: how many cubic inches



TexasCadillac
10-02-07, 06:47 PM
I have read that in some places the 4.6 NS is 279 cubic inches and I read other places that they are 281 cubic inches. Please tell me which is right. thanks TexasCadillac

AJxtcman
10-02-07, 07:27 PM
279 from the book

TexasCadillac
10-02-07, 07:47 PM
thanks AJxtcman, have you ever seen the NS stated at 281? Your reply is appreciated. TexasCadillac

AJxtcman
10-02-07, 08:04 PM
thanks AJxtcman, have you ever seen the NS stated at 281? Your reply is appreciated. TexasCadillac

Yes, buit it is backwards math.

Is a 5.0L a 305 or a 302?
do the math.
305 / 5 = 61 :bouncy:
302 / 5 = 60.4:histeric:

The # is 61
4.6L X 61 = 280.6
279 / 61 = 4.5737704918032786885245901639344:hmm: 4.6?:shhh:

TexasCadillac
10-02-07, 08:11 PM
thanks again AJxtcman

codewize
10-02-07, 08:39 PM
Points

Cadillacboy
10-03-07, 06:23 AM
I don't wanna harp on the same string in here but when doing convertions you should not straight the numbers here .
For instance : Northstar is 4565 cm3 ,if you say 4.6 you can still find the right number but not as exact as what you evalute 4565
So, according to the calculator 4,565 liter is equal to 278,511 cubic . Still right if you say 279 ;)

If you say 4,6 liter to cubic then the number is 280,646 which you can say 281

ewill3rd
10-03-07, 06:39 AM
I did some calculating years ago and I usually use 61.02, but the real conversion is: 61.0237 cu. in. = 1 liter.
That would put a 4.6 at approximately 280.70902 cu. in., personally I would round that up.
However... there could be some rounding up or down going on and 2 cubic inches isn't really that much difference.
I'd say in the end, when all is said and done... why does it matter?

AJxtcman
10-03-07, 06:55 AM
I did some calculating years ago and I usually use 61.02, but the real conversion is: 61.0237 cu. in. = 1 liter.
That would put a 4.6 at approximately 280.70902 cu. in., personally I would round that up.
However... there could be some rounding up or down going on and 2 cubic inches isn't really that much difference.
I'd say in the end, when all is said and done... why does it matter?

Your math is off more than mine:rant2:

Cylinders _ 8
Bore _____ 3.6617 MAX
Stroke ___ 3.3071

Cubic Inches Displacement
278.607

Liters Displacement
4.564

I cheated and used an online Engine Displacement Calculator:eek:

Submariner409
10-03-07, 08:21 AM
+ or - 2 cubic inches is not going to turn it into a AAFuel. 280 is close enough for ditchwork. Now, lets go back and remeasure all American V-8's so we can know which manufacturers used number specs in their advertising..........Metrics gets us decimal people into all sorts of trouble. Besides, 280 or 455 cu.in. sounds better than 4.6 or 7.5 liters.

ewill3rd
10-03-07, 08:28 AM
If you want to get picky about it, what about the volume of the combustion chambers in the cylinder heads?

AJ, I was basing my calculations on the 4.6 liter spec, I really don't care about the bore, stroke, or any of it.
All this stroking is boring me to death!
:histeric:


I'd say in the end, when all is said and done... why does it matter?
I'd say in the end, when all is said and done... why does it matter?
I'd say in the end, when all is said and done... why does it matter?
I'd say in the end, when all is said and done... why does it matter?
I'd say in the end, when all is said and done... why does it matter?

codewize
10-03-07, 08:46 AM
What does the sticker on the radiator cover say? Whatever that is, is what we're calling it.

Interesting topic though.

Cadillacboy
10-03-07, 10:02 AM
I think this thread will be like "what's the best oil ? " discussion lol

CadillacSTS42005
10-03-07, 10:06 AM
no
this will be worse
math is involved
hahaha

AJxtcman
10-03-07, 10:12 AM
If you want to get picky about it, what about the volume of the combustion chambers in the cylinder heads?

AJ, I was basing my calculations on the 4.6 liter spec, I really don't care about the bore, stroke, or any of it.
All this stroking is boring me to death!
:histeric:

It was no big deal I just throw it out. I have to use a calculator for everything. So I looked up the displacement calculator and yes I could have added cc and deck height.

ewill3rd
10-03-07, 11:03 AM
:werd:

Ranger
10-03-07, 05:11 PM
I'm with submariner. Bring back cubes! Liters are for Ricers.

Submariner409
10-03-07, 05:57 PM
Isn't "displacement" calculated on the swept volume of the cylinder, regardless of deck height or combustion chamber volume? (i.e. bore & stroke used to calculate the actual cylinder volume)