Corvette Owner Research Center
Welcome to the Corvette Action Center’s Corvette Owner Research Center. The purpose of this section is to provide Corvette owners with the resources necessary to properly document past owner and history on their Corvettes.
Using the tabs here, you can access useful information such as area code listings through out the United States, build sheet / record information, general links and information on conducting vehicle history searches as well as post and search through Information Wanted and Information Available listings.
To view the listing in the system, or to search for a particular Corvette listed in the system, click on the DIRECTORY tab at the far right. There you can use the various category / subcategory dropdowns, run a search using keywords, or click on any of the tags you see in the listings.
Information Available Ads:
If you are the past owner of a Corvette and you have additional documentation or information that may be of value to the current owner of your Corvette, who you have been unable to locate, you are welcome to post an Information Available advertisement here.
Information Wanted Ads:
If you are searching for past owners and/or documentation for your Corvette, you are welcome to post an Information Wanted advertisement.
You can provide as much or as little information as you wish in your listing. You will also be able to go back and edit your listing at any time. If you provide an email address, you should know that your email address is kept from viewing and primary contact via email utilizes a special form.
All listings are held and reviewed upon submission prior to their release for public viewing.
Area Code Listing
Below is a listing of all the area codes for each state in the United States. To locate the cities that are included in each area code, simply click on the name of the state. The list is provided in alphabetical order for your quick reference.
– States are listed in alphabetical order, followed by the area codes listed in numerical order.
– Click on the state name to the area codes and cities in each area code for that state.
– Click on the area code to view the cities included in that area code.
Corvette Build Records
Written and used here, with permission by Arthur Armstrong
This article appeared in the National Corvette Restorer Society’s “The Corvette Restorer” magazine, Volume twenty-seven, number three, Winter 2001 issue. It’s an excellent article with insight into the existence of, or lack there of, Corvette build records written by a retired GM employee.
About four years ago, Jim Perkins, then General Manager of Chevrolet Motor Division, put me and another employee on a Special Assignment to search anywhere and everywhere within GM for the Corvette and Camaro build records that have been so sought after. We spent two months searching the bowels of GM including dusty old warehouses, assembly plants, GMAC, financial departments, accounting departments and many other departments within GM that we thought might have a remote chance of having such documents. We also searched outside GM storage facilities such as Leonard Brothers Archives in Detroit and the Boyers storage facility in Pennsylvania that contained GM data. This was an all encompassing, no holds barred, search that Mr. Perkins authorized. We used his name and position to gain access to various departments. The departments then queried their employees and searched their files and reported to us. Since the request was from the boss, they responded thoroughly and promptly. We then followed up on any promising leads.
The results of our search will not please the Corvette world (and didn’t please us either) as we were NOT able to locate the Mother Lode!!! We did find a few production records (about 2 1/2 years worth), not build sheets, back to mid-year 1976. GM already had (has) them back to about 1978.
Although the Corvette was and still is, a low production vehicle, the Engineering Records (of which the build records are just one) were NOT kept separately from other Chevrolet vehicles lines, i.e. Camaro, Corvair, trucks, etc. Chevrolet produced more vehicles than all the other GM divisions combined, and therefore generated a much higher volume of records which were a storage problem.
After final year production, the build records have very little business value to Chevrolet and therefore were not considered to be high priority for retention. GM record retention policy required the assembly plants to retain said documents for only about six months. Some records (including build sheets) were retained longer at the Corvette assembly plants, St. Louis and Flint. However, when Corvette production ceased at these locations, the records were pitched. It should be noted that the current Corvette Assembly Plant in Bowling Green, KY, retained the 1981 – present vehicle manifests that are available now through the NCM. This was against all odds, as there were many movements over the years within GM to destroy them because they had no business value to GM.
Meanwhile, back at the Tech Center in Warren, Michigan, the Chevrolet Engineering Records Retention Policy called for periodic destrcution of non-essential records, of which the build documents were one, and this was carried out on a routine basis. The other GM divisions, Cadillac, Pontiac, etc., had much smaller production volumens and interpreted the GM Records Retention Policy differently and therefore retained said documents.
