[Stan Weiss]

Originally Posted by Jay S

It also made a difference what the heads flow at different valve lifts, not just the peak flow. I have seen plenty of flow bench tests that didn’t test below .2”, which make no sense to me because below .2” is where all the cylinder scavenging happens. Better low lift flows generally result in less low end power but more mid range, and pull the power peak back some.

Jay,
Time is money. So less testing at less lift points is cheaper. I know that David Vizard like to start testing @ 0.050" lift and does every 0.050" until around .400" and the goes by .100" increments

Stan