Ron,
((0.7853982*15.2881)*3.31)*6 = 238.4639099574012
Rounded = 238.5 (Industry rounds to the next integer so the 238.5 = 239)
The formula that I posted is an industry standard.
- Bernd
> Here we go off the beaten path again.
>
> The 318 is a 5.2. A 5.2 (if it's truly a 5.2) when converted comes out to
> be 317.304 which doesn't even round to 318. It rounds to 317. But suppose
> it is a 318. If we convert the other way we come out with 5.212 liter
> engine. So taking 75% of a 318 (if it is a 318) would get you to 238.5, but
> converting 3.9 to cubic inches nets 237.978.
> Pick your poison. To satisfy Bernd and co, we'll start at the basics like
> he did. From the US side bore is 3.91 inches and the stroke is 3.31 inches.
> 3.91/2 = 1.955 inches, that's our radius, times itself = 3.822025 times 3.14
> = 12.001158 times 3.31 (stroke) = 39.723832. That's the number of cubic
> inches in one cyl. times 6 = 238.34299. That's rounded to 238.
>
> Ron
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