Grease pencil marking on firewall - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Duncan and son · 11-14-2009, 09:52 PM

Jason and I just bought our sixth 72 BB and it has very clear orignal grease pencil markings on the firewall. Long ago we figured the model no., engine trans, brakes etc but we have not been able to de-code the no. 6 that is usually in the center or the 2T or 4T that are both ends i.e. the first and last marks on the firewall. No imput on the no. 6. On the 2T & 4T some have suggested paint combinations but we have seen both on all paint combinations. Thanks Paul

Duncan and son · 11-15-2009, 10:56 AM

bump

**mr48chev** · 11-15-2009, 12:48 PM

I believe that the grease pencil marks are from the inspectors as the truck went down the assembly line. As far as I know they don't have any bearing on components on the truck.
Pretty much the same as finding the piece of paper in the pocket of your new shirt that says inspected by #14.

Mercury694 · 11-15-2009, 02:06 PM

That's not entirely true, as the model # of my truck is clearly on the firewall in grease pencil. I am not sure what else is on there, I'll have to look again.

Duncan and son · 11-15-2009, 02:38 PM

Mercury694, you are on the right track.The model# tells story ex.
CE10734 Chevy,V8,1/2 ton, 115 in wheel base, fleet side. L # shows specific engine, M # shows transmission, J70 shows power brakes etc but I can not de-code the 6 in the center or the 2T 4T on the corners.
Thanks Paul

Duncan and son · 11-16-2009, 10:58 AM

Bump because someone reading today will know the answer.

72 cheyenne pdx · 11-16-2009, 03:02 PM

I don't know, but maybe the 2T = 2wd and 4T = 4wd?

Shon · 11-16-2009, 03:19 PM

mine has 997 all over it

Firewall

radiator support

and its on the frame too

Daves72'GMC · 11-16-2009, 05:25 PM

I have 344 on the frame and under the origional carpet.What does this mean

Mudder · 11-16-2009, 06:42 PM

I could have been for just about anything. Seqence going onto a line, markings for repair, etc. Now they use bar codes and scanners.

From memory Inspectors and the guy that put the vehicles in sequence on lines are the most likely to use grease pencils. Years ago they use to have seperate lines for certain things like AC, maybe like twotone paint, etc.

Duncan and son · 11-16-2009, 11:42 PM

Hey guys thanks for your input, from doing NCRS and Bloomington Gold Corvettes yrs ago I am really into this stuff. I will continue my research and let you know what I find. Thanks again Paul

DonsCST · 11-17-2009, 02:51 AM

My 70 CST 4x4 has all the #'s your talking about with the 4T on the corners, the radiator mount reads 427X?

I also have a 72 GMC with nothing on the firewall.

My Dad custom ordered the 70 back in 70, back in the day when you could do this, instead of buying one off the lot. Could be an angle for you. Let us know what you come up with and I'll start searching my end.

Rack Man · 11-17-2009, 03:18 AM

Quote:

Originally Posted by Duncan and son

Hey guys thanks for your input, from doing NCRS and Bloomington Gold Corvettes yrs ago I am really into this stuff. I will continue my research and let you know what I find. Thanks again Paul

During your research I would appreciate it if you would let me know if you stumble across anything about these type of numbers...I have Never seen another one?.....

On the frame of my 70 4x4

Duncan and son · 11-17-2009, 10:55 AM

Donscst, if you will PM all the nos on firewall I will interpret and will research 427x
Rack man PM details and I will do the same.

LOW DOUGH · 11-17-2009, 11:04 AM

I am interested in what you find out. I know nothing

Tynee · 11-17-2009, 11:08 AM

Quote:

Originally Posted by Rack Man

During your research I would appreciate it if you would let me know if you stumble across anything about these type of numbers...I have Never seen another one?.....

On the frame of my 70 4x4

That kinda looks military. I wonder if your truck belonged to the military at one time, and that is the inventory or property #?

