General Motors has been quite busy developing the C8 Corvette platform even after the debut of the 2020 Corvette Stingray. Since the first-ever mid-engined Corvette was revealed, the 2023 Corvette Z06 and 2024 Corvette E-Ray have followed, with further variants like the 2025 Corvette ZR1 yet to come. Now, GM Authority has exclusively learned an interesting detail regarding the upcoming ZR1’s powertrain.
Sources close to the matter have exclusively told GM Authority that the ZR1’s 5.5L V8 LT7 engine will feature AFM, or Active Fuel Management. Notably, the naturally aspirated 6.2L V8 LT2 gasoline engine used in the C8 Stingray and C8 E-Ray also features this technology, while the high-revving 5.5L V8 LT6 gasoline engine used in the C8 Z06 does not have AFM.
This is an interesting development considering that the upcoming LT7 engine is largely based off the LT6 engine. While new details regarding the C8 ZR1 are still forthcoming, the LT7 will boast a set of turbochargers that take the mid-engined Vette’s performance chops to another level.
In other recent 2025 Corvette ZR1 developments, GM Authority spy photographers recently captured a glimpse of the upcoming twin-turbo monster. Although this unit is covered in extensive camouflage, there are still quite a few key characteristics that can be spotted. Starting up front, there appears to be a giant front splitter, along with what looks to be a large central ridge running vertically down the center of the front air intake.
Out back, this C8 ZR1 prototype features a rear fascia similar to that of the C8 Z06, complete with the center-mounted exhaust tips and the Z07’s sculpted wing. Speaking of which, active aero is expected to be optional for the new upcoming ZR1.
Of course, this 2025 Corvette ZR1 prototype was caught testing with a C8 Z06 and C8 E-Ray, along with a Porsche 911 GT2 RS.