Nowhere did I see exactly what cylinder head being used.
So as some have said, need a bunch more info.
So yeah, that alone by itself makes or could make a runner or some melted ring lands…
Smart money is start conservative ,say 30 if your using modern combustion chamber heads for instance and proceed carefully.
If using stock type iron heads , numbers will be different.
Then the rest of the stuff figures in. Compression, gearing, car weight, fuel type used etc.
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