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700r4 trans lines

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  • 700r4 trans lines

    I am running a ext filter before the cooler so I need to know which of the 2 lines is out and which is in. Top or bottom.
    Tim
    93 Ty #1670 Sold
    70 Chevelle Convertible SS-King of the Muscle Cars
    03 KFX-400. want KFX 450
    85 Scarab 30ft 02 STXR

  • #2
    Re: 700r4 trans lines

    top should be output of rad to input of tranny. Just disconnect one and crank the truck see which it shoots out of.
    I am Renz.
    1992 Typhoon #2320 . 2007 Chevy Avalanche

    Comment


    • #3
      Re: 700r4 trans lines

      Safest way is the way Mike said to do it. Disconnect a line and see which is which.
      Top fitting on the trans is the return line if you can keep track of the lines.
      From the Hotrodders board:
      Transmission fluid cooler lines: on the 700R4 the bottom fitting on the right side of the transmission is the "out" line to the cooler and the top fitting is for the return line from the cooler. These fittings are 1/4-inch pipe thread

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      • #4
        Re: 700r4 trans lines

        The bottom line at the radiator is the out from trans, the top is the into trans.
        Another way to tell is, right after start up , feel the lines with your hand. The hot one would be the out and cold-er one is the into the trans.

        Denny
        Last edited by denny; 06-07-2007, 10:08 AM.
        Ty369 (original owner) Best 11.46@117.39 PTE51 http://www.youtube.com/watch?v=s-TOBZECLeU
        Denny NY
        Bowtie block, steel crank, vortec heads, 4l80e, Precision billet 6768, Cambell custom cam, HTP 50 lber

        Sy303 (Frankensy) - 23 deg oddfire BS3 efi E85 - th400 - walbro 450LPH, 160lb, unknown CR

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        • #5
          Re: 700r4 trans lines



          So is this diagram wrong? This is what I followed...
          SY 0364 AFPR, Walbro, gilbert,relocated battery to box, removed ABS, Lowering springs, Rear sway bar, E-fan with Delta Current Controller, JSM 3" Stainless DP and RPM 3" stainless full exhaust. Jwaller Turbo. 60lb inj, TurboTweak Chip.
          Best time 2008
          13.1321@102.03mph 1.7722 60'
          Best time 2016
          ???

          Comment


          • #6
            Re: 700r4 trans lines

            Thanks to ALL!!!! Great info is to be had on this board. Off to join the power tour today!!
            Tim
            93 Ty #1670 Sold
            70 Chevelle Convertible SS-King of the Muscle Cars
            03 KFX-400. want KFX 450
            85 Scarab 30ft 02 STXR

            Comment


            • #7
              Re: 700r4 trans lines

              That chart isn't indicative of fluid flow. It just gives a clean way to hook everything up and it's not "wrong". IF you install an inline filter setup though, you need to know "in" and "out" of the trans because if you hook the filter up backwards it will cut off flow.
              Originally posted by Syclone Rob


              So is this diagram wrong? This is what I followed...

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              • #8
                Re: 700r4 trans lines

                Originally posted by George Blake
                IF you install an inline filter setup though, you need to know "in" and "out" of the trans because if you hook the filter up backwards it will cut off flow.
                yes, how true this is. ain't that right _______?

                [the person's name has been hidden to protect the guilty]
                I am Renz.
                1992 Typhoon #2320 . 2007 Chevy Avalanche

                Comment


                • #9
                  Re: 700r4 trans lines

                  Just to clarify put the temp sensor on the hot (out) side.
                  Tom
                  93 Typhoon #642 sold
                  Syclone #919

                  Comment


                  • #10
                    Re: 700r4 trans lines

                    Originally posted by Tommyquest
                    Just to clarify put the temp sensor on the hot (out) side.
                    Stupid me just followed that diagram exactly (other then I am not using the stock rad cooler) Today I tested the system and sure enough I had the system hooked up backwards. Though I had tons of fluid flow thru the filter backwards when I tested it?!?!?! Should I replace the filter just in case or do think its still good? I see no contaminats in the oil.
                    It was a simple easy fix since I used all those fittings. Good thing nothing seems wrong and the tranny is currently working great (knock on wood!!)


                    So for clarity for anyone reading this thru the search..

                    THIS INFO is for the 700R4
                    Top Port is the return feed to the tranny from the cooler. (cold)
                    Bottom port is the Feed out from the tranny (Hot)
                    SY 0364 AFPR, Walbro, gilbert,relocated battery to box, removed ABS, Lowering springs, Rear sway bar, E-fan with Delta Current Controller, JSM 3" Stainless DP and RPM 3" stainless full exhaust. Jwaller Turbo. 60lb inj, TurboTweak Chip.
                    Best time 2008
                    13.1321@102.03mph 1.7722 60'
                    Best time 2016
                    ???

                    Comment


                    • #11
                      Re: 700r4 trans lines

                      The external system uses a conventional oil filter. Your transmission's pressure varies. At idle, you'll have tons of fluid making it through the filter. Pressure builds at high throttle and road speeds, this going through the filter backwards will make the spring loaded "bypass" door in the filter slam shut leaving you with minimal fluid flow.

                      Comment


                      • #12
                        Re: 700r4 trans lines

                        Originally posted by Syclone Rob
                        Stupid me just followed that diagram exactly (other then I am not using the stock rad cooler) Today I tested the system and sure enough I had the system hooked up backwards. Though I had tons of fluid flow thru the filter backwards when I tested it?!?!?! Should I replace the filter just in case or do think its still good? I see no contaminats in the oil.
                        It was a simple easy fix since I used all those fittings. Good thing nothing seems wrong and the tranny is currently working great (knock on wood!!)


                        So for clarity for anyone reading this thru the search..

                        THIS INFO is for the 700R4
                        Top Port is the return feed to the tranny from the cooler. (cold)
                        Bottom port is the Feed out from the tranny (Hot)
                        Reading this then I should route the hose from the bottom port to the in on the filter then to the cooler and back to the top port. I "thought" that is how I have it but after about 30 seconds of running the trans will whine BAD if put in gear, it quits if put in park. I have not driven it at all since it is a new trans and I need to get it right.
                        Tim
                        93 Ty #1670 Sold
                        70 Chevelle Convertible SS-King of the Muscle Cars
                        03 KFX-400. want KFX 450
                        85 Scarab 30ft 02 STXR

                        Comment

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