Duncan and son · 11-17-2009, 12:36 PM

Low Dough fell free to call me 806-252-4174 and I will tell you what I have learned about assembly line production. Paul

**yote1234** · 07-05-2010, 02:22 PM

Quote:

Originally Posted by Duncan and son

Low Dough fell free to call me 806-252-4174 and I will tell you what I have learned about assembly line production. Paul

hi paul. what did you find out re= these 2 markings? so your a blumington vette brother.. i've had a few midyears judged..

junkyardjohn · 07-05-2010, 04:17 PM

I WORKED AT FLINT TRUCK & BUS IN THE 80s. I WAS A LAYOUT INSPECTOR THERE, & THEY MADE PICKUPS, SUBURBANS & BLAZERS. IT WAS AN ASSEMBLY PLANT. THE #s (LIKE 997 PICTURED) WAS A JOB # (THEY DIDN'T HAVE ANYTHING AT ALL TO DO WITH ANY INSPECTIONS). I'D BET THAT IS WHAT THAT # IS ON THAT 72. THEY WERE MARKED AN AWFUL LOT LIKE THAT (JUST SCRIBBLED ON THERE BY HAND WITH A GREASE PENCIL). I JUST LAST WEEK BOUGHT A M1009 3/4 TON MILITARY BLAZER THAT WAS MADE IN FEB. 1984, & IT'S A 50/50 CHANCE (THEY RAN TWO SHIFTS) THAT I SAW IT GO DOWN THE LINE. FUNNY... I THOUGHT THEY WOULD BE BADASS THEN & IT TOOK ME 26 YEARS TO BE ABLE TO AFFORD ONE.

JOHN

Duncan and son · 07-07-2010, 11:53 AM

John your explanation makes sense because after looking at many trucks I can find no rhyme or reason. No apparent connection to that particular truck.
Thank you and keep diggin' Paul

11-15-2009, 10:56 AM	#2
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall bump

11-15-2009, 12:48 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Grease pencil marking on firewall I believe that the grease pencil marks are from the inspectors as the truck went down the assembly line. As far as I know they don't have any bearing on components on the truck. Pretty much the same as finding the piece of paper in the pocket of your new shirt that says inspected by #14.

11-15-2009, 02:06 PM	#4
Mercury694 Registered User Join Date: Sep 2009 Location: Savannah, GA Posts: 18	Re: Grease pencil marking on firewall That's not entirely true, as the model # of my truck is clearly on the firewall in grease pencil. I am not sure what else is on there, I'll have to look again.

11-15-2009, 02:38 PM	#5
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall Mercury694, you are on the right track.The model# tells story ex. CE10734 Chevy,V8,1/2 ton, 115 in wheel base, fleet side. L # shows specific engine, M # shows transmission, J70 shows power brakes etc but I can not de-code the 6 in the center or the 2T 4T on the corners. Thanks Paul

11-16-2009, 10:58 AM	#6
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall Bump because someone reading today will know the answer.

11-14-2009, 09:52 PM	#1
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Grease pencil marking on firewall Jason and I just bought our sixth 72 BB and it has very clear orignal grease pencil markings on the firewall. Long ago we figured the model no., engine trans, brakes etc but we have not been able to de-code the no. 6 that is usually in the center or the 2T or 4T that are both ends i.e. the first and last marks on the firewall. No imput on the no. 6. On the 2T & 4T some have suggested paint combinations but we have seen both on all paint combinations. Thanks Paul

11-16-2009, 03:02 PM	#7
72 cheyenne pdx Registered User Join Date: Nov 2006 Location: Portland Posts: 382	Re: Grease pencil marking on firewall I don't know, but maybe the 2T = 2wd and 4T = 4wd?

