To Stroke, or not to Stroke

6.760 is 440 length rod. The only thing that changes stroke is the crank. Rod length,pin postion,journal size,etc have NO affect on stroke! Mine happens to be an Eagle crank at 3.900"(BBM journal dia.) w/6.760 rods w/.990 pins. works out to 469" at 4.375 bore.
At 3.75" stroke(440 stroke) and 4.375 bore you get 451" You can use any rod that fits your purpose,383-400 rod(6.375??),BBC at 6.535,RB mopar at 6.760,some guys are using 7.100 rods. Rod size does not affect displacement. Hope that helps!
Formula is--bore x bore x stroke .7854 x # of cyl.
No mention of rod length,etc.!