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 ...

Can roller rocker arms actually help add horsepower? The mechanically savvy will likely consider that question and say: “If you have more lift, and open the valves more, then you’ll make more power.

I'm in the process of building a 348 Chevy stroker [W-series early big-block] engine with a 4-inch stroke crankshaft, 6.135-inch [center-to-center] H-beam stroker rods, a 0.030-inch overbore, and a 10 ...

Aftermarket valvetrain parts are on the rise in the diesel segment. Harland Sharp is getting in on the game with its new D-Force product line, which includes roller rockers for 6.6L Duramax, Cummins ...

There’s a very distinct trickle-down system that flows from the racetrack directly to the street. Everything from intake manifolds to the latest exhaust header technology is fair game, and this ...