With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A.Most stock cylinder heads have factory-cut undercuts of the type ...

A computer generated power stroke of an internal combustion engine, following ignition - Pathompong Thongsan/Getty Images When comparing engine specs for nearly any combustion engine automobile, we ...

Higher octane fuel resists engine knock under compression — it is not a cleaner or more powerful fuel for all vehicles. Modern knock sensors in post-2000 engines automatically compensate for ...

Joel was previously an editor at Autoblog for nearly a decade, covering cars from humble economy hatchbacks to high-end sports cars. He has extensive driving experience with plenty of track time, and ...

Westport is debuting its high-pressure CNG fuel system with Cespira HPDI technology on a Volvo VNL 300 at ACT Expo. Another high-horsepower natural-gas engine system may soon be available from ...

They look awesome, whine, and make huge power. Yes, we're talking about superchargers, and in the world of hot rodding they are the ultimate in cool. Unlike a normally aspirated engine that relies on ...

It pushed 9,000 RPM and 605 HP, becoming the most powerful naturally aspirated production engine ever built.

We may receive a commission on purchases made from links. The Duramax namesake has been alive for over 20 years and has been offered in 12 different variations. While there are some newer engines in ...