rod ratios and a b20


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so i'm helping my buddy do some research on rod ratios. i'm trying to figure the highest displacement i can get while still getting a good rod ratio (between 1.65:1 and 1.80:1). i'm working with an 84mm bore (so i guess i'm using a b18b or b20 block). with a b17 crank that comes out to 1804cc displacement. with b21a rods i get a 1.74:1 rod ratio. with the more available b18c rods it's still a respectable 1.69:1 rod ratio.

whatta ya guys think? anybody got anything better. the way i look at it it's 210 free cc's over a b16 while maintaining the same rod ratio!