lifter galley crossover tube
I "think" YR is not talking about the passages in the block. He's talking about the passages in the crank, feeding the rod bearings. What he's saying makes sense to me. If, and only if you are one who is running around at very high (for street and multi-use engines) rpms. The "average guy", and even most above average guys, will never need to worry about it. Use an engine and it wears. Use it harder and it wears faster. So bearings losing crush and rings losing tension are going to happen in the best of engines that are run hard often. That's why parts choices and machining quality become critical.
Exactly what I'm saying. THANK YOU for making it clear in a few words.
My point is if you are having bearing issues and you are below 7800 RPM you have OTHER issues and a crossover tube won't fix it. If you have the balls to go tighter than that, and try to make power doing it, you will have to correct the oil timing somehow or you will be lucky to get a full pass with the rods still in the block.
The best things you can do is make sure you have enough oil in the pan, reduce restriction on the SUCTION side of the pump, full groove mains, a high volume pump to get more oil there quicker and do anything you can to control windage.
Oil timing is important. I don't have a magnum block to look at, but my memory is the oil timing is the same as an LA engine. When I get home today, I'll go out and look at a 340 block I have out there.
Like I said, you can put the hole in the bearing anywhere in the circle. It doesn't correct oil timing.
I'm not going to name drop, but some very successful Chrysler racers have told me some of the **** they have done to fix it. They had different ways of fixing it , but all accomplished the same thing...it corrected oil timing.
The best way is to get a block with the feed hole in the correct location.