I have a new Isky cam, grind E-4, part number 301444.  The groove in the center journal is round, but it's depth ranges from .014 to .019.  The groove is not concentric to the journal. 

Some time ago, Ted said "The advantage of the cross drilled camshaft is the repeated surge of oil pressure which does help to keep the passages clearer longer".  Is it possible that Isky did this to achieve a similar result?  Just a thought.

My preference is not to pressurize the rockers but let the overflow lube the distributor gear and timing chain.  If I cut the journal groove to .035 deep, will I sacrafice overall oil pressure?  

The engine has not been assembled.

Pat in AZ