If the Chevrolet Corvette is known for one thing, it's speed. Speed is relative, though, and our expectations have grown over the years. Every Corvette generation has beefed up the specs, and one ...

The Trax is a pragmatic, usable, and competent subcompact utility with a realistic price tag and a modern feel for everyday driving.

An engine depends on perfect timing the same way a symphony depends on a conductor. Every valve opens at the exact moment it should, every piston moves in perfect rhythm, and everything stays ...

In 2010, the Mustang was released with a new look, but the same powerplant that had lived between the fenders since 2005. The outgoing three-valve 4.6-liter had served the Mustang world well, but its ...

VTEC is an acronym for a variable valve-timing system used on Honda and Acura models since 1989. The full name is variable valve timing and lift electronic control, and the first U.S. model with VTEC ...

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

Precise ignition timing is essential for high-performance engine tuning and ensuring your small-block or big-block is delivering every horsepower within its capability. Since the era of poodle skirts, ...

The inlet and exhaust valve timing of a piston engine plays a large role in engine performance. Many modern automotive engines have some sort of variable valve timing, but the valves are still ...

Hello Paul, I drive a 2003 Toyota Camry with a 2AZ-FE engine. Recently, my engine has started making a rattling noise when I start it, especially in the morning. The noise is becoming more noticeable, ...

Editor's Note: Way back in March of 1998, GMHTP ran "Opti-Spark" by Ray Bohacz, an engineering-level dissection of GM's Opti-Spark distributor. This evolutionary ignition component was a bridge ...