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Fuel Filler Neck

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

  1. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    Is there a specific part number for the hoses that are the filler neck and vent for the tank? Is it just a very big diameter fuel hose cut to length?
     
  2. eskimomann209

    eskimomann209 Full Access Member

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    Year?
    Bed style?
    They’re formed hoses with part numbers. Check out lmc. I’d have posted them but I don’t have any info in your truck or bed mounted on your frame
     
    Snoots likes this.
  3. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    My bad. I thought it was in my signature. 1986 K30/CUCV.
     
  4. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    LMC has it on backorder and isn't taking new orders. Who knows when things will get back to normal there. I was hoping to find a local source like Autozone/Advance/O'Reilly.
     
  5. skysurfer

    skysurfer Full Access Member

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    Your bio shows you have an '86 K10 with a 5.3, but people browsing the forum with their phones can't see that info.
     
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  6. Rickf

    Rickf Full Access Member

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    Is the vent hose the same type as PCV hose?
     
    Last edited: May 25, 2020
  7. 80BrownK10

    80BrownK10 Full Access Member

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    If you turn the phone sideways you can but no one views it like that.
     
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  8. LateOnTheBrakes

    LateOnTheBrakes 5.3-Swapped 86 CUCV

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    Ok. Hopefully I have my info in enough places now. The truck (frame/body) is an 86 CUCV. The drivetrain is out of an 86 K10 truck and who knows where the axles came from.

    It has the driver's side fuel tank. I need a part number for the two hoses (3 & 5) pictured below. I would like to pick one up this weekend and finish my fuel system. It shows as backordered on LMC and they will not take orders on backordered parts.

    section-image-5d2d70d1b53b80.63277210-1x.png
     
  9. EvilGenius

    EvilGenius Full Access Member

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    I'm interested in if you find another source for the tank vent hose as I'm also looking for one. I managed to get the filler neck for the driver's side 20 gallon tank from LMC but the vent hose was and still is on backorder. I will say that I noticed that the leftover heater hose I have seems to be the same size as the vent tube. That might end up being my stop gap solution until LMC restocks.
     
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  10. 78C10BigTen

    78C10BigTen Full Access Member

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    Yes i can
     
  11. Bextreme04

    Bextreme04 Full Access Member

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    It should just be 5/8" hose. I would highly recommend using the correct rated fuel vent hose for long term use, but just 5/8" heat hose should get you by for the short term until they come back in stock. It is easily accessible with everything installed, so I would just throw on some standard hose for now and then make sure you remember to order the right stuff when it comes back in stock.
     
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  12. h3adbang3r14

    h3adbang3r14 Junior Member

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    I actually carried my old one into my local napa and rumaged their preformed radiator hose stash that where defective fron vendor and walked out paying like 5 bucks for a piece that was very close to what i needed on my 81 k20 lb 20 gallon


     
  13. Turbo4whl

    Turbo4whl Full Access Member

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    Like @Bextreme04 stated, most heater hose and molded radiator hoses are not fuel compatible. The fuel dries out the hose and it will crack open. Ask me how I know. If you use coolant hose, plan to replace it sooner than later.
     
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