I have a few lifters making noise until well warmed up

OldmanRick said

Hi Jerry. In my experience, lifter noise doesn't go completely away as the engine warms, considering your oil gets thinner. Piston noise/slap, does get better as the engine warms up, but I doubt that's your problem.....

To me, it sounds like you may just have a exhaust leak.....probably at the header flange?

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N o , don't think so , a bunch of mechanics listened in , they all thought it to be lifter noise , not an exhaust leak type of noise , unless the guys at the garage are wrong as well , but I doubt it , they have been building engines for 40 plus years . ,, Don't think it's pistons , not that kind of noise , I know that from my old loose 440 , that is more of a cluck cluck than this noise .
I'll have another look at it , try to record it , really sounds like dry lifters when starting cold and gets quiet as it gets warm . I'll check all the header gaskets , just in case , does not make sense a bad lifter going quiet once warm , should be some noise , right ??

And for the others , sorry , it's a 340 hyd cam 10.5:1 forged Mahle pistons alu edelbrok air gap with a holley 750 street avenger .