Cooling lines for an ST300?

Discussion in 'The "Juice Box"' started by Max Damage, Mar 3, 2021.

  1. Max Damage

    Max Damage I'm working on it!

    I am working on my 1968 GS California car which is a stock 350/ST300.

    I am trying to pull the original radiator to get it tested/ultrasonicly cleaned...

    The lower Trans cooling line nut doesn't want to turn on the line. This means I will either crush the line trying to hold it still, or twist the line trying to turn the nut.

    Inline tube sells reasonably priced cooling lines, but they all seem to be for the TH400 or power glide (why?)

    I wonder if any of you know off hand of either of those sets of lines cross with the ST300? I tried calling the Inline tube people, but they were not helpful ("If it isn't listed on the website, it probably doesn't cross")

    Thanks in advance for any info on this.
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    I'm going to go out on a limb here and say that the lines are probably the same. I think the cooling lines exit the transmission in the same general spot.

    You could always just cut the line and splice in a new section at the radiator with rubber hose and clamps or a compression fitting.

    Or, you can run push lok hose and fittings through the frame.
     
  3. 436'd Skylark

    436'd Skylark Sweet Fancy Moses!!!!!

    A tubing bender and a flare kit will make that line in 10 minutes.

    Or soak it for a few days with PB blaster and try again
     
  4. Max Damage

    Max Damage I'm working on it!

    Ok, Thanks for the ideas, they are appreciated. I have been trying the PBblaster soak and wait technique, along with a small pipe wrench and a flare fit. No joy yet...
     
  5. BRUCE ROE

    BRUCE ROE Well-Known Member

    Making lines is a good exercise, be sure they cannot rub on anything (and
    rub thru like mine did). Personally I would (and have) solve the problem
    by replacing the TH300 with a TH400. But lines are about the same,
    shifter shaft maybe not. good luck, Bruce Roe
     
    gs65 and Max Damage like this.

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