There are very few sounds sweeter to a gearhead than a small-block spinning past 8,000 rpm. For anyone who appreciates internal-combustion engines and horsepower, a race engine spinning at high rpm is ...

Hydraulic roller cams have plenty going for them, including power, reliability, and reduced friction. Heck, even the OEMs have embraced the benefits of hydraulic roller cams. Often thought of as the ...

The Cummins 6.7L turbo diesel engine entered its fifth generation in 2019. In addition to improved output of up to 400 horsepower and 1,000 pound-feet of torque, the new engine's valve train featured ...

If there is one performance limitation to hydraulic roller lifters it is the maximum rpm capability they can maintain in race applications. The internal hydraulics of standard roller lifters are ...