From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

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 ...

We have already discussed here a wide list of procedures you can do yourself on your Toyota VVTi engine, from removing the valve cover to the crankshaft. In this article, our focus will be on how to ...

Testing engines is like running a marathon. There are some spots where you're way behind, and there are others where you're pulling ahead. However, the race is almost never done. Last month was one of ...

Cylinder heads are understandably a vital ingredient in any recipe for "porcupine" horsepower pie, so whether the big-block in your Corvette is being built for street performance, drag racing, road ...

Toyota Gazoo Racing is reproducing key 4A-GE engine parts for the AE86 Corolla Levin and Sprinter Trueno. The project secures the legacy of one of the most beloved driver’s cars in history. Toyota ...

I’ve never had a bad experience with a MachineArt Moto product. And the new X-Head DOHC cylinder head guards keep that record intact. Designed for the BMW R1200RT engine, they add virtually nothing in ...