I don't have a '67 but I thumbed thru the 67 AIM online on a very small screen. If I had to guess I think it is the hole for the air conditioning wiring harness? It might have originally had factory air.

 

This car definitely did not have original factory air, but I have thought about that for the a/c wiring, maybe it was a knock-out hole or something. I have looked at lots of engine compartment pics and I just cant find what I'm looking for.

 

Look online at the aim section c60

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You guys are going to have to point me in the direction of an online AIM, i'm assuming that's an assembly manual?

 

http://www.camaros.org/forum/index.php?topic=9433.0

 

I'll be the first to say I don't know JACK about a 67 but 69's have a different cutout for cars with A/C and those with just heat. The cutout in Robby's post is for standard heat no A/C. My 69 doesn't have that hole.

Jeff

 

This should be it....next to the one marked 7

 

Like I said, I don't know 67's either. I went out and looked at my 69 a/c car and I think that is where my a/c harness comes thru the firewall

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I know this 67 to be a stock 67 and it doesn't have that hole. I also believe the AC cars have a different size of hole behind the suitcase then what is in your picture.

Roger

 

A factory firewall is either AC or not: http://www.camaros.org/options.shtml#id

 

Well maybe it was a early/late model change. I know my car never had ac. From what all I have found this is where the ac harness comes through. What puzzles me is why does my car have this hole. It even has a perfect hole in the firewall padding (original). I personally removed the heater suitcase out of the car last week (installing vintage air). Its no big deal just want to satisfy my curiosity.

 

This is the firewall piercing detail from the 1969 AIM; I'll check my 1967 AIM to see if there's anything not shown on this one:

 

This is another view of the hole that Brian's picture (above) showed the A/C wiring harness passing through (photo credit to CRG). Interesting that this hole doesn't show up for RPO C60 in the firewall piercing section of the AIM.....

 

Yeah Tim the '67 AIM always has me scratching my head especially on 0 - A9 but I own a '69 so not there too often. The picture I posted is from an old thread here that has four pictures of 67 firewall piercings and then the use for all of them - that is why the picture I posted has a 7 next to the hole in question.

I've attached the four and the description from that post is:
#1 - RS headlight wiring harness
#'s1A & 6 - Fender mounting
#2 - E-brake bracket mounting
#3 - A.C. vacuum canister
#'s4 & 7 - Dash mat mounting (rubber plugs)
#5 - Ground strap to engine

 

Good pictures and description Brian, makes it pretty clear what's what. I know when I tried to identify all the holes in my car's firewall, some holes didn't line up with the AIM locations, especially the Muncie speedo cable entry, and after corresponding with a couple of other LA-built car owners from the same build date timeframe, turns out their firewalls matched mine; the conclusion being that at least sometimes, Van Nuys workers did things slightly different to the NOR guys.....

 

LOS GMAD vs. Fisher/Chevrolet assembly is always fun to compare and contrast.

I guess GMAD had to look at the bigger picture since they produced multiple division and car lines whereas Norwood until mid 1969 only made the Camaro. But adding Firebirds for Pontiac late in the '69 model run at Norwood didn't seem to screw the pooch for Camaro procedure and quality from Norwood. GMAD vehicles all share anomalies against the same lines produced in other plants. I wonder if there were major differences between Lordstown Pontiac assembled Birds and Norwoods?

Maybe someone can compile all the known Camaro differences such as stripe technique, paint finishes, accessory locations etc between GMAD LOS and the Fisher/Chevrolet lines at Norwood.

 

Here is a pic of my firewall, you can see the vintage air plate is installed over the original heater box hole and then the hole in question with a red plastic plug I glued behind it (Im going to paint it). And the PO had hacked up the holes where the heater hoses came out, fortunately the block off plate from the vintage air kit covered them up enough, I just slicked it off with a die grinder.


IMG_20131028_184121_458 by robbz28, on Flickr

 

Robby, based on that latest photo, I'd suggest the car was originally assembled with A/C, but at some time since, it was converted to a regular heater system, with the firewall being cut out to suit the heater box assembly - might also explain the creative way it was cut around the heater pipes.....

 

Just a thought - did the PO change out the controls as well, or are they for AC ??

 

The heater hole wasn't cut...the heater hose holes were just a little beat up and I couldn't straighten them out so I hacked them off myself. The large hole is original...the heater box and heater controls are original. The heater wiring under the dash is original. Just one of those mysteries I guess.

 

Strange. I just went out to the garage to check my 67 non A/C car that was also originally a 6 cylinder and it does not have that hole. So it appears that some do and some don't but why ?

 

I checked the 68 AIM for the heck of it...Some of the illustrations show that hole, but there is no mention of it. Many of those drawings are carried over from 67, I'm sure.

Out of curiosity, what's the build date Robby?

 

I checked the 68 AIM for the heck of it...Some of the illustrations show that hole, but there is no mention of it. Many of those drawings are carried over from 67, I'm sure.

Out of curiosity, what's the build date Robby?

The Tag says 10A so that puts it the 1st week of October right? It's a Norwood car 15801 Body number. Zero options other than custom interior with buckets. Another thing I forgot to mention is that there is no A/C option code on the tag and my dash does not have the vents, so it was absolutely never an AC car. I suppose someone could have cut that hole out in the firewall...maybe a dealer did it for some reason way back when, heck it may have had an aftermarket underdash a/c put in it at one time, although if that was the case there are zero clues left anywhere on the car to support that. But if you look at that first pic of that new firewall you can purchase, that is a heater only firewall and that hole is knocked out, so, I don't know...a head scratcher for sure, but I'm not overly concerned with it, this car is FAR from original and never will be as long as I own it. Not knocking a gold car, but that's what this car was, Gold with Gold Deluxe interior, inline 6 and an automatic...not my personal favorite. I can still see the gold under the dash and where the black has chipped on the upper firewall...

 

Yep, first week of October, 1966. Just a couple months into production of a new model, so they were still working some bugs out....Wasn't until the 68 model year when they got everything sorted out. ...j/k

Hopefully some other early build 67 guys will chime in here eventually....

 

The hole in your firewall appears to be in location 7 noted in post 15 for the firewall plug, not where the AC harness hole is located. Probably not a factory hole.
Could be for aftermarket AC Freon hoses. Perhaps dealer added or a Sears AC unit?

 

That is what I was thinking, perhaps and aftermarket unit because the grommet I pulled out was unlike one ive seen, it had two holes big enough to stick your fingers in each (perfect for a/c lines). Probably an under dash unit with the controls built into it. Anyway, the hole is now plugged and painted over...maybe next time I have the motor out I will have more time to slick up the firewall but for now this will do.

Thanks for everyone's input.