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    Author Topic: New CID  (Read 743 times)

    Offline usraptr

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    • Posts: 1814
    New CID
    « on: February 25, 2009 - 11:21:00 AM »
    Just pulled the heads off my 440 U and discovered that it is bored .30 over.  I'm just curious, does anybody know what the new CID is with the .30 over so I don't have to dig out the formulas and calculate.
     :feedback:
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    1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

    Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
    (Edited 8-1-17)

    "usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.


    Offline MEK-Dangerfield

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    • Posts: 20946
    • I don't get NO respect! Member since 1/25/2002
    Re: New CID
    « Reply #1 on: February 25, 2009 - 11:23:36 AM »
    I'll say 446, but I think the real number is somthing like 445.8
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    Mike

    1970 Challenger - SOLD
    2016 SXT+.  1 of 524 SXT+'s in Plumb-crazy for 2016.

    Offline usraptr

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    • Posts: 1814
    Re: New CID
    « Reply #2 on: February 25, 2009 - 11:38:07 AM »
    Thanks.  I'm a little surprised.  I thought you'd pick up more the 6 CID from a .30 overbore, but I'm just a novice at this engine stuff.
    Logged
    1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

    Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
    (Edited 8-1-17)

    "usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.

    Offline moper

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    • Posts: 2368
    Re: New CID
    « Reply #3 on: February 25, 2009 - 11:50:22 AM »
    Nope. Boring is not a performance deal. It's a simple fact that you need to freshen the surface for the rings, so you will need a bigger piston. No speed secret.
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    Offline NoMope Greg

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    Re: New CID
    « Reply #4 on: February 25, 2009 - 01:27:08 PM »
    When you do the math, the increase in bore isn't the big contributor to increased volume, it's the increase in stroke.  That's why you always hear of big engines referred to as "strokers."
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    Greg
    2003 Ford Escape XLS
    Currently Mopar-less :(

    Offline usraptr

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    • Posts: 1814
    Re: New CID
    « Reply #5 on: February 25, 2009 - 02:30:25 PM »
    Thanks for the insight guys.  I appreciate it.
    Logged
    1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

    Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
    (Edited 8-1-17)

    "usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.
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