It seems this thread stimulated good discussions about FE
oil pressure. Two completely different schools of thought.
I changed
oil and put in 10w-40. No change.
Removing the
oil restrictors would not help my tick. Wouldn't that allow more oil flow to the top end and less to the lifters. If the tick is lifters then the noise may get worse.
The tick certainly sounds like lifters. Loose rockers or spring contact should be present all the time, not just when hot.
If the OE rockers were showing signs of blueing then I would say the restrictors need removed.
I plan to pull one of the rocker covers and inspect one more time and see if there are any signs of contacts or other issues.
Are FE valve trains noiser than other engines?
John