New GM 6.6L V8 Engine Could Push Base Corvette Past 500 Horsepower

New GM 6.6L V8 Engine Could Push Base Corvette Past 500 Horsepower

The new GM 6.6L V8 engine (sixth-generation small-block) is reportedly in development, and new information suggests it will replace the current 6.2L V8 in the base Corvette. This new GM 6.6L V8 engine is expected to push the Corvette Stingray past 500 horsepower for the first time, signaling that the V8 is alive and well at General Motors.

Multiple Displacements Necessary

Like Stellantis, GM has no intention of discontinuing the iconic V8. According to reports from GM Authority, the new sixth-generation V8 engine family will come in two capacities: 5.7-liters and 6.6-liters.

The smaller 5.7L V8 is expected to be tuned for efficiency and find its way into GM pickups, while the performance-oriented GM 6.6L V8 engine will reportedly find its way into the Corvette Stingray, E-Ray, and a forthcoming Grand Sport version. This rumor was backed by Corvette insider Jason Carter, although the post has since been deleted.

The existing 6.2L V8 in the Corvette already produces 490 horsepower in standard form, so it’s entirely feasible that its 6.6L replacement will exceed 500 hp.

New V8 Must Restore Reliability Reputation

This new GM 6.6L V8 engine is crucial for GM to restore its reliability reputation. The company’s existing 6.2L L87 small-block V8 has come under fire for multiple engine failure reports, leading to a lawsuit against the company. Issues like damaged connecting rods and faulty crankshafts have plagued the 6.2L V8, with plaintiffs accusing GM of replacing some engines with units that were also faulty.

The new engines will give GM the opportunity to do away with the problematic 6.2L entirely.

Why It Matters

GM is investing heavily in the new GM 6.6L V8 engine, with almost $900 million in funding at the Tonawanda Propulsion plant. Even as GM makes strides with its EVs, the need to provide powertrain diversity is an industry trend. The overturning of California’s ban on gas-powered cars by 2035 has further motivated brands like GM to invest more heavily in V8s, ensuring the iconic engine remains a staple for the foreseeable future.

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