How Do You Calculate Cubic Inch ?

Posted By: krw71ragtop

How Do You Calculate Cubic Inch ? - 01/19/14 01:59 AM

I am having a 360 bored .030" with a 3.580" crank. What would be the cubic inch. I would like to know how to calculate the answer so I don't have to ask again. Thanks

Posted By: OldMoparMan

Re: How Do You Calculate Cubic Inch ? - 01/19/14 02:01 AM

Try this site.
http://www.4secondsflat.com/Calculator_for_CID.html

Posted By: Mr T2U

Re: How Do You Calculate Cubic Inch ? - 01/19/14 02:07 AM

bore size X bore size X stroke X # of cylinders X .7854 = ci of motor

Posted By: RapidRobert

Re: How Do You Calculate Cubic Inch ? - 01/19/14 02:07 AM

bore X bore X stroke X .7854 (1/4 of Pi) X 8 (# of cyls)

Posted By: krw71ragtop

Re: How Do You Calculate Cubic Inch ? - 01/19/14 02:43 AM

My calculation is 365 ci . Am I close ?

Posted By: Pacnorthcuda

Re: How Do You Calculate Cubic Inch ? - 01/19/14 02:52 AM

PI R squared x stroke x number of cylinders.

Posted By: RapidRobert

Re: How Do You Calculate Cubic Inch ? - 01/19/14 04:30 AM

Quote:

My calculation is 365 ci . Am I close ?

I would have sat next (or behind) you in school.

Posted By: Cab_Burge

Re: How Do You Calculate Cubic Inch ? - 01/19/14 04:35 AM

Quote:

I am having a 360 bored .030" with a 3.580" crank. What would be the cubic inch. I would like to know how to calculate the answer so I don't have to ask again. Thanks

Go to United Machine web site, KB web site and click on the claculator button and then click on the cubic inch calculator and put your numbers in and then hit calculate

Thats the way I do it, or use Wallace racing calculators web site, lots of choices out there

Posted By: krw71ragtop

Re: How Do You Calculate Cubic Inch ? - 01/19/14 03:19 PM

I got it.

I have a How to Build Big Inch Mopar small blocks book, and it has a conversion chart on cubic inch displacement, but it's blank for the 4.030" bore and 3.580" stroke column. I find it odd that it didn't list the .030" bore but lists the .040" bore (which is 367 ci) and .060" which is 371 ci with the 3.580" stroke.
I did use the conversion calculator after I tried it the old fashion way, just to verify my answer.
Thanks for the replies.