11-16-2009, 03:19 PM	#8
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: Grease pencil marking on firewall mine has 997 all over it Firewall radiator support and its on the frame too __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

11-16-2009, 05:25 PM	#9
Daves72'GMC Registered User Join Date: Mar 2003 Location: Asheville, N.C Posts: 952	Re: Grease pencil marking on firewall I have 344 on the frame and under the origional carpet.What does this mean

11-16-2009, 06:42 PM	#10
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Re: Grease pencil marking on firewall I could have been for just about anything. Seqence going onto a line, markings for repair, etc. Now they use bar codes and scanners. From memory Inspectors and the guy that put the vehicles in sequence on lines are the most likely to use grease pencils. Years ago they use to have seperate lines for certain things like AC, maybe like twotone paint, etc. Last edited by Mudder; 11-17-2009 at 11:53 AM.

11-16-2009, 11:42 PM	#11
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall Hey guys thanks for your input, from doing NCRS and Bloomington Gold Corvettes yrs ago I am really into this stuff. I will continue my research and let you know what I find. Thanks again Paul

11-17-2009, 02:51 AM	#12
DonsCST Registered User Join Date: Jul 2009 Location: NewMexico Posts: 59	Re: Grease pencil marking on firewall My 70 CST 4x4 has all the #'s your talking about with the 4T on the corners, the radiator mount reads 427X? I also have a 72 GMC with nothing on the firewall. My Dad custom ordered the 70 back in 70, back in the day when you could do this, instead of buying one off the lot. Could be an angle for you. Let us know what you come up with and I'll start searching my end.

11-17-2009, 10:55 AM	#14
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall Donscst, if you will PM all the nos on firewall I will interpret and will research 427x Rack man PM details and I will do the same.

11-17-2009, 11:04 AM	#15
LOW DOUGH I'M TRUCK CRAZY! Join Date: Oct 2006 Location: Sachse, TEXAS Posts: 1,737	Re: Grease pencil marking on firewall I am interested in what you find out. I know nothing

11-17-2009, 12:36 PM	#17
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall Low Dough fell free to call me 806-252-4174 and I will tell you what I have learned about assembly line production. Paul



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07-05-2010, 04:17 PM	#19
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: Grease pencil marking on firewall I WORKED AT FLINT TRUCK & BUS IN THE 80s. I WAS A LAYOUT INSPECTOR THERE, & THEY MADE PICKUPS, SUBURBANS & BLAZERS. IT WAS AN ASSEMBLY PLANT. THE #s (LIKE 997 PICTURED) WAS A JOB # (THEY DIDN'T HAVE ANYTHING AT ALL TO DO WITH ANY INSPECTIONS). I'D BET THAT IS WHAT THAT # IS ON THAT 72. THEY WERE MARKED AN AWFUL LOT LIKE THAT (JUST SCRIBBLED ON THERE BY HAND WITH A GREASE PENCIL). I JUST LAST WEEK BOUGHT A M1009 3/4 TON MILITARY BLAZER THAT WAS MADE IN FEB. 1984, & IT'S A 50/50 CHANCE (THEY RAN TWO SHIFTS) THAT I SAW IT GO DOWN THE LINE. FUNNY... I THOUGHT THEY WOULD BE BADASS THEN & IT TOOK ME 26 YEARS TO BE ABLE TO AFFORD ONE. JOHN Attached Images __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST Last edited by junkyardjohn; 07-05-2010 at 04:21 PM.

07-07-2010, 11:53 AM	#20
Duncan and son Registered User Join Date: Sep 2009 Location: Lubbock Texas Posts: 1,049	Re: Grease pencil marking on firewall John your explanation makes sense because after looking at many trucks I can find no rhyme or reason. No apparent connection to that particular truck. Thank you and keep diggin' Paul __________________ You can shear a sheep every year, but you can only skin it once The person dealing with facts is never at the mercy of the person dealing with theory 1972 Cheyenne Super 402 400 A/c bucket seat tilt custom camper Longhorn 1975 Silverado 454 Crew cab camper special dually

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