A unique feature with the shaft mounted rocker arms such as those found on the Y-Block (as well as the FE, MEL, and LYB) Ford engines is that the solid lifter or lash adjusting versions can be measurably variable in the rocker arm ratio depending upon where the lash adjusting screw is positioned within its range of travel. Continue reading “Altering Rocker Arm Ratio By Varying The Length Of The Pushrods”
Tag: Y-Block Magazine
Rocker Arm Geometry
Rocker arm geometry is an area that’s very often overlooked when modifying an engine for increased power output and/or efficiency. Besides the obvious advantage of reducing valve stem and guide wear by minimizing the “scrubbing” action that can take place when the rocker arm geometry is optimized, the maximum or advertised lift at the valve for a given camshaft profile can also be obtained. Continue reading “Rocker Arm Geometry”