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: What is the formula for cubic inches??

desertoy
09-18-2001, 01:19 PM
I am trying to figure out cubic inches on this motor I am building but I can't remember the formula. PLEASE HELP <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">
Old Scout
09-18-2001, 01:25 PM
http://users.erols.com/srweiss/calcci.htm
<IMG SRC="smilies/biggrin.gif" border="0">
Dan-H
09-18-2001, 01:25 PM
( 1/2 of bore) squared * pi * stroke * number of cyls.

eg

4 inch bore 5 inch stroke 8cyl

( 4" / 2 )squared * 3.1415 * 5 * 8 = 502 cubic inches

- Dan
FeCamel
09-18-2001, 01:26 PM
stroke X piston radius^2 X pi X # of cylinders
TEX
09-18-2001, 01:40 PM
So, whatcha building? <IMG SRC="smilies/smile.gif" border="0">

TEX
desertoy
09-18-2001, 02:25 PM
Originally posted by TEX:
<STRONG>So, whatcha building? <IMG SRC="smilies/smile.gif" border="0">

TEX</STRONG>
351 windsor for a class 8 off road truck <IMG SRC="smilies/biggrin.gif" border="0">
TEX
09-18-2001, 02:43 PM
Originally posted by desertoy:
<STRONG>
351 windsor for a class 8 off road truck <IMG SRC="smilies/biggrin.gif" border="0"></STRONG>

Soooooo, we talkin' long-stroke motor? 427" maybe? <IMG SRC="smilies/smokin.gif" border="0">


TEX
desertoy
09-18-2001, 05:18 PM
Originally posted by TEX:
<STRONG>Soooooo, we talkin' long-stroke motor? 427" maybe? <IMG SRC="smilies/smokin.gif" border="0">


TEX</STRONG>
Mabe next year when we freshen up the motor. For now, since it is a brand new race team and we smoked the motor the first race <IMG SRC="smilies/frown.gif" border="0"> I decided to build the motor with a stock (hardened) crank and upgraded everything else (forged rods, roller valvetrain, aluminum heads) so when we finally learn how to FINISH a race, we can up the horsepower by stroking the motor and go for the win. <IMG SRC="smilies/biggrin.gif" border="0">
spoolnaround
09-18-2001, 08:07 PM
best formula.......BIGGER IS BETTER! <IMG SRC="smilies/biggrin.gif" border="0">
fatkid
09-18-2001, 10:54 PM
forget that 351, use the 1.3 thats in your shop. That motor will get it awnnn! <IMG SRC="smilies/biggrin.gif" border="0">
Pazuzu
09-19-2001, 12:37 AM
Originally posted by fatkid:
<STRONG>forget that 351, use the 1.3 thats in your shop. That motor will get it awnnn! <IMG SRC="smilies/biggrin.gif" border="0"></STRONG>

And if he had 3 more, you could put one for each wheel! 4 wheel independent drive! Get It!