Numbers on the firewall?
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- Sweptline.ORG Member
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- City: Cochrane
- State: Foreign
- Location: Western Canada
Numbers on the firewall?
Was cleaning up the firewall of my 70 D100 cab today in anticipation of priming and paint.
The firewall has never been touched since new; I was cleaning an area of slight dirt and pitted my with a wire brush on my angle grinder, and when I was done I found this which was weird; clearly a #17 was painted here in the factory (the truck has been in the family since new)
Is this in fact a factory mark? If so, has anyone seen something like me this before?
I have seen companies label units like this.
Looks for opinions!
The firewall has never been touched since new; I was cleaning an area of slight dirt and pitted my with a wire brush on my angle grinder, and when I was done I found this which was weird; clearly a #17 was painted here in the factory (the truck has been in the family since new)
Is this in fact a factory mark? If so, has anyone seen something like me this before?
I have seen companies label units like this.
Looks for opinions!
Re: Numbers on the firewall?
First one like that I've ever seen.
John

John
- 64D100Poly
- Sweptline.ORG Member
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- City: Vancouver
- State: WA
Re: Numbers on the firewall?
weird for them to paint it, all I've seen is grease pen scribbles 

A grinder & paint make me the welder I ain't
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO
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- Sweptline.ORG Member
- Posts: 498
- Joined: Fri Jan 01, 2021 11:46 pm
- City: Binghamton
- State: NY
Re: Numbers on the firewall?
Maybe some guy at the factory got bored and painted it on there. 

Late 65 w 200.
Factory LU-2 winch.
Updates: 205 transfer case,4.10 gears, disc brake Dana 60 front with lock out hubs
440 repower in the works
60 d100
383 with 727
4 wheel disc
3.73 geared rear
Factory LU-2 winch.
Updates: 205 transfer case,4.10 gears, disc brake Dana 60 front with lock out hubs
440 repower in the works
60 d100
383 with 727
4 wheel disc
3.73 geared rear
Re: Numbers on the firewall?
What are the last two digits of the VIN? I know that early Porsche would scrawl/stamp/note the last two or three digits of the VIN in an inconspicuous place on the panels so that when the fitment was done, and the panels were sent to paint they’d be able to match up with the right body. Maybe they had some sort of system like that at Dodge,…using the proposed VIN, or some other particular number just to keep track of the pieces as they moved through the paint and assembly line.
- 64D100Poly
- Sweptline.ORG Member
- Posts: 128
- Joined: Mon Dec 28, 2020 12:44 pm
- City: Vancouver
- State: WA
Re: Numbers on the firewall?
I just realized mine has a #5 in the same place...
A grinder & paint make me the welder I ain't
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO
-
- Sweptline.ORG Member
- Posts: 498
- Joined: Fri Jan 01, 2021 11:46 pm
- City: Binghamton
- State: NY
Re: Numbers on the firewall?
Now this is interesting, I will have to check the power wagon.
What year trucks did you guy’s find that on? Mine is a late 65.
Late 65 w 200.
Factory LU-2 winch.
Updates: 205 transfer case,4.10 gears, disc brake Dana 60 front with lock out hubs
440 repower in the works
60 d100
383 with 727
4 wheel disc
3.73 geared rear
Factory LU-2 winch.
Updates: 205 transfer case,4.10 gears, disc brake Dana 60 front with lock out hubs
440 repower in the works
60 d100
383 with 727
4 wheel disc
3.73 geared rear
-
- Sweptline.ORG Pioneer
- Posts: 7522
- Joined: Wed Dec 31, 1969 6:00 pm
- Location: Walnut Creek, CA
Re: Numbers on the firewall?
When I removed the riveted on vin plate off a CSS truck I found in a wrecking yard, I found yellow grease pencil notes written on the back of it. That's gotta be about the most inconspicuous spot on any vehicle!
- 64D100Poly
- Sweptline.ORG Member
- Posts: 128
- Joined: Mon Dec 28, 2020 12:44 pm
- City: Vancouver
- State: WA
Re: Numbers on the firewall?
My truck is a early 65 4 headlight Sweptline D100 factory v8 3 on the treeBigBlockTrucks wrote: ↑Mon Dec 11, 2023 10:06 pm
Now this is interesting, I will have to check the power wagon.
What year trucks did you guy’s find that on? Mine is a late 65.
I realized my truck had it when i was cleaning the firewall, it looked a lot like the picture above but i could see it had been painted on with red paint originally (my truck is factory blue) so i re-traced it with red paint. It is very very likely my truck had it from the factory, as all the grease pen writing is still there from the factory.
A grinder & paint make me the welder I ain't
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO
-1965 (early) D100 Sweptline Daily
-1961 Dodge Dart Pioneer
-1968 Barracuda Formula S
OO\===/OO