Chevrolet LSA Engine Specs

The Chevrolet LSA is a supercharged OHV V8 petrol engine produced from 2009 to 2015, a slightly detuned sibling of the flagship LS9 developed for use in more everyday (though still very high-performance) applications, including the second-generation Cadillac CTS-V, Chevrolet Camaro ZL1, and various Holden Special Vehicles (HSV) models built in Australia.

Producing 556-580hp and 747Nm of torque from 6,162cc, the LSA shares the LS9's Eaton supercharger and forced-induction architecture but with a smaller supercharger pulley and a more conservative overall tune intended for slightly more relaxed street use and greater everyday durability compared with the track-focused LS9, while still delivering supercar-rivaling performance in a comparatively practical sedan or coupe package. A compression ratio of 9.1:1, similar to the LS9, reflects the forced-induction-appropriate tuning shared across both engines.

Because the LSA was designed for broader everyday use across the CTS-V, Camaro ZL1, and HSV lineup rather than exclusively for a track-focused halo model, it has generally proven itself a robust and dependable engine in real-world ownership, benefiting from GM's extensive experience refining the shared supercharged LS architecture. The supercharger drive system and intercooler should be part of routine maintenance inspection given the additional demands of forced induction compared with a naturally aspirated LS engine, and oil quality and change intervals matter more here than on a naturally aspirated equivalent given the higher operating temperatures and cylinder pressures involved. As with other high-output LS-family engines, the factory bottom end has proven capable of supporting further power increases with appropriate supporting modifications, contributing to the LSA's popularity in the modified performance car community. Given its use across multiple GM brands and the globally distributed HSV lineup, parts availability and mechanic familiarity are good, supported by the broader LS-family aftermarket ecosystem spanning North America, Australia, and beyond.