Rocker Arm Ratios Explained By Ed Smith. Ed Smith breaks down rocker arm ratios and explains how they affect valve lift, engine geometry, and overall performance. #RockerArms #EngineBuilding ...

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 ...

To call the Crane Cams shaft-mounted "Quick-Lift" design rocker arms new would not be entirely accurate. To say they have burst onto the scene and have created a lot of excitement among ...