Why do some SPIDs have plastic and others don't? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

davepl · 06-26-2014, 10:26 PM

Mine is among those that do not, but its a pretty well documented truck and I have the build sheet and it came from an old man who bought it new, so I'm pretty confident it's the real, original SPID.

Some have plastic on them. Did it vary by plant, how much the supervisor drank the night before, or some fancy heuristic?

**70cst** · 06-26-2014, 10:34 PM

Good question... I don't know but I will wait for someone who has the answer...

71 super · 06-26-2014, 10:37 PM

It was a year thing. The earlier trucks did not have them, seems to have changed in 71

**jocko** · 06-26-2014, 10:55 PM

some collector at GM got tired of seeing where someone wrote all their oil change mileage on the SPID, and, voila! What 71Super said above is the case. I personally thought it came in at 72 - but then I remembered my 71 had a clear sheet over it also.

**leddzepp** · 06-26-2014, 11:18 PM

Quote:

Originally Posted by davepl

how much the supervisor drank the night before

This is the answer to almost every "why" question.

**too much stuff** · 06-26-2014, 11:38 PM

Quote:

Originally Posted by 71 super

It was a year thing. The earlier trucks did not have them, seems to have changed in 71

I believe that is correct, the change was in 71

Keith Seymore · 06-27-2014, 07:54 AM

Quote:

Originally Posted by leddzepp

This is the answer to almost every "why" question.

No...it's not.

Supervisors drinking wasn't really the problem.

Keith Seymore · 06-27-2014, 07:58 AM

Quote:

Originally Posted by davepl

Mine is among those that do not, but its a pretty well documented truck and I have the build sheet and it came from an old man who bought it new, so I'm pretty confident it's the real, original SPID.

Some have plastic on them. Did it vary by plant, how much the supervisor drank the night before, or some fancy heuristic?

In MY day (starting in 1979) it was a two step operation:

The SPID was printed on regular adhesive backed paper, and then there was a separate clear overlay (slightly larger) that was placed over the top.

So - it's possible a few could have missed the clear overlay if somebody got lazy or in the hole.

K

**leddzepp** · 06-27-2014, 11:02 AM

Quote:

Originally Posted by Keith Seymore

No...it's not.

Supervisors drinking wasn't really the problem.

Well, maybe not the supervisors...

jmj4 · 06-27-2014, 11:07 AM

Quote:

Originally Posted by too much stuff

I believe that is correct, the change was in 71

My 70 GMC (atlanta plant/May 70) has the clear but my 70 GMC parts truck (freemont plant) does not. Since my truck is late in the model year the change may have started in some plantsprior to the 71 year roll out.

**john** · 06-27-2014, 12:44 PM

Here's a 70 from fremont plant with the plastic cover.

davepl · 06-27-2014, 01:52 PM

And mine's a 70 without it, so it must have happened sometime during that year.

We need a truck wiki for all of this trivia!

jmj4 · 06-27-2014, 04:27 PM

Quote:

Originally Posted by davepl

And mine's a 70 without it, so it must have happened sometime during that year.

We need a truck wiki for all of this trivia!

What plant? Build date?

06-26-2014, 10:26 PM	#1
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Why do some SPIDs have plastic and others don't? Mine is among those that do not, but its a pretty well documented truck and I have the build sheet and it came from an old man who bought it new, so I'm pretty confident it's the real, original SPID. Some have plastic on them. Did it vary by plant, how much the supervisor drank the night before, or some fancy heuristic? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

06-26-2014, 10:34 PM	#2
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,365	Re: Why do some SPIDs have plastic and others don't? Good question... I don't know but I will wait for someone who has the answer... __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

06-26-2014, 10:37 PM	#3
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,079	Re: Why do some SPIDs have plastic and others don't? It was a year thing. The earlier trucks did not have them, seems to have changed in 71 __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

06-26-2014, 10:55 PM	#4
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,954	Re: Why do some SPIDs have plastic and others don't? some collector at GM got tired of seeing where someone wrote all their oil change mileage on the SPID, and, voila! What 71Super said above is the case. I personally thought it came in at 72 - but then I remembered my 71 had a clear sheet over it also.

06-27-2014, 12:44 PM	#11
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: Why do some SPIDs have plastic and others don't? Here's a 70 from fremont plant with the plastic cover. Attached Images __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

06-27-2014, 01:52 PM	#12
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Why do some SPIDs have plastic and others don't? And mine's a 70 without it, so it must have happened sometime during that year. We need a truck wiki for all of this trivia! __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible



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