Do you think the camshaft that turns at half the rpm of the crank and does not see nearly the loads of the crank needs the same volume of oil as the crank does.? Is the oil restricted when the oil holes in the cam journals line up.
No, that is why my main oil clearance is .003", and the passage from the lifter galley goes to the mains at 9/32" then up to the cam at 3/16" and the cam oil clearance is .001". My rockers like some oil, and the very small percentage of the time when the cam oil holes line up is minor. A small block has #2 feed one head and #4 feed another, a big block has #4 feed both heads, think about it
