General Motors isn’t done with the V-8 just yet. Even as electric cars steal the spotlight, GM is putting serious money $854 million, to be exact, into developing a brand-new family of small-block V-8 engines. It’s a move that says the company still believes there’s plenty of life left in good old combustion.
According to reports from GM Authority, this sixth generation of small blocks will debut in two sizes: 5.7 liters and 6.6 liters. The idea is simple: one built for efficiency, the other for raw power.
Two Engines, Two Purposes
While GM hasn’t revealed official specs yet, insiders suggest the 5.7-liter version is headed for the Chevrolet Silverado 1500 and other full-size trucks. This engine will focus on fuel economy without losing that familiar V-8 character. GM President Mark Reuss has already hinted at a six-percent efficiency boost compared to the outgoing fifth-gen motors, a big deal in a segment where every drop of fuel counts.
The 6.6-liter version is shaping up to be the performance hero. Word is, it’s destined for Corvette models, including the upcoming C8 Grand Sport, and possibly even future versions of the Stingray and E-Ray. Think of it as the heart of GM’s next wave of muscle.
Corvette Rumors Heat Up
The Corvette connection isn’t just speculation pulled from thin air. A post by an alleged insider in a Corvette enthusiasts’ Facebook group, later amplified by Torque News, claimed the Grand Sport will get the larger 6.6-liter V-8. Around the same time, photographers spotted wide-body C8 prototypes testing with their engines hidden under covers. Coincidence? Maybe not.
When multiple sources start pointing to the same displacements, it’s usually a sign that something real is cooking inside GM’s test labs.
Saying Goodbye to the Old Guard
With new engines on the way, several long-running small blocks are nearing retirement. That includes the 5.3-liter L84, 6.2-liter L87, 6.6-liter L8T, and the LT2 and LT4 that power current Corvettes and Camaros. The new lineup will bring lighter materials, better cooling, and smarter fuel management, keeping the V-8 relevant for years to come.
Why This Still Matters
At first glance, launching new V-8s in 2025 might seem out of step with the times. But GM isn’t just chasing nostalgia; it’s protecting a piece of its DNA. The small-block V-8 has been the soul of GM performance for seven decades. Rather than letting it fade quietly, the company is updating it for a cleaner, more efficient future.
Electric cars may dominate headlines, but the unmistakable rumble of a V-8 still stirs something in drivers. And with this next generation, GM is making sure that sound and the feeling that comes with it won’t disappear anytime soon.
