The humble LS engine remains the undisputed king of swaps, in case you haven't noticed, but why? Spoiler alert: it's about a ...

At this point, mixing and matching the Big Three U.S. auto manufacturers' V-8 powerplants, both internally and across all brands of vehicles—engine-swapping, if you will—is a tried-and-true practice.

It turns out everyone loves a good deal on horsepower.

Ford introduced the EcoBoost engine for the 2010 model year, and while the idea of a turbocharged engine and direct injection fuel delivery was not new, it brought a breath of fresh air to the scene.

We walked the 2026 Holley LS Fest West in Las Vegas and found LS and LT swaps in everything imaginable, proving the LS engine still reigns supreme in modern hot rodding.