To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

Good cylinder heads are necessary to the production of serious horsepower, but what exactly constitutes a "good" cylinder head? Typically, we identify them with big, impressive flow numbers.

Stepping into a hot shower soothes your sore muscles and makes the stress of the world melt away, even if it's just temporary. But spending too long under a high-flow shower head may cause at least a ...