Junkyard LS swap engines are great, but they are ugly and could use a small performance boost. We show you how to clean one up and add the right parts to make it look, and perform, better.

GM utilized the LS engine-coded V8s primarily for its sportscar lineup. On the other hand, the automaker used Vortec engines in its pickup trucks and SUVs. While LS and Vortec engines share many ...