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TI box on 70

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  • Michael F.
    Very Frequent User
    • January 1, 1993
    • 745

    TI box on 70

    where is the TI box (amp) on a 70 bolted and how many bolts secure it?? Also what, if any, differences between the amps, wiring etc. on the 67-70 boxes. Just so you know, I don't have an AIM yet. Thanks for any help/information you can provide.
    Michael


    70 Mulsanne Blue LT-1
    03 Electron Blue Z06
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: TI box on 70

    Originally posted by Michael Funk (22104)
    where is the TI box (amp) on a 70 bolted?? I don't have an AIM yet, thanks.

    Michael-------


    It's mounted on the driver side forward inner fender well, to the left of the radiator support.
    In Appreciation of John Hinckley

    Comment

    • Terry M.
      Beyond Control Poster
      • September 30, 1980
      • 15573

      #3
      Re: TI box on 70

      Originally posted by Michael Funk (22104)
      where is the TI box (amp) on a 70 bolted and how many bolts secure it?? Also what, if any, differences between the amps, wiring etc. on the 67-70 boxes. Just so you know, I don't have an AIM yet. Thanks for any help/information you can provide.
      It is mounted where Joe L says. Three bolts hold it to the inner fender. Some of the earlier (C2) boxes have a connector on the box for the wires. Later (1968 > ) have a short pigtail set of wires leading to the connector. I am not sure where in the C2 era that change took place.

      If you really want to get picky there is a date ont he original boxes, but that is not judgeable on your 1970.
      Terry

      Comment

      • Joe L.
        Beyond Control Poster
        • February 1, 1988
        • 43193

        #4
        Re: TI box on 70

        Originally posted by Terry McManmon (3966)
        It is mounted where Joe L says. Three bolts hold it to the inner fender. Some of the earlier (C2) boxes have a connector on the box for the wires. Later (1968 > ) have a short pigtail set of wires leading to the connector. I am not sure where in the C2 era that change took place.

        If you really want to get picky there is a date ont he original boxes, but that is not judgeable on your 1970.

        Terry------


        The amplifier with the "on-box" connector was used through 1968. The amplifier with the pigtail connector began for the 1969 model year and was used through 1971. Very late 1968 may have used the amplifier with the pigtail connector.
        In Appreciation of John Hinckley

        Comment

        • Donald A.
          Expired
          • January 7, 2013
          • 239

          #5
          Re: TI box on 70

          Was the TI some sort of option for some of the engines or was it stock on some? LS-5???

          Comment

          • Terry M.
            Beyond Control Poster
            • September 30, 1980
            • 15573

            #6
            Re: TI box on 70

            Originally posted by Donald Ayers (57880)
            Was the TI some sort of option for some of the engines or was it stock on some? LS-5???
            The answer is "Yes"

            For C3s it was a part of the engine option on 435Hp (L71), 1970 & 1971 (but NOT 1972) LT1, and 1971 LS6. It was optional (as K66) in all but base engines in 1968 & 1969. So your LS5 would not have it.
            Terry

            Comment

            • Michael F.
              Very Frequent User
              • January 1, 1993
              • 745

              #7
              Re: TI box on 70

              by "on box" connector, you mean the one that like a big plug boot that slips over the rubber connector on box and the other for 68 on is the one with just wires coming out, right?? thanks
              Michael


              70 Mulsanne Blue LT-1
              03 Electron Blue Z06

              Comment

              • Joe L.
                Beyond Control Poster
                • February 1, 1988
                • 43193

                #8
                Re: TI box on 70

                Originally posted by Michael Funk (22104)
                by "on box" connector, you mean the one that like a big plug boot that slips over the rubber connector on box and the other for 68 on is the one with just wires coming out, right?? thanks
                Michael------


                The "on-box" connector is, essentially, a female plug mounted right on the amplifier housing. The later style used a pigtail from the amplifier with the female plug on the end of the pigtail.
                In Appreciation of John Hinckley

                Comment

                • Michael F.
                  Very Frequent User
                  • January 1, 1993
                  • 745

                  #9
                  Re: TI box on 70

                  Joe which one do you think is better for weather protection? thanks for the great info.
                  Michael


                  70 Mulsanne Blue LT-1
                  03 Electron Blue Z06

                  Comment

                  • Joe L.
                    Beyond Control Poster
                    • February 1, 1988
                    • 43193

                    #10
                    Re: TI box on 70

                    Originally posted by Michael Funk (22104)
                    Joe which one do you think is better for weather protection? thanks for the great info.

                    Michael------


                    Probably the pigtail version. In any event, I expect that GM went to the pigtail version for some good reason.
                    In Appreciation of John Hinckley

                    Comment

                    • Peter S.
                      Very Frequent User
                      • March 28, 2012
                      • 327

                      #11
                      Re: TI box on 70

                      Originally posted by Michael Funk (22104)
                      where is the TI box (amp) on a 70 bolted and how many bolts secure it?? Also what, if any, differences between the amps, wiring etc. on the 67-70 boxes. Just so you know, I don't have an AIM yet. Thanks for any help/information you can provide.
                      Hi Michael,

                      Here is a picture of the driver's side wheel well on a '69 where you can see the three bolts popping through that hold the amplifier in place. I do believe the location, which is not exact at the factory, is the same for 1970.



                      And a snapshot of the AIM:

                      Comment

                      • Michael F.
                        Very Frequent User
                        • January 1, 1993
                        • 745

                        #12
                        Re: TI box on 70

                        thanks guys, very helpful information
                        Michael


                        70 Mulsanne Blue LT-1
                        03 Electron Blue Z06

                        Comment

                        • Alan S.
                          Extremely Frequent Poster
                          • July 31, 1989
                          • 3415

                          #13
                          Re: TI box on 70

                          Hi Peter and Michael,
                          Peter's picture made me take a look at my 71.
                          I see 2 distinct dimples (positioned it appears for the 2 lower fasteners) on the forward side of the apron. Nothing is visible from the wheel side of the apron.
                          They are however positioned on the other side of the headlight header support bracket than those shown in your picture Peter. I'd describe them as between the little 2 bolt bracket for the header and the core support.
                          So it seems the dimples carried on after 70.
                          Regards,
                          Alan
                          71 Coupe, 350/270, 4 speed
                          Mason Dixon Chapter
                          Chapter Top Flight October 2011

                          Comment

                          • Graeme B.
                            Very Frequent User
                            • October 23, 2007
                            • 213

                            #14
                            Re: TI box on 70

                            On my '69 L71 they were the same as in Peters photo. My dimples were still there untouched but I guess the assembly line workers just put them
                            where it was easier to install.

                            Comment

                            • Peter S.
                              Very Frequent User
                              • March 28, 2012
                              • 327

                              #15
                              Re: TI box on 70

                              Hi Alan,

                              That's a tough area to describe, but I think even tougher to get a picture of. I think I've captured it (albeit w/ a grainy cell phone picture).



                              The dimples are approximately 4" apart, whereas the bottom two bolts on my amplifier are 2 3/4" apart. I don't think those dimples were for the amplifier.

                              EDIT: The top bolt and bottom right bolt (in my first picture of the wheel well) are 4" apart. Perhaps it is a matter of the orientation? How were they mounted/oriented on '68s with the plug that Joe described?

                              Comment

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