Multi-angle valve jobs are the most common way to make a valve more aerodynamic and make the head more efficient. A multi-angle valve job puts extra cuts on the valve near where it mates with the ...

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.

"After many years of involvement with the early automobile manufacturers, Harry Weslake founded Weslake and Company in 1934 to act as consultants to the makers of internal combustion engines. Over the ...

Cut valvetrain weight and scream past redline. PBM's titanium valves for Chevy and Ford heads stabilize high-revving race ...

From the October 1987 issue of HOT ROD: A Super Duty conversion kit that could give your Fiero the kind of performance its styling implied. Pontiac's Super Duty 4-cylinder engine has established a ...

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 ...

Cylinder head porting is an advanced area of car tuning, so to help you get around what it all means, we take a closer look at the sure-fire way to improve an engine’s performance potential. You may ...

I worked as a machinist in an automotive machine shop in the early 1980s before my career took me into the aerospace sector. The shop's high volume of mundane engine rebuilds and turning brake drums ...