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Thread: 4L80E Reference Material

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    Joe (Moderator) joecar's Avatar
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    Default 4L80E Range Chart






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    Last edited by joecar; November 9th, 2013 at 08:33 AM.

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    Joe (Moderator) joecar's Avatar
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    Default 4L80E Component Train






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    Last edited by joecar; November 9th, 2013 at 08:35 AM.

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    Joe (Moderator) joecar's Avatar
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    Default 4L80E Side Section





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    Last edited by joecar; November 9th, 2013 at 08:36 AM.

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    Joe (Moderator) joecar's Avatar
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    Default 4L80E Common Hydraulic Functions







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    Last edited by joecar; November 9th, 2013 at 08:38 AM.

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    Default 4L80E TCC Apply/Release









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    Last edited by joecar; November 9th, 2013 at 08:41 AM.

  6. #6

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    Some added info I just learned since we got our built 4L80E for our F-body race car;

    Earlier 4L80E trannys have the cooler lines one of top of each other towards the front of the trans. Later years, and more desirable, have one in the front and one in the back. Apparently this significantly helps the pressure from dropping to the rear of the trans.

    Howard

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    Senior Member Tydriver's Avatar
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    Quote Originally Posted by Redline Motorsports
    Some added info I just learned since we got our built 4L80E for our F-body race car;

    Earlier 4L80E trannys have the cooler lines one of top of each other towards the front of the trans. Later years, and more desirable, have one in the front and one in the back. Apparently this significantly helps the pressure from dropping to the rear of the trans.

    Howard
    Correct, there are internal mods that can be performed on older trannys though, that will allow the planetarys to live on the older design transmissions.

    The 4L80e =

    Todd

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    Joe (Moderator) joecar's Avatar
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    Default 4L80E Manual Valve Position Fluid Pressure Switches


    Here is the corrected truth table (the 4L80E HMTG shows incorrect columns D2 and D3):








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    Last edited by joecar; February 21st, 2014 at 02:19 PM.

  9. #9
    Joe (Moderator) joecar's Avatar
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    Default 4L80E Operating Conditions






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    Last edited by joecar; November 9th, 2013 at 08:42 AM.

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