Small Block Oiling Mods - Are They Beneficial?

The #4 mod is an older mod. The "how to build a stroker" book by I've seen Szilagyi described it as to help with tappet oiling but he doesn't go into the second part of the mod and that's not what I believe or first learned it was for. He also says use 3/16 brake line and it should be 3/8". The problem is the #3 and #4 main bearings can be starved for oil at high rpm if the oil speed thru the right side galley is too fast due to larger clearances and higher oil volume. This happens even if the lifter bores are bushed or the galley tubed. Oil simply doesnt turn well. It was first devised by Larry Atherton and Mullen and Co. and will work to rpms beyond the ability of any parts available (10K). I first read about it in an older (intially written in the 70s) mopar building book as part of a trans am build up for extended high rpm operation. The important part is the angle of the fittings where they tap into the gallies. There are write ups on it in a bunch of places. Just make sure the angles are exactly the same on both ends for that step. The part Szilagyi misses aside from only saying to use tubing that is way smaller in delivery volume than the holes in the block is the blocking of the crossover for the left side lifter galley at the front of the right hand galley. That means the oil goes into the RH galley feeds #2, #3, #4, then it goes to the tube which is placed behind the oil passage to the head behind the #4 cam bearing bore, accross the valley, and hits the LH galley just in front of the LH passsage to the heads in front of the #2 cam bearing bore. Then down to the #1 main. #5 is fed on it's own. This mod reduces the oil to the tappets too but your bushings did that anyway.