GM Legal Staff did not and does not dictate the retention period of documents. GM has a procedure manual which outlines retention periods for various documents. GM Legal Staff does require retention of specific documents that are involved in litigation, but that concludes as the litigation ends.
NCRS Member #14981
NCM Founding Member #1268
Owner and restorer (frame-off restoration) of a 1965 L76 Roadster
P.S. I don’t have my Corvette’s build records either!!!
Build Sheets & the Late Model C3 Corvette
Written and used here, with permission by Tom Russo
Published in The Corvette Restorer Volume 32:3 Winter 2006
Tank stickers first appeared on the 1967 Corvette model and have become a serious search and find rescue mission among 1967-82 Corvette owners. Owners learned later that tank stickers are actually the Corvette Order Copy. It wasn’t until 1973 when the St Louis Corvette assembly plant glued the manifest or build sheet to the tank in place of the Corvette order copy. In recent years as late C3s exchange ownership, original documents are discovered that yield insights into Corvette production and assembly.
What’s a Build Sheet?
This article references four terms used to describe the type of production documents commonly discovered today and includes tank sticker, build sheet, broadcast copy and manifest. Hobbyists probably adopted the terms tank sticker and build sheet because they literally describe the document type. The tank sticker got its name because it is found on the tank. Initially it was the Corvette Order Copy and later (post-1973) it became the manifest. While it’s not known when GM introduced the term manifest in automotive assembly, the term is used interchangeable with broadcast sheet. Build sheets probably came into being to describe tank stickers not found on the gas tank and other production documents discovered as restorers began to take Corvettes apart for repair, restoration and maintenance.
For the purpose of this article tank sticker refers to a Corvette Order Copy or manifest glued to the gas tank, a practice known to have occurred from 1967-82. Broadcast Copy refers to production documents (either the Body Broadcast Copy or Chassis Broadcast Copy) found on or associated with Corvettes assembled prior to 1973. Not many of these are around. A manifest is a one-page multi-part document with printed broadcast codes for body and chassis used in both St Louis and in Bowling Green. Build sheet is used generically to reference any copy of the manifest found on a Corvette whether its glued to the tank or discovered under the carpet. It’s also used to reference early production documents, the Broadcast Copy for either body or chassis. These are all assembly plant documents in contrast to the Corvette Order Copy, which is a sales document. Ironically, the National Corvette Museum markets a service providing “build sheets” for Bowling Green-built Corvettes, but plant engineers use the term manifest.
Late Model Build Sheets
The extensive study of mid-year production documents, the exception control letter system, trim tags and vehicle identification number tags (VIN) used to document the 1963-67 model years carries forward to the early years of C3 production 1968-72. However beginning in 1973, we see evidence of subtle but significant changes that took place in processing engineering and automotive production at the St Louis Corvette assembly plant, which persisted through the balance of C3 production. For example if we consider solely production documents, sometime during or after 1973 we find the following changes depart from previous Corvette production.
- Use of Protect-O-Plate warranty plate ended
- Single one-sheet landscape format manifest introduced
- Use of ECLs ended with transition to broadcast codes
Where Are Build Sheets Found?
Today, owners still discover build sheets stuffed away from the late 70’s. And it’s amazing the places where these build sheets are discovered. For example in 2004 at the Charlotte Regional, an owner with both a 78 Pace Car and Silver anniversary (low-mileage), was looking underneath his vehicle and discovered a build sheet folded and tucked on the topside of the strut support bracket (Figure 3). Owners have learned that other places to search for these rare production documents include under carpeting, tucked up between speedometer and tach, and even inside seats! The quality of these finds is superb! Of course the traditional location remains the gas tank but visitors to Corvette online forums often ask where else they could find the DNA of their classic Corvettes.
Understanding Corvette DNA
Build sheets are unique Corvette production documents because they contain broadcast codes for those regular production options (RPO) the original buyer specified when the Corvette was ordered. Today as we study well-preserved late model C3s, in particular 1978 Pace Cars, we see labels with their broadcast codes (and part numbers) that match-up precisely with the codes broadcast on the vehicle’s build sheet. These codes equally include ink stamps as well as those codes stamped with a die set.
