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Old 08-15-2010, 09:17 PM
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About all the longer rod does is allow the piston to be lighter, as it is shorter. There is a very small advantage to the longer rod in higher rpm enviroments and with restricted head flow #'s as they will very slightly help cylinder filling, but those criteria are beyond the scope of what you are wanting to do RPM-wise. At the level you want to go, there is no real difference between the two, use whichever you want to.
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