Determine production date from vin

Here is a chart from an earlier posting. Maybe this will be able to
help.

1 G 1 A Y 8 7 6 4 B S 420
1 2 3 4 5 6 7 8 9 0 1 2


1st digit: Country of origin: 1 = USA, 2 = Canada.
2nd digit: G = General Motors
3rd digit: Division, 1 = Chevrolet.
4th digit: Restraint system:
A = Non-passive, B = Automatic belts, C = Inflatable restraint
5th digit: Series: P = Camaro Sport Coupe, S = Camaro Berlinetta Y =
Corvette
6th & 7th digit: Body Style: 87 = Sport Coupe
8th digit: Engine : See specific year for breakdown.
9th digit: Check digit - used to verify that the VIN was recorded
correctly.
10th digit: Year: B = 1981
11th digit: Letter indicating assembly plant S = St. Louis, 5 =
Bowling
Green
12th through 17th digits: Sequential production number starting with
400001.


If this does not help you can go back a few pages on the forum and
check. The discussion was on VIN numbers.