Ok everybody...open up your Excel Spreadsheets:
Here's the correct formula for CC and CI...and to properly figure out
displacement you'll need Bore, Stroke, and Number of Cylinders.
Cubic Centimeters (CC) =
(0.7853982*(((BORE*25.4)^2)*(STROKE*25.4)*CYL))/1000
Cubic Inches = CC*0.0610237
It doesn't get any more accurate than that.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
Subject: DML: Re: RE: 239, or 238?-- 238 1/2
Actually, I got 238.5.
The 3.9 is a 6cyl. 318.
318/8= 39.75
39.75*6= 238.5
Sounds like some weird math, right? It works, anyway.
Andy Wittkamper
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