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Message: <blockquote data-quote="Mr. OAM" data-source="post: 289658" data-attributes="member: 9816">Yes, that is with a .030" overbore. It's a good idea to bore a block .030" when you rebuild it for the first time, particularly if its got a lot of miles on it, just to make sure the bores are perfectly round and square to the crank.Basically all you have to do is calculate volume of a cylinder, which if you remember from high school/middle school is Pi x r^2 x length...Radius of a 4.030" cylinder is 2.015". The radius squared is 4.06 . This figure times Pi (4.06 x 3.1417) is 12.755 . This is the area of a circle, in this case cylinder diameter in square inches. Now multiply this time the stroke (12.755 x 4") and you get a volume of 51.02 cubic inches per cylinder. Multiply that by your 8 cylinders and that makes 408.16 cubic inches. And you thought you would never use that stuff!SteveSteve</blockquote>