RustyRatRod said

Sounds like it's runnin outta camshaft and or valve springs. It probably is. But before you make changes, run the compression test and tell us what you come up with. We can then come up with some parts to optimize your combo if that's what you want to do. As usual, we won't all agree on what camshaft, BUT you will see a good enough pattern with our recommendations that you will be able to make a decision.

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