The Chevy engineers thought it was needed in 1950 when they started using hydraulic lifters in the 235 spray-oiler engines in cars equipped with Powerglide transmissions. Creating a little leakage through the lifter to purge trapped air has been done on every engine since then, no matter what the manufacturer. Yes, I have done it, but not on a stovebolt Chevy, since nobody could chase me fast enough to give me a set of hydraulic lifters for a stovebolt engine.
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!