The rocker arm employs the use of a fulcrum or pivot to increase the cam lift by a given ratio. That increase in lift is the result of moving the pushrod pivot point closer to the fulcrum. That ...

When trying to decide between two camshafts for an engine that will spend a majority of its life operating at low-to-moderate rpm on the street, it's better to err on the side of caution. That means ...

There's nothing like testing, testing, testing, when looking for that last bit of power. Of the four possible combinations of rocker arms, all four were practically identical in the lower rpm ranges, ...

An engine's power production is directly proportional to its air-processing capacity. Internal-combustion engines consume both fuel and air, but the air is far more difficult to ingest than the fuel.