Originally Posted By poboyengineering
I just re-read the tech write-ups on your website for about the 10th time, and feel like I am finally getting a handle on what you're saying.
If I'm right, then with a cam (lift) change, won't the fulcrum point on the rocker need to be re-calculated and corrected since the perpendicularity will be at a different point?

That's correct, Tom. Valvetrain geometry is not just the rocker arm, or the valve length, or the valve lift. Everything in the valvetrain plays a role. This is one of the points I've being making for a long time. Unless it is dead stock, something will have to change for it to be perfect.

Mike Beachel

I didn't write the rules of math nor create the laws of physics, I am just bound by them.