Hitman's Pontiac Trans Am Forum
Trans Am Information => Restoration => Topic started by: John Witzke on October 18, 2008, 08:22:30 PM
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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.
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Here are the pic's of my 78 Trans Am Y82 firewall I wish I had taken more.
(http://i170.photobucket.com/albums/u254/scottdalestunts/DSC01123.jpg)
(http://i170.photobucket.com/albums/u254/scottdalestunts/DSC01124.jpg)
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well I can second this just look at my profile picture! ;D
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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.
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your VIN is also stamped right above the heater box
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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.