A complete guide to the history of the LS and Vortec engine brands, the differences between them, and their components. Back in the early 1990s the Gen II LT1 and LT4 engines powered GM's hottest ...

Although Vortec engines fall under the "LS" branding, they aren't actually the exact same as more traditional LS engines made by General Motors.

This American power unit has a track-record unlike any other modern V-8 engine.

When GM first introduced the LS series of engines back in the late ’90s, these all-aluminum mills set the Chevy performance world on end, and since then it’s only gotten better. The 346ci LS1 begat ...