Boxes organize production data on the manifest. Not all boxes are used but some were reassigned between 1973 and 1982, but most conveyed the same information throughout this period. For example, Box 39 is reserved for carburetors, described as CARB on the manifest and reveals a broadcast code such as BJM, which was called out for an L82 M38 equipped ’78 Corvette. Or, consider Box 31 reserved for the alternator. It’s description reads ALTER & PULLEY. In Figure 1, we see broadcast code WP, which called out the 63-amp alternator with ink stamp WP for air-condition-equipped models. Likewise, Box #91 EMISSION calls out a printed emission label with code DW for a smog pump-equipped L82. The manifest also lists the engine suffix, transmission, and axle codes that reconciles with part codes if they’ve remained the same since assembly.
In addition to the broadcast codes, the build sheet lists the RPOs ordered by the customer such as RPO C60 (A/C), RPO L82, RPO B2Z (25th Anniversary Paint), etc. The manifest instructs factory workers how to build a base Corvette. When options were ordered, the RPO calls out the part for a particular option by replacing the broadcast code for a base part with the broadcast code of an optioned part.
For example consider radiators for the 1978 model year and four different applications, using only two part numbers used in 1978. On the passenger side along the tank a metal tag reveals the two-letter broadcast code for the radiator installed which matches the cooling requirements for that particular vehicle. Base L48s, regardless of transmission or A/C, were equipped with the base radiator GM# 3035558 called out with the MK code. However, if you ordered RPO ZN1 Trailer Package, the L48 was equipped with GM# 3035856 RPO V01 a heavy-duty radiator with a broadcast code of ML. The same radiator was called out when L82 was ordered with either A/C or ZN1. But order an L82 without either of these two options, and it was equipped with the base radiator. Figure 1 and 4 (Box 45) call out the ML code for the heavy-duty radiator…standard cooling for the L82 with C60 and either M38 or M21. The coolant lines remained plugged for the dual-purpose radiator when four-speed was specified (See Figure 1, Box 54). In contrast, Figure 4 Box 54 calls out the coolant lines to be used when M38 (3 speed auto) is ordered. Complicated…but the manifest confirms the original cooling configuration. Regardless of a Corvette’s journey, the manifest documents an original configuration.
Related C3 Documentation Differences
Ironically as data processing took a more prominent role in production, VIN assignment still took place on the factory floor identified by the contrast in font style that appears on the build sheet. On those build sheets studied the VIN is typed along with key codes using a manual typewriter. A small station was setup at the end of the paint booth where VIN was assigned, riveted to the driver’s side windshield post and key codes assigned. Box 9 (top right corner) illustrates the pre-printed portion 1Z8748S (top) and the typewritten portion of the VIN (bottom) in Figure 1 and 4.
Once Key Codes and assigned VIN were typed onto the manifests they were distributed to each assembly line. It would not be until production moved to Bowling Green that VINs were pre-assigned (upstairs) before production began on the body.
The trim and body paint tag as a production document further underscores the point that 1968-72 production techniques differ from later C3 production. The trim tag station was moved some time during 1975-76 model year to accommodate the need for space to match the increase in production during the mid to late 70’s. The station was moved between paint booth 1 and booth 2. As a result, body build tags for Corvettes built prior to 1975 were not painted while trim tags after 1975-76 was painted after the primer coat and first paint coat. Not surprisingly a relationship exists between trim tags and build sheet. The build sheet lists RPO code for paint and interior referenced on the trim tag. It also populates the manifest with the broadcast codes for matching interior parts such as carpet, seat belts, steering wheel, steering column, and related trim.
What disappears from build sheets after 1973 is the scribbled reference to the three-digit Body Shop job number. The job number was assigned for a vehicle and body panels marked as they were prepared for assembly. This job number was also hand written on the Corvette Order Copy with the chassis copy glued to the gas tank. It appears that by the mid-seventies, this practice was discontinued. However, the job number was still used throughout C3 on body panels to track companion panels through the body shop.
Late model C3s should be the best-documented Corvette models among the first three generations, but much needs to be researched, studied, and documented. We know the application of processing engineering techniques took on a greater role in the mid-’70s and included the increased use of data processing to improve productivity while maintaining production costs.
