Originally Posted By 80fbody
My 451 is apart for a quick hone. Looking at the main feed holes its about 3/8" at the bearing saddle then quickly steps to 1/4" all the way to the cam bearings. Is that OK or should I drill them all out? Running a HV pump. Cam is a solid roller. Full groove mains.


After rereading it I thought the bearings were
small.. not the case here..as Trends said there
is 2 holes in the mains.. leave them alone... my
error
wave