Using diff "vss" as an engine vss sensor, is it possible?

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    Using diff "vss" as an engine vss sensor, is it possible?

    Title kind of states it.

    To expand, I've got a Dana 60 from a 2000 Ford E350 van. The stock diff has a tone ring and some sort of a sensor for it.

    Can I use this to feed a LSx? If I recall right, LSx likes a 40 spline reluctor ring.

    What about a TBI engine? I forget if TBI likes 2 or 4. Is there a converter available?

    Lastly, is the ring part of the diff or is it a ring under the ring gear? I haven't pulled it apart yet so this might be real obvious.

    #2
    Trying to decide if you're serious.......

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      #3
      Originally posted by bdkw1 View Post
      Trying to decide if you're serious.......
      I've read it twice and can't figure it out either.

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        #4
        So we've got two people who don't have a clue if the tone ring/sensor on the diff can be used as an engine VSS. Cool. Do I need to provide a picture?

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          #5
          No it won’t work.

          also lsx are 24 and 58x depending on the year

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            #6
            Originally posted by Twankie View Post
            No it won’t work.

            also lsx are 24 and 58x depending on the year
            I believe you are thinking about crank sensor. I don't think the reluctor ring in a transmission is 24 or 58.

            Here is the diff sensor on top:
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            Here is ring gear tone ring:
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              #7
              If you reprogram the tooth count to work with the ecm (efi live) you are basicaly the same situation as a output vss on a tcase.
              :ogre:

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                #8
                Originally posted by total newb View Post
                If you reprogram the tooth count to work with the ecm (efi live) you are basicaly the same situation as a output vss on a tcase.
                I'm using a Land Cruiser transfercase on my project so no 'readily' available VSS at the tcase The "readily" available options are not something I care for. One required a stub speedo cable adapter to the sensor. Last time I tried that route, it was a fawking disaster.

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                  #9
                  Why was it a disaster? When I installed a Atlas II in my 1994 Explorer I needed a VSS so I just had a new speedo cable built with one built into the cable about 10" from the transfer case end where the electrical plugs were located. It works as well as the OEM VSS did.

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                    #10
                    Are you wanting the vss for cruise control or something else?

                    the pcm doesn’t require it to work if it’s not needed

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                      #11
                      Originally posted by BDK View Post
                      Why was it a disaster? When I installed a Atlas II in my 1994 Explorer I needed a VSS so I just had a new speedo cable built with one built into the cable about 10" from the transfer case end where the electrical plugs were located. It works as well as the OEM VSS did.
                      Two fold issues. I dealt with a very shitty company that jerked me around on the part so I ended up with a two piece VSS like you are describing. The stubby cable blew out twice. It was discovered the VSS was the issue and couldn't be warrantied by shitty company.

                      Since then, I have no desire to use aftermarket VSS like Jag That Run, etc.

                      I had an output housing fabbed to use stock Chevy VSS(cost cheaper than aftermarket VSS):
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                      Originally posted by Twankie View Post
                      Are you wanting the vss for cruise control or something else?

                      the pcm doesn’t require it to work if it’s not needed
                      My understanding is the TBI PCM requires a VSS for off-idle and at stop idle issues. I don't have the year TBI I'm going to be using but it is a 454 TBI.

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                        #12
                        Call Nevada Speedometer at (775) 358-7422. That's who I had do mine and its been problem free.

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                          #13
                          TBI doesn't need VSS to work. It will be happier with VSS, but it will work without.
                          As to if you can use that, with enough work/expense/headache, I'm sure you can. I know with a Megasquirt you can, not sure with EFI Live, there are a bunch of options any more if you need speed input.
                          https://www.speedwaymotors.com/Dakot...ce,395651.html
                          https://www.summitracing.com/parts/pma-pa99124
                          https://www.summitracing.com/parts/dak-sgi-100bt

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