Flathead cubic inch?

[flatshoebox]

If you take a 49 255ci Merc flathead motor and bore it 60 over, what would the cubic inch now be? (I know I should know this!)

[65Luck]

Formula: Pi (3.1416) times r² (radius is 1/2 the actual bore size) times stroke times 8 cylinders.

I came up with 265.

3.1875" Bore
4.000" Stroke

Bored .060 over = 3.2475 Bore
Divided by 2 is Radius = 1.62375
Radius Squared = 2.636564
Radis x Pi = 8.2830 x Stroke (4") = 33.13
33.13 x 8 Cylinders =

265


Hrmmm... that sound right?

[flatshoebox]

yeah that sounds better.. i was coming up with 275.. thanks