IMM Engines 408 build

Can you measure how wide the sweep is? Your report of 'wide' may not be all that wide after all. And to your original question, no way to tell you to move the rockers up or down without seeing the angle of the rocker to the valve tip at mid lift. (Mike may just know the answer from long experience with those particular parts...)

I can... but would have to take the valve cover off..lol
I'll keep the idea in my mind and will get to it in the near future... I might have to remove a valve cover in order to switch out a breather grommet.