Excessive valvetrain chatter, oiling issues, and the occasional bent valve from over-revving the engine can all be attributed to improper valvetrain setup. Setting up the valvetrain on your mill doesn ...

While on paper our Boulevard Bruiser ("Ground & Pound," October '09) seemed well at home in the upper rpm. A closer look revealed a less-than satisfactory issue with valve float and subsequently a ...

Roller rockers are not glorious parts. They look trick, but they live a pretty dismal life, working feverishly, always trying to keep things stable. Glory's one thing, but are they worth the cost?

An engine that just doesn't perform as it should at high speed on the dyno or racetrack can induce a series of checks that usually first includes measuring the pressure and volume of the fuel being ...

We’ve written about the various aftermarket aerodynamic parts for General Motors vehicles that Quebec-based company ACS Composite has on offer on a few different occasions in the past. The company, ...