Where's the Wow?

Freezerman said

It's a completely stock bottom end, didn't take it apart. So factory pistons.

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I would first check the cam lobes, easy but messy the way I stated.
But, I doubt that's the issue, somewhere, someplace, when you find it a big light bulb will come on! By the way it sounds, your not trying to tweak the last 20 horse, your trying to find a half an engine.