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

Duane said
All I can say is what Jada said. It is beyond you to understand. You understand how to correct the problem. You understand the leaks at the lifters being a problem. You don’t understand the why. And I don’t know how else to explain it to you. Yes Glidden was a mortal man. The true test of any mods is the results of testing. Sanborn did the testing. AFAIK Bob Mullen designer of the w2 head and the crossover circuit and tubing the block were integral to Gliddens
program. The lifter leaks are not a problem in the Chev because they are not fed from
Main bearing supply. A high volume pump has plenty of volume to feed everything.
The Chev just had a better distribution of it.
The addition of the set screw at #1 main,and the turning of 2&4 cam bearings and depending on rules and lifter choice, stop feeding the entire valvetrain off of those 3 main bearings. There is not one drilled feed passage (other than the cam journals)on the chev that comes off a main bearing. It is clear to see in the pic I posted.
I cannot understand how you can’t see that,
or you just don’t want to see it because like Jada said, you want to deny it.

Then stopping the leaks at the lifters is priority number 2. Getting the inlet side of he pump corrected is number ONE.

Like I said, the chevy oils, the Chrysler doesn't. It ain't about oil velocity or any other bullshit you or anyine else posts,

You are a follower. You don't question orthodoxy even though its blatantly wrong.

You are dealing with not enough oil due to pickup limitations, excess leaks at the lifters and feeding the rockers off the main bearings.
The crossover fixes NONE of that, like I've said for decades.

Seems to me that its YOU who doesn't get it.

And you still haven't learned about oil timing. I slot my bearings but at 8500 where race engines run at doesn't fix the issue.

Keep doing what you are doing. You don't have a ******* clue what you are talking about except repeating what your hero's say.