4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #1 Any one know formula for figuring cubic inches? My motor is a 4.1 block bored .020" to 4.020", 3.625 " crank, 6.350" rods.
Any one know formula for figuring cubic inches? My motor is a 4.1 block bored .020" to 4.020", 3.625 " crank, 6.350" rods.
T tbone87 Well-Known Member Joined Sep 12, 2012 Dec 4, 2013 #2 Go to wallaceracing.com and u can figure everything!! I downloaded the app pretty neat. Posted from the TurboBuick.Com mobile app
Go to wallaceracing.com and u can figure everything!! I downloaded the app pretty neat. Posted from the TurboBuick.Com mobile app
ttypewhite Well-Known Member Joined Oct 1, 2001 Dec 4, 2013 #4 You would be close to 268 cubic inch provided you have stock deck height.
P PSID6 Active Member Joined Sep 6, 2011 Dec 4, 2013 #5 Bore x Bore x .7854 times stroke times number of cylinders
4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #6 Yes pretty much stock height. Wallace racing says about-468 cubes- something ain't right?
4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #7 16.16 x .7854 x 6.350 x 6 = 483- what's wrong?
T tbone87 Well-Known Member Joined Sep 12, 2012 Dec 4, 2013 #8 I got 278ci or 4.5 but I not the smartest either Posted from the TurboBuick.Com mobile app
pacecarta LOGGED OUT Staff member Joined Aug 1, 2003 Dec 4, 2013 #9 6.35 is your rod not your stroke and you asked cubes the rod length has nothing to do with it nor does deck height your stoke is 3.625
6.35 is your rod not your stroke and you asked cubes the rod length has nothing to do with it nor does deck height your stoke is 3.625
U USMC_Turbo6 Well-Known Member Joined Dec 13, 2009 Dec 4, 2013 #10 276.06 ci or 4.5 Posted from the TurboBuick.Com mobile app
4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #11 Thanks- I knew I was doing something wrong. What's the correct formular?
4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #12 Got it thanks-16.16 x .7854 x 3.625 x 6 = 276 cu in
R rag231 Well-Known Member Joined Apr 30, 2005 Dec 4, 2013 #13 Your block is actually bored more than .020, it probably didnt start out with a 4.00 bore new.
4 49-blues Active Member Joined May 30, 2001 Dec 4, 2013 #14 I got it at 4.005, it is now bored out to 4.020".
R rag231 Well-Known Member Joined Apr 30, 2005 Dec 5, 2013 #15 I guess it took a lot to clean the bores up.
4 49-blues Active Member Joined May 30, 2001 Dec 5, 2013 #16 Whatever Bobbie at RPE thought is alright with me! There was actually some minor scratches that I couldn't even see until he brought it to my attention- you don't argue with perfection, he is the expert and I'm very happy with the outcome!
Whatever Bobbie at RPE thought is alright with me! There was actually some minor scratches that I couldn't even see until he brought it to my attention- you don't argue with perfection, he is the expert and I'm very happy with the outcome!
R rag231 Well-Known Member Joined Apr 30, 2005 Dec 5, 2013 #17 Of course, an RPE motor should exceed all of you expectations.