I actually have a Canton
oil pan - I typed incorrectly. My system is the same as Patricks and he confirmed 8.5 quarts as does the ERA manual.
I have a very mild cam. My confidence is high the rockers are adjusted correctly.
My lifters are flat tappet hydraulic.
The well known engine builder put the restrictors in and the rockers are indeed OEM style. I can't confirm they are Ford manufactured or not.
This weekend I confirmed my
oil pressure gauge is accurate and installed the factory type
oil filter and disconnected the oil cooler and remote filter. That did not increase pressure or decrease the tick.
I added an additional 1 quart of oil before putting things back. No change.
The remote filter and oil cooler are now hooked back up.
Next step is to put in 8.5 quarts of heavier oil to see it that helps. I am leaning towards 10w-40. I should have time to stop for oil on Tue and test run it.
John