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Topic: data plate decoding

in Forum: C3 General Discussion


data plate decoding

Posted: 10/9/06 5:33pm Message 1 of 6
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Need some help decoding the forward door jam data plate on my '81.  Seems none of the codes stamped on the data plate match codes I see listed in the Black Book (and other tables found on web sites). 

Now, I'll be the first to admit that the plate does not look original - more like a replacement.  And if it is a replacement, I've considered the fact there may be errors.  But I want to figure out what the original data is on my car.  Here is a pic of the dataplate.  Any help is greatly appreciated.


Jeff S.




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data plate decoding

Posted: 10/9/06 6:13pm Message 2 of 6
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
B = 81
08 = August
A = 1st week of month (Aug)

64I = Camel leather (some BG built '81 cars have the letter "I" instead of "2")
14L/14U should be paint color, but I have nothing on this code either.(is this 14, or 74? I can't see well enough to determine) 74 is listed as Dark Bronze, but usually as a two-tone. It is possible the car was ordered and built as a Dark Bronze, single color car. Stanger things have happened.

This is definitely a Bowling Green built car, built in the third month of production at BG. It would have been built the first or second day of August. The trim tag looks like a factory BG tag to me. Why do you suspect it has been replaced?

The car has definitely been painted. I can see the paint on the trim tag from where it was masked off.


Joel Adams
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data plate decoding

Posted: 10/11/06 9:19am Message 3 of 6
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The second code is 74L.  Assumed most of the current paint was original.  The hood was damaged by a truck and replaced with one from an earlier vette (still has the L-82 lettering on the hood, which obviously does not apply to '81).  The hood was painted to match and this may account for some of the overspray.  I guess I need to scratch some paint to check for color changes/layering.  My paint color does not look to be Dark Bronze, more metallic maroon.
 
Looking at the trim tag, the condition (very clean with no corrosion) and the fact it looks like a plain aluminum plate made me think it had been replaced.  Since it looks right to you, I'll go with that.
 
Any idea on what the codes 74U and E mean?  Thanks for the info and the effort in helping me figure this out.
 
Jeff S.



data plate decoding

Posted: 10/11/06 9:54am Message 4 of 6
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Burke, VT - USA
Joined: 1/23/2002
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Vette(s):
SOLD - "The Toy" - '70 Convertible
SOLD - "The Beast" - '90 ZR-1 (#682)
SOLD - "Betty" - '28 Ford Model A Tudor
SOLD - "BLKBRRD" - '78 Pontiac Trans Am
"BLUBYU" - '04 Coupe
The paint codes are designated as U for the Upper color and L for the Lower color (in your case 74L and 74U).
 
I'll have to look in a restoration book at home to see if there is an explanation for the E code.
 



Jim Olson 

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data plate decoding

Posted: 10/11/06 7:05pm Message 5 of 6
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
I think the "E" was for the enamel paint, but don't quote me on that. Earlier(St. Louis built) cars were laquer.

I saw some red/burgandy paint also on the kick panel trim there. That's one of the reasons I believe the car has been painted.
Before you start "scratching" on it, try this...take the sill plate off of one side, and look under it for a hint to the original color. Another good place to look is behind the door panels, and even under the t-top pads("headliners"), unless it is a glass top. These are places that normally wouldn't get painted on a respray. Most places will just mask off around the area.

Since this is a Bowling Green-built car, you can get a copy of the build sheet from the NCM. It will have the original color of the car on the build sheet. Adams' Apple2006-10-11 19:07:30


Joel Adams
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data plate decoding

Posted: 10/14/06 7:04pm Message 6 of 6
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Thanks for all the info - it's a big help.  And I'll be looking for evidence of a repaint in hidden areas like you mentioned. 



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