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

At this point in time I would not recommend it either. I have never done that mod myself
for reasons already explained. I have done the tubing of the galley because it’s easier to do imho. But I find the oil mods in the stroker small block book even better.
But reading what the crossover is supposed to accomplish, makes sense to me and is very similar to what Sanborn had success with as well. You have acknowledged that you are posting under a new name for reasons only you know. We have had this discussion previously, so I will bow out of this conversation as it has turned to insults.
I wish you all the best yellow rose.


Now I have to go dig out that book to refresh my memory