Re: Rod length? Piston speed?
My gut answer is C, not a hill of beans.
Your changing from a stock rod ratio of 1.49 to 1.55. You generally need to make a major change of say 0.25 or greater to see any difference, but my reasoning in only therotical and not tried on the track or dyno. Any gain on airflow will probally be offset by additional rotating weight for probally a net zero change. I think engine friction should go down with longer rod, but this pretty small compared to increase in rotating mass.
But with a rod/stroke ratio of that low, your going to sucking REAL hard on the port the first 70 degrees of crank angle during the intake stroke.
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