I have a few lifters making noise until well warmed up

OldmanRick said

Has your oil pressure been consistent since the engine was built?

Although it sounds "hillbilly".....If you can get a helper to stuff a few towels in the tailpipes while you observe the header area for leaks/sounds, it could rule out the exhaust as the cause of the noise?

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Oil pressure is fine 40 lbs idle 60 -75 when over 3000 rpm . I'll check the exhaust , at night with the tailpipes blocked , should see as well as hear any leaks , have not ruled it out yet . Or it could be like the 302 mentioned above , just freak lifter. Really is bothering me , hate to have something go bad in this engine .