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#1 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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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?
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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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#2 |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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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...
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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! |
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#3 |
Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,079
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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
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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 |
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#4 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,962
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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.
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#5 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,006
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Re: Why do some SPIDs have plastic and others don't?
This is the answer to almost every "why" question.
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#6 |
Roadtrip!
![]() Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,737
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Re: Why do some SPIDs have plastic and others don't?
I believe that is correct, the change was in 71
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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#7 |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,200
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Re: Why do some SPIDs have plastic and others don't?
No...it's not.
![]() Supervisors drinking wasn't really the problem. ![]()
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#8 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,200
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Re: Why do some SPIDs have plastic and others don't?
Quote:
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
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#9 | |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,006
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Re: Why do some SPIDs have plastic and others don't?
Quote:
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#10 |
Registered User
Join Date: Dec 1999
Location: Mississippi
Posts: 119
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Re: Why do some SPIDs have plastic and others don't?
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.
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1970 GMC Custom 1500 SWB 307/TH350 3.73 Positrac |
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#11 |
member #16
![]() Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: Why do some SPIDs have plastic and others don't?
Here's a 70 from fremont plant with the plastic cover.
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#12 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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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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#13 |
Registered User
Join Date: Dec 1999
Location: Mississippi
Posts: 119
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Re: Why do some SPIDs have plastic and others don't?
What plant? Build date?
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1970 GMC Custom 1500 SWB 307/TH350 3.73 Positrac |
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