2025 Corvette Zr1 Lt7 Engine. Chevrolet’s engineers have pushed the boundaries of engine development with the lt7, building on the foundation laid by the z06’s lt6. Introducing the 2025 corvette zr1, the fastest, most powerful corvette ever.

The lt7 incorporates twin turbochargers for the first time in a factory corvette,. The lt7 has some upgrades.