Mack Trucks has shown off its new Super Econodyne low-rpm powertrain that promises significant fuel economy improvements over existing truck engines. At a day-long event Wednesday at the Mack Customer ...

I have a 2008 Saturn Outlook with around 88,000 miles on it. Right after starting it in the driveway, it began making a weird noise, and a warning came on the dashboard that said “Reduced Engine Power ...

Starting engine dynamometer pulls at low rpm is hard on the dyno and hard on the engine. Today, engine dynamometer testing is an integral part of many HOT ROD engine buildups and product tests.

For typical overhead-valve (OHV), gasoline-fueled, street engines used in cars and light trucks, a 5,500- to 6,000-rpm redline seems to be the target speed for delivering a satisfactory daily-driving ...

What’s the best way to turn a high-powered brushless DC motor optimized for hobby use into a decent low-RPM generator? Do you take a purely mechanical approach and slap a gearbox on the shaft? Or do ...

Turbocharged engines make big torque at low rpm, but those two numbers, peak torque and its corresponding rpm, don’t tell the full story, as boost pressure isn’t solely a function of engine speed. A ...

The chart was chosen for its clarity. It represents a Detroit Diesel DD15 engine with a rating of 455 hp and 1,550 lb-ft. The engine is available in ratings from 400-505 hp and 1,550-1,750 lb-ft.