Lifters are oiled by a BIG gallery drilled from the front to the back of the block, 1/2" or larger in diameter. Rocker arm oiling has nothing to do with the oil supply to the lifters.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!