Chalk mark options

[Roger G.]

Besides the job number, which options were chalk marked on the body/frame, and what were the locations? Was this consistently done?

PB UA6 .jpg329.jpg

[Jack C.]

Re: Chalk mark options

I have PB chalked on the right side lower firewall. My car does have power brakes.

[Terry M.]

Re: Chalk mark options

Roger I am going to assUme you have a 1969, based on your avatar, but you could have eliminated some doubt, and perhaps received more rapid responses by telling us what car generated your question. The pictures you attached more recently helped clear some of that doubt in my mind.

UA6, as you have noted, is on the driver's side toe board if you have the optional alarm system. If you had C60 the letters AC would be there. Generally body (as opposed to chassis) options show up on that toe board. People have noted the letters AC on the interior rear bulkhead of the storage compartment on C60 equipped early C3 Corvettes as well.

[Gary C.]

Re: Chalk mark options

Roger,

FYI - it helps to use the icons to identify what year car you're inquiring about.

The icons can be sorted on as a search aid.

Gary
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TDB Post Icons_031813.jpg

[Michael D.]

Re: Chalk mark options

You may find all types of assembly line shorthand on C3s. Beneath the carpet on the passenger's side of the tranny hump you are likely to find the job number. While the convertible was in production, body style was often chalked on the kick up beneath the rear storage compartment. Options were often annotated (PB, M40, UA6, N14, etc). You may also find inspector's marks and dates. Whether the markings and locations were done consistently might be open to debate.

[Steven B.]

Re: Chalk mark options

Optional suspension was noted on bottom side of front crossmember beneath radiator---i.e. FE7. If the Trailering Package was installed FE7 was also noted on the crossmember even though it had a different RPO number.

[Roger G.]

Re: Chalk mark options

Here are some that I have found photos of

[Edward J.]

Re: Chalk mark options

Roger, sometimes there is a number written on the rear exhaust panel. Job, no. ? when I cleaned my pass side inner-upper fender on my 72 there was a no. written under the black out it was the last two digits of my job no. Happy hunting.

[Randy C.]

Re: Chalk mark options

Corvette71pwrbrakes.jpg1209121921.jpgCorvette71trunkdeckmarkings2010.jpgCorvette71AC.jpg

I found markings on my '71 Corvette coupe (mid-Dec 1970 build date) on the firewall side of the floor pans under the heat shields - PB for power brakes on the driver side, 103 and A/C for job number and air conditioning, respectively, on the passenger side. Also, behind the seats and looking up, the job number (103) was written in that area. As well, under the carpet behind the seats in the storage area, were the codes UA6 (alarm system), 437 (coupe), AC for air conditioning, and M40 (THM). I also noticed the job number 103 written in a yellowish crayon on the passenger side of the transmission hump, just about equal with the shifter and partially hidden under the console. That pretty much describes my Corvette.


Randy C.

[Randy C.]

Re: Chalk mark options

Corvette71abovegastank2002.jpgCorvette71byGordieSep10.jpg

Also, etched into the fiberglass above my gas tank is "GTR 12-4-70". I suspect this is some kind of inspection "tag" before the body heads to the frame. My trim tag says E14 for a build date and the data obtained from NCRS says 12-15-70 for a build date. Never mind the glue marks in the fiberglass above the tank. The second owner of my Corvette decided he wanted better reception for his CB so he lined that entire area with aluminum foil. He was so proud of if that I didn't have the heart to tell him I took it out! He did the same thing under the carpeted area behind the seats.

Randy C.

[Terry M.]

Re: Chalk mark options

[ATTACH=CONFIG]45464[/ATTACH][ATTACH=CONFIG]45465[/ATTACH][ATTACH=CONFIG]45466[/ATTACH][ATTACH=CONFIG]45467[/ATTACH]

I found markings on my '71 Corvette coupe (mid-Dec 1970 build date) on the firewall side of the floor pans under the heat shields - PB for power brakes on the driver side, 103 and A/C for job number and air conditioning, respectively, on the passenger side. Also, behind the seats and looking up, the job number (103) was written in that area. As well, under the carpet behind the seats in the storage area, were the codes UA6 (alarm system), 437 (coupe), AC for air conditioning, and M40 (THM). I also noticed the job number 103 written in a yellowish crayon on the passenger side of the transmission hump, just about equal with the shifter and partially hidden under the console. That pretty much describes my Corvette.


Randy C.

FWIW: My 1970 has the UA6 on the driver's toe board -- on the engine compartment side along with PB. I haven't had the interior out so I don't know what is there, but UA6 would make sense there (for the installation of the door jamb switches) as well. What a remarkable thought that Corvette production changed from time to time.