The term refers to a specific modification performed on a General Motors roadster: the Saturn Sky. It involves replacing the vehicle’s original engine with an engine from the GM LS family, a series of high-performance V8 engines. For example, a Saturn Sky originally equipped with a 2.4L four-cylinder engine or a 2.0L turbocharged engine might be retrofitted with an LS1, LS3, or similar V8 engine.
This modification offers a significant increase in power and torque compared to the factory engine options. The benefits include improved acceleration, enhanced driving experience, and a more aggressive exhaust note. Historically, such engine swaps have been popular among automotive enthusiasts seeking to personalize and enhance their vehicle’s performance beyond factory specifications.