The "battle of the camshaft lifters" has been going on for years. Each design has its proponents. Those in favor of hydraulic cams cite reduced maintenance and claim that equivalently ground ...

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 ...

Selecting the right cam for your performance street/strip or even full-race Chevy engine is difficult, especially if you don’t speak the lingo. Even before taking a look at things like cam lift, ...

The continuation of this series came about after a letter from reader John Tremul requesting we take a look at another set of serious small-blocks. The primary difference between these and the ...

My 2003 Volkswagen Polo has 18,000 miles and over the last 5000 miles has developed a tapping noise from what I thought was the valve gear, as it sounded a bit like a hydraulic tappet - the noise ...