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  •  » Differential - 8" Center Chunk

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    5/06/2014 5:46 AM  #1

    John Ha
    I FYI 24-7

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 742

    Differential - 8" Center Chunk

    I remember seeing posts a while back about/from a board member that sold the center chunks for the early ford differentials.  I can't find the source with searches - does anyone remember who that is? 

    Thanks!

    Founding Member of the Perpetually Bewildered Society
     

    5/06/2014 5:51 AM  #2

    MarkinSC
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    Registered: 4/01/2013
    Posts: 444

    Re: Differential - 8" Center Chunk

    John Ha wrote:

    I remember seeing posts a while back about/from a board member that sold the center chunks for the early ford differentials.  I can't find the source with searches - does anyone remember who that is? 

    Thanks!

     
    I think his name is Phil aka nine inch nodular.     I hope he doesn't mind me putting his email address out there.  Maybe I will PM it to you.

    GET HER DONE BULLETBOB!!! ..
     

    5/06/2014 6:37 AM  #3

    John Ha
    I FYI 24-7

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 742

    Re: Differential - 8" Center Chunk

    Got it - Thanks Mark!

    Founding Member of the Perpetually Bewildered Society
       •Thread Starter
     

    5/06/2014 11:14 AM  #4

    Technomancer
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    From: Sedgwick, Kansas
    Registered: 4/01/2013
    Posts: 134

    Re: Differential - 8" Center Chunk

    When it comes time to put in an automatic 4 speed overdrive transmission for my car, I'm going to need to change my rear axle ratio from 2:80 to something more like 3:50

    If I've got a 300-or-so horsepower 5.0 in front of it, do you think it's reasonable to just replace the internals on my 8"?   Or is it almost mandatory to go to a beefier unit like a 9" or 8.8"?

    I'm not going to be flogging her every day at drag races, but I don't want to have to worry every time I step on the gas either.  

    "Whatever you are, be a good one." - Abraham Lincoln
     

    5/06/2014 12:41 PM  #5

    Tubo
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    From: Ft. Walton Beach, Florida
    Registered: 4/01/2013
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    Re: Differential - 8" Center Chunk

    Technomancer wrote:

    When it comes time to put in an automatic 4 speed overdrive transmission for my car, I'm going to need to change my rear axle ratio from 2:80 to something more like 3:50

    If I've got a 300-or-so horsepower 5.0 in front of it, do you think it's reasonable to just replace the internals on my 8"?   Or is it almost mandatory to go to a beefier unit like a 9" or 8.8"?

    I'm not going to be flogging her every day at drag races, but I don't want to have to worry every time I step on the gas either.  

    Just replace the chunk with track-loc & gears. 3.25-3.50. The 8 isnt a real weak sister and will do just fine for an automatic and even 375HP

    Tubo
     

    If it ain't broke, I haven't modified it Yet
     

    5/06/2014 1:40 PM  #6

    Technomancer
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    From: Sedgwick, Kansas
    Registered: 4/01/2013
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    Re: Differential - 8" Center Chunk

    Thanks, Tubo!

    "Whatever you are, be a good one." - Abraham Lincoln
     

    5/06/2014 1:56 PM  #7

    TimC
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    From: Wheaton, Illinois
    Registered: 4/01/2013
    Posts: 863

    Re: Differential - 8" Center Chunk

    Tubo wrote:

    Just replace the chunk with track-loc & gears. 3.25-3.50. The 8 isnt a real weak sister and will do just fine for an automatic and even 375HP

     

    I have two 8" center sections, the original one that came in my 65 housing, and one from a mid 70's Mustang II.  There is significantly more cast iron webbing on the MII center section above the pinion yoke, than on the 65 part.  I bought the MII unit as it had 3:55's in it, and noticed the better casting, after the UPS driver rang my doorbell.
     

     

    5/06/2014 10:11 PM  #8

    Tubo
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    From: Ft. Walton Beach, Florida
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    Re: Differential - 8" Center Chunk

    Yup, TimC the post 67 8" housings had extra webbing added, and would be the better choice for a Hi-Po build. My point was more that most all 8" chunks will stand up to 375HP especially when it's coming from an automatic trans vs a high rev clutch dump.

    Tubo

    If it ain't broke, I haven't modified it Yet
     

     

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