Author Topic: 1977 Firewall Markings  (Read 1954 times)

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Offline John Witzke

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1977 Firewall Markings
« on: October 18, 2008, 08:22:30 PM »
Wonder why you never see grease pencil markings on the firewall of Norwood OH produced 1977 Firebirds?  I carefully studied our very low-mile unrestored 1977 Trans Am survivor and have found that grease markings were written on the firewall.  It is just they were applied on the red oxide primer then sprayed over by the thinly covered black paint used on the firewall.  In the proper light I can faintly see 75 which is the color code for our car and is located on the upper passenger side of the firewall.

So those of you who are correctly restoring a 1977 Firebird, yes there were paint codes written on the firewall.  They were, however covered over by a thin coating of black paint used on the firewall.

Not sure on 1978 and 1979 Norwood OH built cars but I would say the process would have been the same.  I am not sure about Van Nuys built cars at this time.       
John Witzke

Offline ScottD3

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Re: 1977 Firewall Markings
« Reply #1 on: October 18, 2008, 10:12:22 PM »
Here are the pic's of my 78 Trans Am Y82 firewall I wish I had taken more.




Offline banditbeezer

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Re: 1977 Firewall Markings
« Reply #2 on: January 25, 2013, 03:56:39 PM »
well I can second this just look at my profile picture! ;D
400 4 spd

Offline Macdave

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Re: 1977 Firewall Markings
« Reply #3 on: January 25, 2013, 07:18:13 PM »
I can see the outer cowl piece on the drivers side (normally under the fender) on two of my birds at the current time. Both have the last three digits of the six digit number i believe is called the Fissher time build number or something like that. It is the number at the bottom of the data tag. these are marked in the same manner as the above.  My wifes 78 Ohio car has things on the firewall and the top of the cowl. Hard to read as the other pieces are still attached.
Current Birds-
1971 Formula - Laurentian Green
1975 T/A 400/4spd 29U/29L
1976 T/A 400/Auto 36U/36L
1976 T/A 400/Auto 78U/78L
1978 Y88/L78/WS6
1978 T/A W72/Auto 50U/50L Hurst tops
1978 T/A 403/Auto 50U/50L Fisher tops
1981 Turbo T/A Maroon w/Fisher Top

Offline banditbeezer

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Re: 1977 Firewall Markings
« Reply #4 on: January 26, 2013, 11:34:10 AM »
your VIN is also stamped right above the heater box
400 4 spd

Offline ponchonutty

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Re: 1977 Firewall Markings
« Reply #5 on: January 26, 2013, 01:27:26 PM »
I had a '76 years back that had 19k miles on it.  You could see some of the grease markings after I had detailed the engine bay.  I wasn't sure at the time what they were but luckily, I left them on it.
Rich enough to own a TA, too poor to keep'm all ;)
1980 TA (1st car)
1989 Formula
1976 400 4sp
1976 400 auto
1978 WS6/W72 4sp
1970 455 4sp Formula clone
1980 Indy Pace TA