I recently removed the gas tank in order paint things and found what I thought was the build sheet for this car; HOWEVER, the vin numbers on the sheet and the car dash do not match
The dash tag says I have a Z28 but the build sheet is for a Berlinetta--- BUT...the build sequence number is off by one digit e.g. .100xx3 vs 100xx4--mine is the later number
Everything I have seen until now tells me that the car is original and has never been messed with
What are the chances that the build sheet I found is really for the previous built car?
Has anyone ever seen this kind of thing?

P.S. the car is an 81

From what I have read, it was not uncommon for the workers to stuff a build sheet from another car into a car.

Is the id number stamped anywhere ont body or subframe for the 81?

I've owned two Camaros that had the build sheet for another car just a few numbers away. Not uncommon at all from my experience. It sure is a disappointment when you realize the build sheet you found is not actually for your car.

Build sheets were trash once the car was assembled, so lots of them ended up stuck inside a car somewhere just to dispose of them, and often not in the right car.
I once found a 70 Monte Carlo build sheet hidden in the rear seat of a Camaro. Both cars were built at Van Nuys on the same day.

Out of curiosity, which plant is your car from, djw?

Post up some info. Maybe someone here has the car to match the build sheet you found. Would'nt THAT be cool!!!

speaking of poor and lazy labor :)

^what does that mean . their job wasn't to make sure some guy 30 plus years later gets a build sheet for his car , it was to build the car. the line worker could care less about a build sheet after his job on the car was done . at 500 cars a shift it got a little busy . mostly they ended up in the garbage, how is that poor and lazy labor ?

Well I thought these belonged to the cars - and should be a prove of the manufaturing process.

If they werent intendet for this, I was completely wrong and misunderstood the whole deal.

As I think of it, I never heard of these buildsheets in German cars, so it is probably a cool thing the Americans did, yet again.

all cars need some sort of reference guide during the assembly process ( unless all cars are exactly the same) they were assembly line reference tools for the workers to put the right parts , paint , and options on the car . they were also used by the inspectors to make sure everything was correct. some inspectors trashed them some didn't . after the car was done their was no need for them . as in the norwood assembly plant the were discarded . these cars were mass produced by the thousands and no one thought much about collecting them in the days when they were new .

ive even heard somewhere of firebird b/s in a camaro

all cars need some sort of reference guide during the assembly process ( unless all cars are exactly the same) they were assembly line reference tools for the workers to put the right parts , paint , and options on the car . they were also used by the inspectors to make sure everything was correct. some inspectors trashed them some didn't . after the car was done their was no need for them . as in the norwood assembly plant the were discarded . these cars were mass produced by the thousands and no one thought much about collecting them in the days when they were new .

your right, makes complete sense.
I seem to tend to forgot the sheer mass of cars produced. (Compared to German manufacturers :p )

So please pardon my comment.

Sure is strange how things change.
Kind of makes you wonder how the things we do now will affect things
years from now.
ANYHOW...here is some info from the build sheet I have.

Car was delivered to:
A.J. Foyt Chevrolet, Houston Tx.
biult in:
Van Nuys Ca. 09/16/81
vin 1G1AS87H4BL105403

Thanks for all the info guys good luck.

if you look under the hood, behind the heater, a/c box the vin is stamped in the fire wall. that'll tell you if some one messed with the vin tag.