push rod length help

I've spoken to Dave at Hughes. So long as you let him tell you how everythign is, you're fine. Apparently it worked for your setup. However in terms of validity... This line is true "The rocker being centered on the valve tip shows that your rocker geometry is good which has nothing to do with the push rod length on an LA motor." That statement also makes that "straight line" theory invalid. If the geometry is good, meaning sweap is narrow and the tip of the rocker is centered at 50% of lift, then the pushrod is simply a placeholder. As a place holder, you need the minimum thread exposure, and then fill in the distance. The last hydraulic roller/LA RPM headed engine I did used the shortest pusrods I've ever used. I believe around 6.5" IIRC. There is no way you'll have a straight line "at 55%". Think about the arc the adjuster screw traces as the valve is opened and then explain how 55% becomes somehow significant.