Need advice cylinder scratches

A408Cuda said

Really my concern with the scratching is the short time it ran i wouldn't think would be enough to cause that. Second it makes me think the rings will never seat properly, the dyno sheets say just shy of 500 hp not sure how that can be correct if the rings are F-ed on three cylinders. I have pulled high mileage motors and seen this, I've also pulled high mileage motors that still had a crosshatch.

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Is there any particular relationship between running time and scratches.....??

The scratches have nothing to do with ring seating. Ring seal does not get effected by tiny vertical scratches. Just for grins... here's a couple of leakage paths:

• 10 scratches that are .002" wide by .001" deep. Total area .00002 square inches
• Typical ring gap when hot: .010" by .020". Total area of .0002 square inches.

So the ring gap area is 10 time bigger than 10 scratches..... and we are not counting other factors. I think your conclusion on the power not being effected is shown by this.