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 ...

It's no secret that adding duration and valve lift helps make power. But besides changing camshafts, there is another way to modify valve events-change the rocker-arm ratio. Ford V-8 rocker ratios-at ...

In the 1980s General Motors shifted away from small holes in the cylinder head and pushrod guide plates instead to what they refer to as “guided” rocker arms. These stamped rocker arms use two small ...

Differences in the design of overhead valve (OHV) engines and overhead camshaft (OHC) engines mainly have to do with the ...

When most of us think about performance parts, roller rockers are usually not the first parts to come to mind. However, a good set of roller rocker arms can not only reduce friction, but also they are ...