Many of the cars are being over cooled. They are running the Aviaid type 10 quart oil pans and the oil is not getting HOT enough.
Pro Stock cars use OIL HEATERS, not coolers, since the engine is set to be optimum with certain clearances. Those are set at specific oil temperatures.
That is more important for the bottom end of the engine, i.e., main bearing clearances, oil molecular loadings, etc, but it effects the valve trains also.
Unfortunately you need to determine what the optimum temperature is for your engine.
It's my opinion that 210 to 220 is about right.
If your oil is colder than that you are not warmed up and the thicker oil is putting unnecessary parasitic loads on the reciprocating assembly.
Stay under 6,500 or so and none of this should present any kind of an issue.
One thing I noticed with heavily loaded race engines is that they kill the viscosity of the oil fast.
Oil pressure on the Pro Stocks will leave the line with 100 psi and come back with 10 psi. They need to change the oil for every run.
NO ONE will ever tell you what rpm those cars are launching at. That is kind of a secret but somewhere in the 9,200 to 9,500 rpm range.
You aren't launching that hard are you?