a person close” to the automaker, the sixth-generation LS6 engine will have a displacement of 6.7 liters – 409 cubic inches. That new engine will likely appear in the 2027 Corvette Grand Sport.

The report shares an image from the parts book that labels the engine as aluminum, with overhead valves and direct and port fuel injection. Previous rumors suggested that GM would use the smaller engine, a new 5.7-liter engine, in vehicles like the Chevrolet Silverado 1500.

The larger engine will reportedly power the Corvette, which GM will tune for power and performance. We’ll likely see the 6.7-liter V-8 in a future version of the Cadillac CT5 as well. The CT5-V Blackwing is a performance monster that could use a bigger engine and more power.

The iconic small block

GM introduced the fifth-generation small-block V-8 in 2013. The sixth-generation engine will arrive in GM’s full-size pickups starting in 2027 before rolling out to other models. In 2023, GM announced it would invest $579 million in its Flint Engine Operations to build the sixth-generation V-8, and earlier this year the company invested even more money.

GM promises that the new engines will deliver more power than the current series. The current 5.3-liter V-8 produces 355 hp and 383 lb-ft of torque. The larger 6.2-liter engine produces 420 hp and 460 lb-ft, while the supercharged version produces a whopping 682 hp and 653 lb-ft.

According to the car manufacturer, the increase in power will also not harm efficiency. It’s also unclear whether GM will pair the engine with any form of electrification. As the automaker pulls back on some of its electric vehicle efforts, hybrids are only becoming more popular, and we expect some vehicles will have electric assistance.