The LS engine family is one of the most in-demand platforms we stock at McClain Auto Part. General Motors built the LS series across several distinct variants, and each one has its own demand in the replacement and performance build market. The LS1 is the original small block that powered the C5 Corvette and fourth-generation Camaro and is one of the most popular swap candidates in the country. The LS2 is the upgraded displacement option found in the C6 Corvette and GTO. The LS3 powers the C6 Corvette base model and Camaro SS with 430 horsepower from the factory. The LS6 high-output version is a top choice for dedicated performance builds. For truck applications, the iron block LQ4 and LQ9 offer a cost-effective LS foundation with strong torque output. The L92 and L99 are the later aluminum variants that brought variable valve timing into the platform. Whatever variant your build or replacement requires, we source verified low mileage LS units from clean donor vehicles, compression test every cylinder, and confirm exactly what is included before the engine ships from our Cleveland warehouse.