348 CID
to flog a dead horse: http://www.allpar.com/mopar/new-mopar-hemi.html
The Hemi Engine Size Controversy
Different Dodge listings mentioned 345, 348, 353, and 354 cubic inches as the engine size; possibly different people at Chrysler used different formulas to get at the cubic inches. Gaymon Wright's window sticker lists the Hemi as being 348 cid! Jack pointed out that the bore and stroke times pi times the number of cylinders = 353 - perhaps someone at Chrysler incorrectly used that formula. The 354 was probably a simple typo.
Derek wrote "the correct formula is pi x (bore/2) squared x stroke. This is because bore is a circle and area of a circle is pi x r squared! Try it and you will find 3.92/2 = 1.96; 1.962 (3.8416) x pi= 12.0687 x 3.58 stroke =43.20 x 8 cylinders = 345.6." (Mark Strode noted that if you use millimeters to avoid rounding error, you get 345.06).
The Hemi Engine Size Controversy
Different Dodge listings mentioned 345, 348, 353, and 354 cubic inches as the engine size; possibly different people at Chrysler used different formulas to get at the cubic inches. Gaymon Wright's window sticker lists the Hemi as being 348 cid! Jack pointed out that the bore and stroke times pi times the number of cylinders = 353 - perhaps someone at Chrysler incorrectly used that formula. The 354 was probably a simple typo.
Derek wrote "the correct formula is pi x (bore/2) squared x stroke. This is because bore is a circle and area of a circle is pi x r squared! Try it and you will find 3.92/2 = 1.96; 1.962 (3.8416) x pi= 12.0687 x 3.58 stroke =43.20 x 8 cylinders = 345.6." (Mark Strode noted that if you use millimeters to avoid rounding error, you get 345.06).
according to both David Vizard and the 2003 Ram Field Service Manual
the stroke is not 3.58 but actually 3.578 inches
and the bore is 3.917
that makes the engine 344.93 cubic inches
but I am sure that the factory has a certain amount of "sloppy" fits
and it could be a little more or less.
This is all kinda 'splitting hairs'
because there is another 4.9 cubic inches
in the combustion chambers of the cylinder heads
It is traditional to size an engine by the bore and stroke
but combustion space gets filled with air and fuel
at the same VE as the swept volume.
more info for any interested 5.7 Hemi 'tech head':
http://www.popularhotrodding.com/tec...engine_review/
http://ask.autoblog.com/2006/02/20/a...-7-and-6-1-v8/
http://216.120.237.3/mopar/new-mopar-hemi.html
http://www.carcraft.com/techarticles...emi/index.html
http://www.motorage.com/motorage/art...on%20Injection
http://www.sae.org/automag/techbriefs/10-2002/
http://www.autofieldguide.com/articles/100203.html
http://www.popularhotrodding.com/eng.../0602phr_hemi/
http://www.thehemi.com/news.php?id=20050824-1
the stroke is not 3.58 but actually 3.578 inches
and the bore is 3.917
that makes the engine 344.93 cubic inches
but I am sure that the factory has a certain amount of "sloppy" fits
and it could be a little more or less.
This is all kinda 'splitting hairs'
because there is another 4.9 cubic inches
in the combustion chambers of the cylinder heads
It is traditional to size an engine by the bore and stroke
but combustion space gets filled with air and fuel
at the same VE as the swept volume.
more info for any interested 5.7 Hemi 'tech head':
http://www.popularhotrodding.com/tec...engine_review/
http://ask.autoblog.com/2006/02/20/a...-7-and-6-1-v8/
http://216.120.237.3/mopar/new-mopar-hemi.html
http://www.carcraft.com/techarticles...emi/index.html
http://www.motorage.com/motorage/art...on%20Injection
http://www.sae.org/automag/techbriefs/10-2002/
http://www.autofieldguide.com/articles/100203.html
http://www.popularhotrodding.com/eng.../0602phr_hemi/
http://www.thehemi.com/news.php?id=20050824-1
My window sticker says 348...i'll stick to that and disreguard the 4 crap post above...one thing i learned in college is to never believe anything on the internet...so I will go by my good old trusted window sticker that says it's 348...thanks for you guy's help...good day




don't take what i say to heart, im just a punk...relax
