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  1. #1

    pipe stubs

    Can someboby tell my why there is to pipe stubs on the waterpump?

    One is for the heater, but whats the second for??


  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    goes to the water supply line from the external water tank. Both hoses go to the heater core.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    OK!

    Before my LS1 swap, one of the hoses from heater, go to the radiator.

    I hope I express well, so you get the point

  4. #4
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    They're both heater hoses.

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