Hey gang,

Why would be the cubic inch and litre size of a 403 bored .40 over? How do you do the math on that? I know a 350 .30 over is a 355 but I don't know how you do the math to get to that.

Thanks in advance for the help!
Fred

Hey gang,

Why would be the cubic inch and litre size of a 403 bored .40 over? How do you do the math on that? I know a 350 .30 over is a 355 but I don't know how you do the math to get to that.

Thanks in advance for the help!
Fred

Try this link for an online calculator
http://www.classicalpontiac.com/restoration/cr.html

Here-
http://www.bgsoflex.com/displacement.html

Or here half way down-
http://www.ondoperformance.com/calculators.html

Or if you want to figure it on a regular calculator.......
Number of cylinders X .7854 X bore X bore X stroke = cubic inches.