A properly tuned engine is an incredible mix of components all moving in harmony. Air, fuel, and metal all working together to produce that precious magic we gearheads call torque. A critical factor ...

If we were all die-hard gearheads, we'd all run solid cams. A solid coupling between each cam lobe and pushrod makes the valves move directly in response to the lobe profile. That means the lobes can ...

Before the implementation of hydraulic lifters to keep the engine's valves in proper working order, regular adjustment was required to maintain the critically necessary clearance in the valvetrain.