lifter galley crossover tube

YR, thank you for your input.

Would a simpler solution be to use flat bearings and just machine your own deep groove to a certain degree to correct the timing? Is this the (failed) change you were talked into by your machinist buddies? I understand you also emphasized that the main feed hole and the crank hole need to line up at the critical 70 degrees for the most pressure possible. I'm sure you've brainstormed ideas on how to not drill the crank.

I do believe that the velocity issue is still true to the oil crossover tube mod. Like a stock block has almost has a venturri type effect upon #4/2. More so if you have unrestricted, full time head oiling. Whether or not it makes a difference in the big picture, I don't know.