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Fuel Filler Neck

Discussion in 'Tech Discussion' started by LateOnTheBrakes, May 18, 2020.

  1. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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    Is your filler like this or is it something different? If different I can snap a pic on my trucks derelict tank and try to identify what you speak of.

    Snapchat-2063214286.jpg
     
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  2. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    The picture is pretty blurry. Are you asking what my filler neck hose looks like or the metal part? I don't think I took a photo of the hose itself. It is very large compared to the gas one though. I took a metal part of a junkyard truck. My diesel neck is 2.25" at the metal part, 1.75" at the tank.

    2020-06-28 11.36.27.jpg
    2020-06-28 11.36.31.jpg

    2020-06-28 11.36.38.jpg
     
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  3. Doppleganger

    Doppleganger Supporting Member Supporting Member

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    Is the filler hose the same for both sides? Looks like the vent hose is different.
     
  4. Bextreme04

    Bextreme04 Full Access Member

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    LMC has all of the parts. It looks like 83 and 87 had different filler necks, but the rubber hoses were the same for both years.

    https://www.lmctruck.com/1973-87-ch...s/cc-1979-87-gas-tank-filler-door-components1
     
  5. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    I actually called and talked to LMC to ask them to measure the hoses for me. They won't fit. The one for the CUCV is huge. I am guessing they use the same filling hose as semis and other large trucks.
     
  6. Bextreme04

    Bextreme04 Full Access Member

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    If it's just a diameter issue, I'd recommend finding someone with a parts truck and get two non-cucv filler necks. Any truck from 83-87 should do it for you... I can't imagine it would be more than $10-15 from a parts rig
     
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  7. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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  8. Bextreme04

    Bextreme04 Full Access Member

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    Interesting... I'd still try and get it from a parts truck. I see full sets of dual tanks for dirt cheap around here. In fact I'll be pulling both of my 20 gallon tanks, fillers, fuel lines, and selector hardware in a month or so when I convert to a EFI blazer tank for my engine swap.
     
  9. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    I'll buy a new filler neck, cap, and hose when I finally replace the gas tank with one made for EFI. I'm running an external fuel pump at the moment just to get it moving under it's own power.
     
  10. HOTFOOT

    HOTFOOT Full Access Member

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    That’s the only way I view my phone
     
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  11. Dave M

    Dave M Junior Member

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  12. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    Found better pictures of my filler hose installed and the junkyard gas filler I found. Note the size difference.

    2020-08-02 12.19.17.jpg 2020-08-02 12.19.30.jpg 2020-08-02 13.33.20.jpg
     

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