The front oiling mod is very common. The new R blocks have the provision to add it right in the front china wall.
The rocker arm cross over line that I added is straight out of the big inch stroker small block.
The method I used to restrict oil to the cam is also straight out of the big inch stroker small block book. That book is identifying the same issues as Guitar Jones did in this thread. I just dealt with them a different way.
I have also adopted all the other mods that guitar Jones shows in this thread.
My previous build had a high volume pump 75 psi pressure and the block had the tube kit in the galley and the main bearing passages opened to 5/16. Rpm was just over 7000 rpm.
Number 4 main was toast after 40 runs.
I have an older 1980 mopar small block that talks extensively about trouble with number 4 main bearing, caused by high velocity in the galley. That problem is the original reason any crossover tube was ever added to a small block. You can have all the pressure and volume in the galley you want. It still has to make the 90 degree turn to get to the bearing.
A previous poster in this thread explains the velocity issue just as I understand it.
But there is more than one correct way to deal with the issues. I was just showing how I did it.
Duane
