hard or soft copper line for a valley oil gallery bypass line?

Newbomb Turk said
Right. We will agree to disagree and I'll continue to point out the fallacy of oil velocity and such. Because that is wrong.

I don't care who publishes it or who used it. Claiming you use it for anything other than supplying oil to the drivers side lifter bank is nonsense.

I can't help that you don't like me being here under another name. That's on you.

And its clear that what's good enough for you isn't good enough for me.

BTW and IIRC the guy who wrote the "How To Build A Chrysler Stroker" (I'd type out his name but the book is back in the library and I don't want to walk back in there and get it and I don't want to butcher his name) isn't claiming its a velocity issue any more.

FWIW, Chrysler put that oil feed port up there for the dry sump guys to get the in at the front.

If the pump and the galleries are sized correctly, adding another oil feed does absolutely nothing. It's not one feed is feeding two mains and the other is feeding two mains. All that is coming off the same feed. Unless you pull the oil off before it gets to the main feed.

In your last paragraph you say the front oil boss is for dry sump. Yes you could use it that way, if class rules allow. You say that in front oiling, that all the oil is from one feed, unless you pull the oil off before it gets to the main. Well you have Sanborns notes. You pull the feed out of the filter area. That is before the mains.
Every part of the motor is from one feed. The problem is the distribution. I don’t understand how you don’t see the issue with
#1 main, but you understand how the grooved journal camshaft cause main bearing failure. Its the same problem. A small
Diameter feed passage off of a main bearing,
Trying to feed a galley full of leaks. That main never gets full pressure. 1 main is trying to feed the entire lifter galley from a 9/32 feed passage into a 1/2 passage full of lifter leaks. The oil speeds down the passenger side galley trying to keep up. That is the heart of the problem. Plugging that galley stops the majority. Front oil probably evens out the pressures. But no way it can’t go to the mains because high pressure goes to low pressure.