Our mechanic takes us through the cylinder head and valve train and continues his explanation of how engines really work. The Mechanic is the kind of chap who eat, sleeps and breathes engineering.

Ferrari was so proud of its five-valve cylinder heads, it changed a naming convention that ran back over 25 years. For its previous mid-engine two-seaters, the three-digit name was derived from ...

Ask any professional racer or engine builder and you'll hear that cylinder-head airflow is the most important factor in achieving the greatest peak horsepower from any engine. For years Pontiac racers ...

Now that we've explored the majority of simple, bolt-on parts for the S197 Mustang, the next logical place to turn our collective attention is to the inner working of the engine. And, no matter how ...

The 300hp 4.6-liter engine found under the hoods of S197 Mustangs is certainly the most potent bullet of any GT. The bottom end is virtually identical to the previous generation's modular engine, but ...

As the first of the rectangle-port cylinder heads that subsequently came through the years (i.e. LS3, L92), the LS7 cylinder head still reigns supreme as the best-flowing two-valve production ...