You can slot the bearings, slot the materiel between the main feed and the cam bearing hole and it does nothing. It doesn't fix the oil timing. I've said it, and you argue the point. And that point is you need FULL PRESSURE and FULL FLOW to the Rod bearings ~70 degrees before TDC. Get on the phone and call some people who have actually made power with Chrysler stuff. You may be able to get David Nickens on the phone. Eaton will talk to you. I can't think of the Patterson kids first name but you can call him and he'll tell you the same thing I am. It's settled science and nothing you do is going to fix that.
You tube the gallery or bush the bores to stop all the oil leaking at the lifters. And if I don't mention that when you bush the bores you correct the lifter bank angles as well. That also doesn't correct oil timing, but it does reduce the volume of oil the engine uses. It's that simple.
Again, the Chevrolet system is close enough to look at. You can say whatever you want but they are close. And they oil. Figure it out. I'm trying to help anyone who is considering this ignorant claptrap that has published for decades that doesn't do anything to fix high RPM oiling. Again, if you are turning under 7500 RPM and can't oil the rods, you have some other issues. But that's about the RPM limit before you need to correct the timing.
Priority oiling didn't change much, except it made sure the mains (and therefore the rods) were oiled before the top end.
I ask again, show me pictures of rods getting knocked out and the mains out of oil and I'll show you that isn't an oil timing issue. It was something else.
If the rods come out, and the mains look normal, THAT is a timing issue. I've seen it so many times it's not funny. If the mains have oil, how do the rods not have oil???
It's been awhile since I've seen what Sanborn did and someone is supposed to email me some pictures. I know I've had him on the phone as far back as 2002 when I was first made aware of mofartchat.com and he didn't get the oil timing issue either.