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Re: rod/stroke ratio
Let us not forget another benefit to increasing rod to stroke ratio. Cylinder wall side loading coming off BDC is reduced, and therefore frictional losses are reduced. We can see this example when looking at the 302 ford with a rod to stroke ratio of about 1.6, as you look at the rod angularity coming off BDC you will notice it is quite poor. If you look at the 351 Windsor with a slightly better rod to stroke ratio of 1.75 you will see much less cylinder wall side loading.
Regards,
Josh Mills
millscarbs.com
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