[DeTomaso] What is this engine noise?

[L GRAY]

What valve covers are you using? I’ve experienced the cast aluminum “DeTomaso” valve covers, at times I’d find that the internal baffle that is below the oil filler hole in the valve cover sometimes has interference issues with some on the roller rocker arms rubbing on it as the rocker arm rotates ........
    A real quick thing to dismiss or prove. Pull the valve cover (left is easiest) to check and look for signs of rubbing on the sides of the baffle plate(s).

      Best regards,
           Leslie A. Gray

> On Aug 30, 2018, at 4:36 PM, sean mundy <seanmundy at hotmail.com> wrote:
> 
>   I can not figure out what this noise is or where its exactly coming
>   from.  I've checked the rocker arms and they are all tight.
>   I have roller rockers and lifters.  Is this the sound if one of them is
>   bad?
>   [1]https://youtu.be/o4Q06VvjuWI
> 
> References
> 
>   1. https://youtu.be/o4Q06VvjuWI
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