Chevrolet LS9 Engine Specs

The Chevrolet LS9 is the ultimate factory supercharged LS engine and the halo version of the classic LS family. Introduced for the Corvette ZR1, it took the proven 6.2-liter LS foundation and elevated it to supercar territory with forced induction, extreme output, and serious engineering upgrades.

Chevrolet developed the LS9 from the LSA and LS3-era architecture but fitted it with stronger internals, a supercharger, intercooling, and application-specific hardware to support far greater output. The result was 638 HP and 819 Nm of torque in factory trim, figures that made the C6 Corvette ZR1 one of the most powerful production cars in the world at the time. Even with that performance, the LS9 kept the familiar compact pushrod format that defines the broader LS concept.

In real-world terms, the LS9 is brutally fast, highly collectible, and far more specialized than mainstream LS engines. It is not the typical swap budget choice or casual daily-driver V8. Instead, it stands as the top-end expression of what Chevrolet achieved with the LS architecture before the LT-era engines took over.