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Hole in firewall

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Old Dec 16, 2019 | 10:18 AM
  #1  
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Default Hole in firewall

Yesterday I was tightening up the throttle linkage on the 69 when
i noticed this hole ,does anyone know what this hole is for?
thanks for taking the time to look.


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Old Dec 16, 2019 | 03:15 PM
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I believe the hole is for vacuum lines/small grommet with 3 lines coming through for cars with A/C. ?


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Old Dec 16, 2019 | 11:08 PM
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Isn't it the rubber grommet that holds the carpets in place? A little hard to tell from the angle but there is a row of three I beleive there on each side, drivers and passengers, to hold the upper edge of the carpet in place.

Ike

Last edited by general ike; Dec 16, 2019 at 11:08 PM.
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Old Dec 17, 2019 | 07:06 AM
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Originally Posted by general ike
Isn't it the rubber grommet that holds the carpets in place? A little hard to tell from the angle but there is a row of three I beleive there on each side, drivers and passengers, to hold the upper edge of the carpet in place.

Ike
Ike,

I believe the OP is referring to the hole that is up and to the right of the rubber grommet. There is a pencil stuck through the hole. When I first saw the pictures, I immediately saw the grommet along the carpet edge. I did not see the pencil until I looked at the pictures a second time.

Kael
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Old Dec 17, 2019 | 07:21 AM
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IIRC On my 72 there was a plastic / insulated piece that went under the steering column with a rubber carpet plug/'retainer in that hole
M
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Old Dec 17, 2019 | 07:28 AM
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This picture if from the back of the piece so flip it over (the two half cut-outs go on the bottom and locate on the two rubber plugs that hold the carpet)

M
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Old Dec 17, 2019 | 07:30 AM
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No that’s up above,this hole is only 3/8 “
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Old Dec 17, 2019 | 07:34 AM
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That piece is missing on mine . I will look into that, thanks Mooser
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Old Dec 17, 2019 | 07:34 AM
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If that's not it then I've got no idea

M

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Old Dec 17, 2019 | 08:13 AM
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Sorry to add to the confusion. I did not notice the pencil. Hmmm can’t help. Ike
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Old Dec 18, 2019 | 12:18 PM
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50 years worth of modifications - possible a PO made his own hole to route a wire for an HEI, Electric Choke, etc. to get to the fusebox?
I found several existing holes that I could use for those purposes, but others may have been less patient, and went right to the drill.
I wouldn't have chosen a location so close to the pedals, but, hey - that's just me.

Last edited by Bergerboy; Dec 18, 2019 at 12:19 PM.
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Old Dec 18, 2019 | 05:35 PM
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I think I have figured out it is a hole for a carpet plug that will hold
one of the he three parts of the firewall pad. It’s harder to figure out what to call it.
it’s only available in the set of three.
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Old Dec 18, 2019 | 06:16 PM
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On mine (72) there was the plastic cover (image above) and then a thick pad of the insulation / underpad with the rubberized coating on one side like the rest of the stuff on the firewall
M
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