70 GS 350 Upper Raditor hose

Discussion in 'Small Block Tech' started by Jclstrike, Aug 10, 2016.

  1. Jclstrike

    Jclstrike Well-Known Member

    70 GS 350 Upper Radiator hose

    Hi All,

    Looking for the best option to use on a upper radiator hose for my 70 GS 350. I saw some old threads already but most were older. Any good options now?

    Thanks
     
  2. buick64203

    buick64203 Right wing conservative Staff Member

    Nope. I think a good used hose is your only choice at this point
     
  3. Mark Demko

    Mark Demko Well-Known Member

    Rock Auto has 'em
     
  4. gstewart

    gstewart Well-Known Member

    And I think Gates Rubber still makes them.
     
  5. red67wildcat

    red67wildcat Well-Known Member

    From what Ive looked not with the GS air cleaner only the single snorkel skylark one.
    Ive been looking for a while too
     
  6. Mark Demko

    Mark Demko Well-Known Member

    Rock Auto says W/Dual snorkel air cleaner:Do No:
     
  7. Jclstrike

    Jclstrike Well-Known Member

    Here is what I know or seen on all this:

    The Rock Auto w\ dual snorkel is a flex hose and I'm hoping not to go that route.
    Continental molded 60674 doesn't say what it fits but people here says its tight to shroud
    Gates 20980 has been used by some here but not sure on the fit though( I believe this is part number for 1969 GS 350).
     
  8. red67wildcat

    red67wildcat Well-Known Member

    All I see on their site listed w/dual snorkel are the generic flex hoses
    not the molded ones, they do have one molded one that didn't say one way or another by continental
    but I'm not sure it will work or not,I should have stated clearer what I ment
     
  9. gstewart

    gstewart Well-Known Member

    I purchased this Gates upper rad hose from Rockauto. The Gates # is 20869 and is identical to the upper rad hose on my '72 GS. Perhaps '70 vs '72 is different but I doubt it. Lower Gates rad hose # is 20597
     
  10. Jclstrike

    Jclstrike Well-Known Member

    I think 70 is different as it didn't rest tightly on the edge of the fan shroud with a strap like 72, it was out from the shroud on a hook.
     
  11. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    If I remember correctly, you can cut the 20869 hose on the radiator side to adjust the hose position. That hose fits a lot of cars.
     

    Attached Files:

  12. red67wildcat

    red67wildcat Well-Known Member

    I ordered one tonight next week when it gets here Ill post what I find out, Hopefully this is a solution
     
  13. Jclstrike

    Jclstrike Well-Known Member

    Sounds good let us know. Depending on your results I will buy the Gates 20980 and see how it fits lol.

     
  14. buick64203

    buick64203 Right wing conservative Staff Member

    Isnt the 20980 the big block hose?
     
  15. Jclstrike

    Jclstrike Well-Known Member

    possibly...from other threads it's the hose for a 1969 gs 350 w/o snorkel that works for 70 gs. I verified that it is the 1969 gs 350 hose. After that I will try the continental lol

     
  16. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

  17. Jclstrike

    Jclstrike Well-Known Member

    Based on the picture the ACDELCO 26005X or ACDELCO 26028X might be a candidate as well.
     
  18. Jclstrike

    Jclstrike Well-Known Member

    So I was out and about and found a gates 20980. Well it will work but not with the hook. It hugs tight to the shroud. Here is pictures of a original hose and the 20980 on my car. I will hang it on the wall and use if desperate unless someone needs it. LOL I will update again once I try another. P1010429.jpg P1010430.jpg P1010431.jpg P1010432.jpg P1010433.jpg

     
  19. Jclstrike

    Jclstrike Well-Known Member

    View attachment 340222 P1010441.jpg P1010439.jpg View attachment 340222 P1010436.jpg P1010435.jpg P1010434.jpg

    Just an update... the closet hose I have found is this one. I had to cut about 2-3 inches off of it as well. This hose is the ACDELCO 26028X It still runs high on the hook but at this point I think it will have to work and be close enough. I still have the original GM hose and the picture attached shows the grooves cut into it. I suspect the power steering hose was a little loose and I must of hit some high RPM's :laugh: and it dug into the hose. If anyone else finds something better let me know and I will put the dual snorkel on it this weekend and see if it clears. thanks
     

    Attached Files:

  20. red67wildcat

    red67wildcat Well-Known Member

    so I got around to putting on the gates 20869 I cut about 2 in off one end
    It will work, a little tighter to distributor cap and the snorkel does touch it but should ride ok IMG_2806.jpg IMG_2808.jpg
    First pic old hose I can tell it was NAPA but cant read all the numbers
    second pic new hose
     

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