The publication of this article hopefully will stir passion for discovery, discussion for teasing topics of personal interest, and publication of new information that will contribute to the body of knowledge for the late-model series of the third generation. Students of C3 production documents are encouraged to flip the traditional perspective180 degrees. Instead of peering forward from the 1968-72 production period, glance backward from Bowling Green production to the early methods of the St Louis assembly plant. Given this perspective, three distinctive periods can be arbitrarily outlined and used to set a course for study of C3 production documents. These periods are distinguished as:
- 1968-72 evidenced by use of
- Corvette Order Copy as the first tank sticker
- Exception control letter codes
- Body broadcast copy and a chassis broadcast copy
- 1973-81 evidenced by the use of
- The single page multi-copy manifest
- Chassis copy of the manifest glued to the gas tank
- More prominent use of broadcast codes
- 1981-82 evidenced by
- VIN assignment prior to body build,
- Expanded use of data processing and first use of bar codes
- Manifest copies saved and sold by the National Corvette Museum
Much can be learned from the study of late model production documents. Our knowledge of 1968-72 Corvette production documents must not allow us to fall into complacency but rather serve as a source of inspiration to search, study and document the balance of C3 production.
Any Corvette owner that is familiar with their models DNA and production documents surely understands the importance of getting free auto insurance quotes to make sure that their prize possession is covered in case of any damage that can occur over time.
The author and The Corvette Restorer thank Ed & Cindy Foss of Roanoke, Indiana for permitting the use of these very unique production documents used in this article.
410 32nd Avenue North
Myrtle Beach, SC 29577
General Owner Search Information
For Corvettes sold in the US:
The General Motors Dealer Invoice service is managed by Allied Vaughn, a tier one supplier of GM. For copies of a GM vehicle invoice, please visit www.gmmediaarchive.com oremail the Request for Vehicle Invoice form to email@example.com. As of March 1, 2005 the cost for this service is $50.00 per invoice. If paying by credit card, your account will be charged within two business days of fulfillment. Fulfillment is expected to take 2 to 3 weeks. If paying by check or money order, please mail your check or money order and a copy of this form to:
Attention: GM Vehicle Invoice
Livonia, MI. 48150
Invoices are available for vehicles* in the following model years:
Chevrolets since 1977
Pontiacs since 1987
Buicks since 1982
Cadillacs since 1980
Oldsmobiles since 1977
GMC since 1976
*Fleet and exported vehicles excluded.
Please feel free to contact our local management team with any suggestions or concerns. Email or call:
Chevrolet Restoration Kits may include the following information: vehicle highlights, color codes, wheel/tire facts, engine/transmission/suspension specifications, standard equipment, options information, trim package information, brake specs, suspension information, vehicle features, exterior and interior dimensions, engine options, production numbers, technical bulletins and VIN/serial number decoding information. Thsi information comes from original GM-produced documents such as data books/specification guides, AMA specs, price schedules, etc.
For Corvettes sold in Canada:
Vintage Vehicle Services offers special restoration packages which are very different from those that are offered for free in the US. These packages document your exact car, based on its VIN, listing options, production date, selling dealer, trim and paint codes, etc. on G.M. letterhead. These packages are available for any Canadian sold Corvette, or even U.S. sold cars if they are 8 years old or newer. The price (as of June 2002) is $48.15 Canadian including shipping and taxes. Call them with your Vehicle Identification (Serial) Number toll-free (in Canada) 1-888-467-6853, between 8 a.m. and 5 p.m. EASTERN Time. (Outside Canada 1-905-440-7636) or contact George Zapora via email. For more detailed information about Vintage Vehicle Services, please visit: http://www.gmcanada.com/english/maintenance/parts/parts_vint.html.
There is also a web site you can use to contact them:
Vintage Vehicle Services
1908 Colonel Sam Drive
Oshawa, ON L1H 8P7
Mail Code: CA1-160-001
Toll Free in Canada: 1-888-467-6853
Build Sheets From the National Corvette Museum
The National Corvette Museum sells build sheets for 1981 to 2005 Corvettes. They are $30 per sheet for NCM Members and $40 per sheet for Non-Members. For more information, please visit: National Corvette Museum Build Sheets