When it comes to internal combustion engines (ICEs), it’s generally accepted that each cylinder doesn’t have more valves to ...

It has been said that the exhaust emissions from a "typical" classic carburetor-equipped street rod can be as much as 100 times that of a new '10 vehicle. That may be possible if the owner of this ...

Every engine can be tinkered with, but some stand above the crowd as ideal starting places for the tuner's dream build. Strong and hardy parts, the ability to accommodate and move large volumes of air ...

Hemi engines aren't perfect. Sorry. Half-grapefruit-shaped combustion chambers sure do let designers increase valve sizes, and in the larger displacement Hemis, these valves could probably pass golf ...

There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

Most modern gasoline and diesel-powered engines found in the cars and trucks seen on today's roadways rely on the four-cycle-engine principles developed in the late 1800s by Nikolaus Otto, Gottlieb ...

Duvernay has the highest stock output production Quad 4: the 190-hp 1991 to 1992 RPO W41. The 1993 W41 lost 10 hp due to smaller exhaust ports. I have a 1992 Olds Achieva SCX with a W41 Quad 4 engine ...

Taking care of your vehicle is vital to ensure it stays in great condition. Your brakes could give you trouble someday, or your suspension could require tinkering, inevitably leading you to an auto ...

For many cars, their real life doesn't begin at the factory, but at the moment they roll off the dealership lot, and into the hands of an owner. For car enthusiasts, modification is a cornerstone of ...