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#1 |
Registered User
![]() Join Date: Sep 2013
Location: Henderson, NV
Posts: 304
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Ac firewall holes
This really sounds crazy to me but.. My 72 has original holes for factory ac in the firewall but no vent holes for ac in dash? It does not look like the firewall has been changed .. Seems like it would be alot of work to change ? Any one ever see something like this?
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#2 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Ac firewall holes
Since there is not a lot of difference in the firewall holes is it possible that you are looking at the standard heater holes? Here is a picture of a firewall with the hole patterns of both systems labeled.
Another possibility is that someone changed out the dash.
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#3 |
Registered User
![]() Join Date: Sep 2013
Location: Henderson, NV
Posts: 304
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Re: Ac firewall holes
Thanks for the pics.it's got the ac holes just like in the picture.. Doesn't look like dash was changed and if it was it would have been nice if they would have put in an ac dash! There is about an inch and 1/8 space for the wire loom . Should it be that wide?
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#4 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Ac firewall holes
I am not sure what you mean by the space for the wireloom. Can you clarify?
If the dash is changed correctly you may not be able to tell since the spot welds are under the windshield seal and the sides are bolted in. Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#5 |
Registered User
![]() Join Date: Apr 2010
Location: Sutton, WV
Posts: 340
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Re: Ac firewall holes
Are you talking about the cowl to hood seal area? 1 1/8"
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#6 |
Registered User
![]() Join Date: Apr 2010
Location: Sutton, WV
Posts: 340
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Re: Ac firewall holes
Sorry. Where the wire loom is it is about 1 and 1/8 inch. Just measured mine.
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