how many cubic inches
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 18
Northstar Engines and System Technical Discussion Discussion, how many cubic inches in Cadillac Engine Technical Discussion; I have read that in some places the 4.6 NS is 279 cubic inches and I read other places that ...
  1. #1
    TexasCadillac Guest

    Question how many cubic inches

    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

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
    Automobile(s): The Northstar Tuner
    Join Date
    Apr 2007
    Location
    Rock Hill SC
    Age
    46
    Posts
    2,754

    Re: how many cubic inches

    279 from the book

  4. #3
    TexasCadillac Guest

    Re: how many cubic inches

    thanks AJxtcman, have you ever seen the NS stated at 281? Your reply is appreciated. TexasCadillac

  5. #4
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
    Automobile(s): The Northstar Tuner
    Join Date
    Apr 2007
    Location
    Rock Hill SC
    Age
    46
    Posts
    2,754

    Re: how many cubic inches

    Quote Originally Posted by TexasCadillac View Post
    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
    302 / 5 = 60.4

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

  6. #5
    TexasCadillac Guest

    Re: how many cubic inches

    thanks again AJxtcman

  7. #6
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 1991 d'Elegance / 2001 DTS / 2002 DTS
    Join Date
    Apr 2005
    Location
    Upstate NY
    Posts
    6,671

    Re: how many cubic inches

    Points
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  8. #7
    Cadillacboy's Avatar
    Cadillacboy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Cadillac Fleetwood Brougham
    Join Date
    Dec 2003
    Age
    33
    Posts
    4,188

    Re: how many cubic inches

    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

  9. #8
    ewill3rd is offline Cadillac Technician
    Automobile(s): none
    Join Date
    Nov 2005
    Location
    WOODBRIDGE, VA
    Age
    46
    Posts
    11,062

    Re: how many cubic inches

    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?

  10. #9
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
    Automobile(s): The Northstar Tuner
    Join Date
    Apr 2007
    Location
    Rock Hill SC
    Age
    46
    Posts
    2,754

    Re: how many cubic inches

    Quote Originally Posted by ewill3rd View Post
    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

    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

  11. #10
    Submariner409's Avatar
    Submariner409 is online now If it won't run, slap in a big stereo
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    43,461

    Re: how many cubic inches

    + 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.

  12. #11
    ewill3rd is offline Cadillac Technician
    Automobile(s): none
    Join Date
    Nov 2005
    Location
    WOODBRIDGE, VA
    Age
    46
    Posts
    11,062

    Re: how many cubic inches

    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!


    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?

  13. #12
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 1991 d'Elegance / 2001 DTS / 2002 DTS
    Join Date
    Apr 2005
    Location
    Upstate NY
    Posts
    6,671

    Re: how many cubic inches

    What does the sticker on the radiator cover say? Whatever that is, is what we're calling it.

    Interesting topic though.
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  14. #13
    Cadillacboy's Avatar
    Cadillacboy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Cadillac Fleetwood Brougham
    Join Date
    Dec 2003
    Age
    33
    Posts
    4,188

    Re: how many cubic inches

    I think this thread will be like "what's the best oil ? " discussion lol

  15. #14
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
    Automobile(s): 2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
    Join Date
    Oct 2005
    Posts
    15,992

    Re: how many cubic inches

    no
    this will be worse
    math is involved
    hahaha

  16. #15
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
    Automobile(s): The Northstar Tuner
    Join Date
    Apr 2007
    Location
    Rock Hill SC
    Age
    46
    Posts
    2,754

    Re: how many cubic inches

    Quote Originally Posted by ewill3rd View Post
    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!
    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.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting