help interpreting Parts Catalog

[Keith M.]

Not my first time at the parts cat so I know some..but some remains cryptic. So looking at the front convertible black weatherstrip for my 69 ....am "guessing" it is 6258083. But...WTF below it is "Y67 (exc aux top)"?? And there are other places that show Y67 or Y37...what are those. AFAIK "Y" by itself means applies to all years shown to the left unless a more specific designation is made elsewhere.

Lastly, what are the numbers such as 19.80 and 44.25??

I have looked at the key which helps a bit ...but not a ton.

[Gary B.]

Re: help interpreting Parts Catalog

Unit prices.

[Gary B.]

y07 coupe
y67 convertible
y37 Z06

[Peter H.]

Re: help interpreting Parts Catalog

Seasons Greetings Keith. The 19.80 And 44.25. Were Suggested List Price For That Particular Part. I Know This Only Answers Part Of Your Questions Peter Parts ( My Nickname ) 🇨🇦

[Keith M.]

Re: help interpreting Parts Catalog

From a posting on the Corvette Forum. I can’t speak to the veracity of the info.

y07 coupe
y67 convertible
y37 Z06

You guys are awesome. So what if there both a Y and a Y67 as shown in the pic above? It is confusing because that ENTIRE section 14 is for "Convertible Top Hardware"

[Keith M.]

Re: help interpreting Parts Catalog

good example here...which rear top set would be correct for a 69 vert that did not come with aux top??

[Duke W.]

Re: help interpreting Parts Catalog

From a posting on the Corvette Forum. I can’t speak to the veracity of the info.

y07 coupe
y67 convertible
y37 Z06

Y is the GM internal designation for the Corvette. Similarly B is for the full size Chevrolet and A is Chevelle.

Within each body family there is a model number for each body style, sedan, coupe wagon convertible, etc. . For the 1963-1964 Y-body there are two models: Coupe (model 837) and Convertible (model 867). You will see these numbers or abbreviations in the VIN. For example, my SWC's VIN begins with 30837S... 3 indicates 1963, 837 is the model number (Coupe), and S is the St. Louis plant. For 1965 -1972 the model numbers were expanded to 19837 and 19867.

At some point, I believe it was the US DOT that standardized VIN nomenclature to 13 digits in the early seventies. As an example my '76 Cosworth Vega VIN begins with 1V77O6U.

1 = Chevrolet
V77 = abbreviation of the Vega Hatchback body, HV77 (H-body is the entire Vega/Monza family and other GM Division versions)
O = engine, 122 CID
6= model year 1976
U = Lordstown plant

If you have a complete P & A catalog there are pages in the front that list model numbers and how to decode a VIN and other useful information like explaining model and engine engine displacement and other identifiers such as the abbreviations "high performance" and "special high performance", and it can get dicey. For example, the camshaft for the '65 L-79 is listed as "special high performance with hydraulic lifters" and the '65 365/375 HP 30-30 camshaft it listed as "special high performance with mechanical lifters, fuel injection".

Abbreviations for the above descriptions are used. For example, if I'm looking for a part unique to the Cosworth Vega engine or any other part specific to the RPO Z09 Cosworth Vega Equipment Package it will be annotated H(122). There was no need to list HV77 because the Cosworth Vega package was only available with the HV77 Vega Hatchback Coupe.

So to summarize, Y67 is for a Corvette Convertible and Y37 is for a Corvette Coupe. I have no idea how Z06 is involved. Z-06 was only used for the 1963 Special Performance Equipment Package. This this was just an option number, not a model number, and this option number did not reappear until the a later generation, but I don't know if it's indicated in the VIN of those later generations.

I don't know what Y07 indicates. It could be for a later generation Corvette model, but it does not apply to the C1-3 era.

Finally, there are lot of errors in the P & A catalogs and even more on the Corvette Forum.

Duke

[Keith M.]

