To begin, we know that both intake and exhaust systems operate with un-steady, pulsing flow. On the intake side, by comparison, this is probably more important to consider since (particularly when ...

A breakthrough in diesel engineering changed how heavy trucks delivered power, ultimately reshaping torque, gearing, and real ...

The Lexus LFA's legendary 4.8-liter V10 revved to 9,500 rpm and delivered one of the greatest naturally aspirated engine ...

Readers of this series will discover new thoughts and ample reinforcements for building consistent, powerful, and competitive Saturday-night engines. Jencks lays the hard-core foundation and McFarland ...

Diesel engines are popular these days due to their unflinching willingness to handle high towing capacities and deliver lots of torque from low revs. In truck applications, a healthy amount of low-end ...

The refreshed 2022 GMC Sierra has officially debuted, and while the big news revolves around the automaker’s two new trims—the uber-premium Denali Ultimate and luxury off-roader AT4X—there’s another ...

The HT383 has been available for a number of years now, and it's an excellent repower option for you GM (on non-GM) truck or 4x4 thanks to its rated 325 hp at 4,500 rpm and 415 lb-ft of torque at ...

Volvo's new XE13 and Eco-Torque powertrain packages will make a big difference to drivers in ways they will never know — and a few they will. What a difference a little extra engine torque makes. I ...

Try this for kicks. The next time you’re surrounded by your gearhead buddies, ask them to explain the difference between horsepower and torque. The participants will immediately divide into “pro ...