Originally Posted by cheyenne shortstep (Post 7470204)

Here's one from a '71 my buddy just picked up. Why does it say Custom Sport Truck instead of Cheyenne?

Originally Posted by 71CHEVYSHORTBED402 (Post 7470363)

Clean looking spid too. The upper LH corner has come undone a bit on mine. I figure to cut the bad off, and match it with 3M protection film. May even top the entire spid off with another sheet. That is unless someone has a better idea.

Originally Posted by SS Tim (Post 7471051)

Since you are pushing for an original appearing truck I'd advise against altering the SPID. Generally I advise people to have a reproduction SPID made and attach it to another restored glovebox door thus keeping the original safe and intact. Keeps you from having the dreaded repaint masking line around the SPID as well.

Originally Posted by Ed F (Post 7480784)

Did GM start laminating them at some point. And if so about when did that happen?

Originally Posted by Ed F (Post 7480784)

I imagine there are reproduction ones out there. How can you tell if it's original or a reproduction?

Originally Posted by Ed F (Post 7480784)

In a case like mine where the truck no longer retains the original, is there a way to get the correct information to make an accurate reproduction.

Originally Posted by Ed F (Post 7480784)

Is there any way to verify if the truck was built to the SPID or if the SPID was created to match the truck?

Originally Posted by Keith Seymore (Post 7480806)

Yes. I don't remember what model year but it varied by final assembly location. My '87 is laminated, and I think my '80 was laminated.



Site member "chipflyer" does reproductions. I'm sure he can tell an original from a reproduction. http://outintheshop.com/



You can contact the GM Heritage Center Archives, depending on your model year. For US built and/or sold light trucks after 1976 you can send them your VIN and $50 and they will return the actual vehicle invoice for your specific truck, which includes RPO content and pricing.

http://www.gmmediaarchive.com/?page=1

GM of Canada has information reaching a little farther back, for vehicles sold in Canada, or vehicles produced in Canada for US consumption.

http://www.vintagevehicleservices.com/options.html

If you don't fall in either of those categories you are out of luck.



For the original build: The SPID is a service document. The truck is contented and all of the build information broadcast throughout the assembly plant to the areas required. The build manifest, specific build sheet, tuneup labels, tire pressure labels, VIN tag and SPID document are all created to match the truck as a result of that process. The build sheet is what communicates to the assembly floor how the truck is to be built.

40 years after the fact: It's a mixed bag. The hardcore restorer will build the truck as originally equipped; some percentage of guys build the truck the way they want. A few will make a new SPID to match the added content; from what I've observed most do not go to that effort*. You probably won't be able to tell unless (a) you have the build sheet or something else documenting the original content or (b) you ask them.

*In reviewing this thread I see one person that made a new SPID to match their added content.

K

Originally Posted by cheyenne shortstep (Post 7497458)

jamesmadconductor, nice looking truck. Does it have Cheyenne emblems?

Canuckvetter, that looks like a 67 GBD by the ridge around the SPID label and the format of the SPID? I could be wrong though.

Originally Posted by jamesmadconductor (Post 7496506)

My '71 also says Custom Sport Truck after the Z84 option. I will reply to this thread with my SPID below.

Originally Posted by jamesmadconductor (Post 7496510)

My 71 C20 Cheyenne's SPID and an exterior shot

Originally Posted by geunther (Post 7490327)

72 Cheyenne Super. Grease pencil underneath. I never noticed that before.

Originally Posted by SS Tim (Post 7497967)

Not much I would change there except maybe to revert to a set of white wheels and white hubcaps as it was originaly built.

Originally Posted by SS Tim (Post 7498663)

Your truck looks so much better with the sheetmetal on it! :-)

Originally Posted by FirstOwner69 (Post 7498677)

I ALMOST posted that one! ;) I thought the chassis shot showed the size differential better.

Originally Posted by Ol Blue K20 (Post 7498706)

I love your truck, but Tim's right...much better looking with the sheet metal...

Originally Posted by FirstOwner69 (Post 7498710)

Here's a loaded 1970 CST/20 big block on the Phoenix Craigslist I've been admiring. It even has an early nav system mounted on the dash above the radio. Too bad it's not a 1 ton Longhorn Tim :) Looks really original.

Originally Posted by SS Tim (Post 7498749)

Nice truck! While not my first choice of series or color it would be nice to have. Though the fact it appears to be a flat towed vehicle does bother me. After all to the best of my knowledge TH400 were never approved for it.

If you get more info or pictures send them my way.

Originally Posted by FirstOwner69 (Post 7499028)

I saw the brackets also and thought the same thing. I wonder if they were for some other purpose. They do look like Roadmaster brackets though. It does have leaf springs.

Jim

Originally Posted by SS Tim (Post 7509818)

Canuckvetter, That existing Oshawa SPID is a nice one in itself. Is there a better picture posted somewhere? It would be a nice addition to my collection.

Originally Posted by SS Tim (Post 7509818)

Canuckvetter, That existing Oshawa SPID is a nice one in itself. Is there a better picture posted somewhere? It would be a nice addition to my collection.

Originally Posted by SS Tim (Post 7510007)

Thanks for taking the time. As to the other two need you even ask? Of course we would like to see them as well!!! :-)

Originally Posted by SS Tim (Post 7498185)

The stock, base tires/wheels on a 71 C20 were tubeless 8.75-16.5C(6PR) nylon tires on 16.5x6.0" white steel wheels with painted hub caps. Much like the picture here. However it is very likely that your truck had larger tires at some point as most campers did. Most often it was the rear only that would have larger 10-16.5 or 12-16.5 tires. At the time these were a semi-low profile tire and not like the high aspect ratio of today's "off road" tires. The White 71 Cheyenne Super is a reasonable example.

If you want a steel spoke wheel like the classic Jackman Duplex they work, but present a very dated (cheap?) look to many people. In the typical White with pinstripes they will look the period part. My favorite of this style were the 6 spoke.

That said my personal favorite are slots. In fact there is a thread you need to check out too.
http://67-72chevytrucks.com/vboard/s...d.php?t=372115
If I ever find an affordable 4000lb+ rated, forged billet 16" period style slot I'll be happy.

Biggest problem is 16.5 wheels need 16.5 tires. They are expensive and limited availability. But they are out there including 12-16.5 camper tires.

If you are driving it 16" or 17" make more sense. There are a number of threads detailing the use of easy to find Ford 16" steel wheels allowing the use of available radials and stock Chevy hubcaps. Forgive me for not providing one of my everpresent links!

Originally Posted by Ringo934 (Post 7522609)

Here's mine, although I suspect it is a reproduction one.