Thanks Guys!! I more or less knew this stuff once. :D It's coming back to me now, and I get what you're saying. Center/center at 50% lift. I do have the old MP "Bible" so will take a look at that as well.
If you want to understand geometry and not the crap that Chrysler put out back in the day, go to b3racingengines.com and read his tech pages.
In a shaft system, the only affect pushrod length has is the affect the length the adjuster hangs out affects rocker ratio.
Every correction has to be done with shaft location, and pushrod length is a function of that. Nothing else. That's why the actual adjuster protrusion is .287 inch.
