Horsepower and torque are all about cylinder pressure. Compression ratio, cam timing, cylinder head flow, and all the rest of the goodies that go into an engine aren't worth much if what enters the ...

If all those engine goodies don’t result in cylinder pressure, performance is sure to disappoint, and there’s more to the story than you think. To celebrate HOT ROD's 75th anniversary, we teamed up ...

Cylinder head porting is one of those garage mods that lives somewhere between speed-shop legend and flow-bench science. Also referred to as port and polish, the idea is simple: Open up the intake and ...

As big V8-powered cars like the Dodge Charger and Challenger approach the end of their lives as production cars, an altogether different sort of gasoline engine has become increasingly common on ...

Today's 4-cylinder cars offer a better combination of performance and efficiency than ever before. Although the engines themselves continue to get smaller in displacement, they're able to make more ...

View post: Thunderstorm Warning: 75 MPH Gusts, Large Hail to Slam Central US, I-29 to I-70 001-nissan-zeod-3-cyl-engine-1-jpg Wieck 002-nissan-zeod-3-cyl-engine-1-jpg Nissan ...

AMG's 469-hp M139 four-cylinder is the most powerful of its kind, but the C63 S E Performance failed commercially and is ...