Numbers on firewall?

[Drummerboy]

I've noticed several other trucks, with orginal paint, also ha well these handwritten numbers on their firewall still. I can't remember what they ment though. Could someone enlighten me please?

[harpo231]

model num , option code , I've seen different ones ...

['68OrangeSunshine]

There was a long post on this subject last year. Some plants used more crayon marks than others. If there were any marks on my '68 Fremont-built C/10 stepside when I bought it in 1973, I probably went after them with rubbing compound and fresh Turtlewax. ''Damn graffitti, Grrr @#^&*%$, Out damn spot!''
Now, they're revered as some sort of provenance of originality. Fifty thousand dollar Barrett-Jackson trucks have unusually prominent firewall crayon scribbles -- no doubt a testiment as to the mint originality of the truck offered.
I don't want to name anybody specifically, as making fake firewall markings, but LMC will sell you the same kind of big crayons that the factory used.

[Drummerboy]

Originally Posted by '68OrangeSunshine

There was a long post on this subject last year. Some plants used more crayon marks than others. If there were any marks on my '68 Fremont-built C/10 stepside when I bought it in 1973, I probably went after them with rubbing compound and fresh Turtlewax. ''Damn graffitti, Grrr @#^&*%$, Out damn spot!''
Now, they're revered as some sort of provenance of originality. Fifty thousand dollar Barrett-Jackson trucks have unusually prominent firewall crayon scribbles -- no doubt a testiment as to the mint originality of the truck offered.
I don't want to name anybody specifically, as making fake firewall markings, but LMC will sell you the same kind of big crayons that the factory used.

It's actually a grease pen, and restorers have been using them for years. They use photos that they took before tear down to recreate what was originally on the firewall.

[FirstOwner69]

Originally Posted by '68OrangeSunshine

....If there were any marks on my '68 Fremont-built C/10 stepside when I bought it in 1973, I probably went after them with rubbing compound and fresh Turtlewax. ''Damn graffitti, Grrr @#^&*%$, Out damn spot!''....

I vividly remember removing the marks on mine when the truck was new. I should have taken a picture of the graffiti first as well as many more of the truck, but film was expensive, and who knew I'd still had the truck after 5 or 10 years.

['68OrangeSunshine]

Drummerboy -- Grease pen, crayon, whatever. The French word for pencil is crayon.
FirstOwner -- IKR. Who knew?

[Keith Seymore]

Originally Posted by Drummerboy

I've noticed several other trucks, with orginal paint, also ha well these handwritten numbers on their firewall still. I can't remember what they ment though. Could someone enlighten me please?

Here are some of the threads I have accumulated that have to deal with graffiti, assembly line marking and grease pencil markings (if you are interested):

Factory Markings: http://67-72chevytrucks.com/vboard/s...ighlight=Linda

Need Help Deciphering Factory Grease Marks: http://67-72chevytrucks.com/vboard/s...ighlight=Linda

Show Us your Crayon Marks: http://67-72chevytrucks.com/vboard/s...ighlight=Linda

Factory Grease Pencil Marks: http://67-72chevytrucks.com/vboard/s...ighlight=Linda

Z Code Fremont Asssembly http://67-72chevytrucks.com/vboard/s...light=graffiti

Found my Build Sheet: http://67-72chevytrucks.com/vboard/s...light=graffiti

Numbers at top of firewall: http://67-72chevytrucks.com/vboard/s...d.php?t=545345

[Drummerboy]

Originally Posted by '68OrangeSunshine

Drummerboy -- Grease pen, crayon, whatever. The French word for pencil is crayon.
FirstOwner -- IKR. Who knew?

Yes well thank you for that info. The grown up term is Grease Pen. At least that's what we call them at work.

[jradford]

My truck has the original firewall markings as well. Passenger side are the model number and match the spid. The drivers side are only partially readable but what is readable make no sense. LS9XX38. They didn't even make the LS9 in 1972. It is a 72 chevy C20 Camper Special. Does the LS9 stand for something than an engine designator? TIA

[hjewell2]

Originally Posted by Drummerboy

Yes well thank you for that info. The grown up term is Grease Pen. At least that's what we call them at work.

[flykelley]

I worked at the GM truck plant in Flint and Pontiac Mi for over 33 years. The numbers on the firewall are the last few numbers of your vin. It’s so the workers would know what vin number the truck is and know what options to install.