The LS engine’s bottom end is the foundation for its legendary power and durability, but getting it right means mastering clearances, torque specs, and oiling strategy. Whether you’re chasing 500 hp ...

GM's LS engine is a powerhouse, thanks to great-flowing heads that enable tremendous horsepower and high-rpm performance. But while the LS is becoming a more popular swap choice for earlier, pre-C5 ...

An LS swap can transform your classic or project car into a high-performance machine, but success comes from more than just dropping in the engine. From choosing the right variant to upgrading cooling ...

While some Gen IV engines do use cathedral port cylinder heads, pretty much all are of the later, LS6 design. By 2009, cathedral port use was mostly restricted to just the 5.3L engines while all but ...