I believe so. After a certain year, all the blocks were bored for the oil gallery, whether or not the hydraulic lifters were used. It would have made no sense at all from a manufacturing standpoint to have two different lifter bore sizes.
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!