The practice involves replacing an engine in a vehicle with a General Motors LS series engine. This often entails substituting the original engine with a more powerful or modern LS variant, improving the vehicle’s performance characteristics. For example, an older vehicle might receive a newer LS3 engine, significantly increasing horsepower and torque.
This engine replacement offers multiple advantages, including increased horsepower, improved reliability, and a readily available aftermarket parts ecosystem. Historically, it gained popularity due to the LS engine’s compact size, relatively low cost, and substantial power potential. The widespread adoption stemmed from enthusiasts seeking performance upgrades in various vehicle types, ranging from classic cars to trucks and SUVs.
