Have any of you seen or done this on a mopar? These are from high hp LS engines at a buddies shop. There is also a groove in the block going from the main oil hole going up to this second hole in the bearing.
Never done on a Mopar but yes that is standard Ls oiling method. Gm theory to feed a second supply on the major thrust side of the bearings. To me full groove does the same thing
Unless you believe that the extra bearing surface is required.