Any one interested in the oiling mods I did?
Mains 2, 3, & 4 feed two rod bearings where as mains 1 & 5 feed only one rod. Many small block guys do not drill the #1 main to 5/16 but to 9/64. Most of these mods are done with a remote oil filter and a second oil feed line drilled to the right oil galley at the front of the block. Since you can't really do that with a stock block that I know of I've drilled the #1 main feed passage as well to 5/16.