Re: help interpreting Parts Catalog

Duke,
Great info. However, my question remains...... where there are two otherwise equivalent parts as in my post #6 where one is "Y" = corvette (3935579) and the other is "Y67" = corvette convertible (3919615) AND there is no equivalent part for a coupe = "Y37".....what would be correct for my convertible??? Even though Y applies as it is a corvette I would assume Y67 would be the one to get as it is a more precise designation??? One other unclear difference in the parts referenced above is that the first indicates "LWR FRT" and the other "RR RAIL". i do have the full catalogs and the front does contain some marginally useful decoder rings...
Keith

[Duke W.]

Re: help interpreting Parts Catalog

There are many cases where the P & A catalog is not real clear. Without looking at the actual weather strip pieces for '69 your guess is better than mine. Maybe another '69 owner can chime in and give you their interpretation. Also look in the AIM. If those parts were installed at St. Louis, which they probably were, there will be an assembly illustration along with the part numbers.

BTW, I doubt if any of these parts are available from GM. Maybe the various Corvette specialist parts outfits offer reproductions of those parts and have an illustration of where they all go or can cross reference the GM part number to the repro.

Using the P & A catalog is somewhat of an art. Here's an example. The Cosworth Vega has an anodized aluminum trim piece at the bottom of the grille, and two additional extensions that wrap around the bottom of the headlight housings. A buddy who bought one noticed that his was missing the two side pieces. The piece at the bottom of the grille is listed in Group !, Cooling - Grille - Oil System, which makes sense, but there was no listing for the side pieces, and the parts counter guys were stumped. I was buying a lot of parts for my SWC's restoration, so I asked if I could give it a try.

I can't recall the details, but often I'll use a "noun search" in both the Group I suspect the part is in or the whole book noun index at the front if I'm not sure of the group. In any event, I found the two side trim pieces. They were located in Group 2, Chassis Wiring... Lamps.

Go figure!

Duke

[Keith M.]

Re: help interpreting Parts Catalog

Duke..exactly! Part of what i am trying to assess is NOS stuff on fleabay. Happy Holidays!

[Ray K.]

Re: help interpreting Parts Catalog

Keith,

The weatherstrip you are looking for, I believe, is the GM #3974084. I researched a couple of my older P & A catalogs prior to the "Y" designation for Corvette models, and although not 100 % clear,it seems to me to be the 3974084. This is based on 20 years of Chevrolet parts experience. Duke's comment about a guess is entirely correct. When ordering any kind of trim part for a Corvette or any other Chevrolet product, illustrations were few, if any, and usually non-existent. So a best guess was often the situation as the catalog descriptive information was difficult to interpret.
Sometimes you had to order what you thought might be correct 2 or 3 times before you got the correct part you were seeking.

I have an older Paragon catalog which has a fairly good diagram of the weatherstrips for both a convertible and hardtop applications. The Paragon part number for a convertible was #4218- referenced as folding top front header weatherstrip. As we know, Corvette Central acquired Paragon a couple of years ago. If you go the the current CC website and look up weatherstrips - CC #633010 - it will reference both the GM #3974084 and the Paragon #4218 along with an illustration.

Hope this all helps.

Ray K

[Joe L.]

Re: help interpreting Parts Catalog

Not my first time at the parts cat so I know some..but some remains cryptic. So looking at the front convertible black weatherstrip for my 69 ....am "guessing" it is 6258083. But...WTF below it is "Y67 (exc aux top)"?? And there are other places that show Y67 or Y37...what are those. AFAIK "Y" by itself means applies to all years shown to the left unless a more specific designation is made elsewhere.

Lastly, what are the numbers such as 19.80 and 44.25??

I have looked at the key which helps a bit ...but not a ton.

Keith-------


As others have mentioned, in the parts catalogs "Y" indicates a Corvette model vehicle. "Y37" or just "37" indicates a Corvette coupe while "Y67" or just "67" indicates a corvette convertible.

The folding top header weatherstrip originally used for most 1969's was GM #3912840. The latter was discontinued in November, 1969 and replaced by GM #3974084 which may possibly have been used in PRODUCTION for very late 1969's. What's the difference between the two? I don't know but either will SERVICE a 1969. The 3974084 was discontinued without supercession in October, 1992.