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348 CID

Old Aug 11, 2006 | 04:51 AM
  #11  
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Default RE: 348 CID

using the bore vs stroke I mentioned it comes to 345.6 CI.... and i am willing to bet 354 is a typo and was meant to be 345...
 
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Old Aug 11, 2006 | 05:00 AM
  #12  
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Default RE: 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).
 
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Old Aug 11, 2006 | 03:58 PM
  #13  
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Default RE: 348 CID

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

 
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Old Aug 11, 2006 | 05:27 PM
  #14  
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Default RE: 348 CID

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
 
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Old Aug 11, 2006 | 07:58 PM
  #15  
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Default RE: 348 CID

nice bro... feel free to be wrong.
 
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Old Aug 11, 2006 | 08:19 PM
  #16  
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Default RE: 348 CID

lmfao, take their advice they are smart people
 
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Old Aug 12, 2006 | 12:34 AM
  #17  
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Default RE: 348 CID

so is the fool at dodge that printed 348 on my window sticker...he gets paid mad cash for doing what he does don't take what i say to heart, im just a punk...relax
 
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