HOT ROD’s archives are chock-full of brilliant tech reports that truly are timeless. This one, drafted by Jim McFarland for our February 1972 issue, provides an extensive look at how important airflow ...

In gearhead terminology, the word hemi refers to the generally hemispherical shape of an engine's cylinder head combustion chamber. In the truest sense of the word, no automobile engine actually has a ...

Well yes, but that's largely missing the point. Many people new to racing understand that aluminum is lighter than cast iron, but don't realize how much of a difference it can make when you are ...

Cylinder head problems can quietly turn into catastrophic engine damage if ignored. From overheating and coolant leaks to warped surfaces and burnt valves, these issues often give early warning signs.

GM's famously durable 6.6-liter Duramax diesel V-8 comes from the factory with aluminum cylinder heads, but for some owners, ...

After months of teasers, Maserati finally unveiled its MC20 supercar earlier this month. At its heart sits a new twin-turbo V-6 engine dubbed the "Nettuno," which the Italian company pointed out uses ...

One of the problems with running the proverbial ultimate cylinder head test that we did a few years back (a.k.a. MM&FF's Ultimate Guide to Cylinder Heads), is that the performance world continues to ...