TI box on 70

[Michael F.]

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.

[Joe L.]

Re: TI box on 70

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.

[Terry M.]

Re: 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.

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.

[Joe L.]

Re: TI box on 70

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.

[Donald A.]

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???

[Terry M.]

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???

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.

[Michael F.]

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

[Joe L.]

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------


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.

[Michael F.]

Re: TI box on 70

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

[Joe L.]

Re: TI box on 70

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.

[Peter S.]

Re: 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.

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:

[Michael F.]

Re: TI box on 70

thanks guys, very helpful information

[Alan S.]

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

[Graeme B.]

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.

[Peter S.]

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?