We build a 491-hp Vortec/LS engine, but with a lightweight GM aluminum LM4 block and an affordable GM rotating kit.

GM's 5.3-liter Vortec doesn't have the LS' performance reputation, but it's a capable small-block V8 all the same, as its ...

The LS and Vortec engines are well-known to be under the hood of GM models, but there are key differences between them. Here's what you need to know.

Despite the difference in engine displacement, these two GMC engines are surprisingly comparable in performance - except in one specific area of capability.