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700R4 cooling lines??????

Discussion in 'The Garage' started by skratch, Dec 27, 2003.

  1. skratch

    skratch 1/2 ton status

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    OK, so I'm an idiot.
    I pulled the lines off my tranny and radiator without fisrt figuring out which one went where!

    I'm about to go out and re plumb the system and need to know which line goes where.

    Does it go; top trans line to top cooler hole, and bottom to bottom or top tranny to bottom cooler?! auuuugh.

    Thanks,
    Mike /forums/images/graemlins/1zhelp.gif
     
  2. R72K5

    R72K5 Banned

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    will engine run ? if so then fire it up real quick and see what line the fluid runs out of and with the lines disconnected at front, then put the output line to bottom hole on radiator and other line to top hole, i am told that you want fluid to go up through radiator cooler to prevent air, and that 700r4 is not same as th350 and such, lines are reversed, *supposedly*
     
  3. 88Silverado

    88Silverado 1/2 ton status

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    On a 700 the top is the return, therefore you want the top line from the radiator to connect to the top line on the trans. The flow is the same as a th350. The 200R is reversed. /forums/images/graemlins/thumb.gif
     
  4. skratch

    skratch 1/2 ton status

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    Dude Thank You

    That's exactlly what I needed to know, now I can finish my lines! /forums/images/graemlins/thumb.gif
     
  5. 87blues

    87blues Registered Member

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    I have a leak in my cooler lines because they are joined tubes. Looking to buy some single lines shaped for my 87 Jimmy 700r4 transmission. Anybody know a good source for one piece lines?
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    You might be able to get them from someplace like LMC or inlinetube. I believe inline is the one that sells one for specific vehicles. Last I checked a few years back, there weren't any for the K5's, but that could have easily changed.
     
  7. 87blues

    87blues Registered Member

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    I have tried LMC, they do not carry lines for the 700R4 I was told. I will search this inlinetube website. Thank you.
     
  8. rusty79beast

    rusty79beast Registered Member

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    I bought mine from www.classictube.com & they make them for your application I do believe. Hope this helps! I think OE steel is $45 & Stainless is $90 or so.
     
  9. 87blues

    87blues Registered Member

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    Thank you, I will try them for sure. Really tired of losing transmission fluid.
     
  10. mudslinger99

    mudslinger99 1/2 ton status

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    You can take off you old tranny lines and go to NAPA and they will bend them to match and put new fittings on for about $20 bucks... Or atleast they do around here :D
     
  11. 87blues

    87blues Registered Member

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    I found some at Classic Tube. Thank you all for the ideas.
     

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