Yep! And it would be nice to have those in a measured test lab values for our 236/261 engines.
We also have the problem that one day the NOS supply of PCVs will dry up.
The alternative is a $$$$ universal PCV that has adjustable setpoints for high and low vacuum.
To be continued...

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."