Chevrolet Retires the LS9 Crate Engine: A 638-HP Supercharged V8 Bows Out

Chevrolet has quietly removed the LS9 from its crate engine catalog, ending availability of a supercharged 6.2-liter V8 that became a favorite among builders. The LS9, which powered the C6 Corvette ZR1, was rated at 638 horsepower and offered as a turnkey package for custom projects. Its departure marks another step in the gradual retreat of large-displacement, forced-induction V8s from the automaker’s parts lineup.

Unlike modern LT-series engines, the LS9 used an older architecture with a 9.1:1 compression ratio and a 1.9-liter Eaton supercharger. That combination delivered strong low-end torque and a distinctive whine, making it a popular choice for restomods and track cars. Enthusiasts valued its relative simplicity and the ease of swapping it into a wide range of chassis.

Chevrolet has not announced a direct replacement for the LS9 in the crate engine program. The move aligns with broader industry trends toward smaller-displacement, turbocharged, or electrified powertrains. For now, builders seeking a comparable supercharged V8 will need to look to the aftermarket or consider newer LT-based offerings.