Head flow,vs. cam lift?......

That's g stock, stock lift more duration, but who in the hell wants to run 4:88-5:16 on the gears on the street ? because while they have a stock'ish lift ...the duration is over 300 degrees with an insanely narrow lsa.

So we open the valve more to get the valve open longer in peak flow, makes up for that lag time somewhat of the air seeking the low pressure wave.

You either hold it open longer....or open it further, the flow characteristics dictate which and or how lift it can take . If the port stalls or backs up really bad at .520 lift.....then don't bother lifting it into reversion.