Picking the right valvetrain for your engine can be a daunting task. Solid flat tappet, hydraulic flat tappet, solid roller, hydraulic roller; these are the choices, made even more difficult due to ...

"Bullwinkle, that trick never works. Why don't you figure out how to make hydraulic roller lifters survive big spring pressure." "Huh?" Like Bullwinkle, hydraulic roller lifters get no respect. It ...

The new buzz for hot street engines are hydraulic-roller cams. These cams offer significant advantages for additional lift and more power when properly combined with the rest of the engine combination ...

There is a long list of advantages when it comes to converting your small-block or big-block Chevy to a roller camshaft. Decades ago, only serious racers had roller camshafts, but now it's a ...

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 ...