Originally Posted by INTMD8
Did you try more valve spring? Or lighter springs/retainers. (smaller OD, titanium)

I've yet to see a loss of valve control come down to the lifter itself. JMO



Customer isn't interested in spending more money to pick up a few hundred RPM. The engine makes 740 hp at 6000 RPM which is more then he needs on the street anyway. If he decided to go racing he can switch to a solid roller.