Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

"Even though he has decades of experience building race-wining engines at every level, engine builder Keith Dorton of Automotive Specialists says he still works closely with the camshaft manufactures ...

Camshafts are simple devices, but important ones. Modern engines can have one or more intake and exhaust valves, and it's the camshaft's job to open valves precisely as the engine runs, supplying the ...

When it comes to modern internal combustion engines, there are two types that dominate the industry: pushrod and overhead camshaft (OHC). While pushrod engines were the stars of the show for many ...

With diesel fuel prices at an all-time high, we've been testing various products in an effort to find ways to increase the efficiency of the diesel engine. Our hope is to find results that will offer ...

Most Mustang owners want crisp low to mid-range torque, good throttle response, some semblance of fuel economy, and a Mustang that sounds cool. Of course, some want that “rumpity-rump” idle and the ...

Software keeps pace with one Nascar team's engine building. Bill Elliott, driver of the #9 Evernham Motorsports Dodge Intrepid R/T, in the pits during the Budweiser Shootout at Daytona International ...