LS Oil Pump Mods M-295 oil pump Porting/Shimming Complete DIY

Sharing the areas for improvement to oil flow to reduce turbulence and discuss shimming the by-Pass spring .100” to gain 10-15# oil pressure Hot & Cold. The OEM bypass begins bypassing oil around 5300 rpms, by adding a bit more spring pressure it delays the bypass function to a higher rpm better suited for the higher rpms.