My home inspection of Speedmaster heads

And if they were corrected how much of a difference would it make? As long as it's not causing a problem.

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I can’t answer that for you since I haven’t done that test.

But I can tell you that 589hp is doable without touching the plug holes.

What 318will has done is what I would do........ if..... I felt like I needed to do something....... which up to this point, I haven’t been compelled to do.