[HPaddict]

first of all hi to everyone what a great site. finally i can ask mr david vizard questions ive wanted to ask for years. anyway this is my question, anti pump up lifters? are they really needed or are they just a modern day snake oil. the way i see it is the stiffest lifter possible with the right valve spring to control valvetrain motion would be the ideal choice yes?. if the valvetrain is set up properly why would you need an anti pump up lifter, surely a lifter wont pump up if there is no float in the valvetrain, are they just a gimik? or a bandaid fix for wrong valve spring choice. thanks guys.