Help decode vin on my 1968 Tempest Custom
 

The vin is 235378P263238. I've find this below but the last 6 are don't align with what I've found since the last 6 digits should start with a 6 or a 1 for V8's. Mine has a 350 V8 in it.

1st digit - Division - 2 = Pontiac

2nd & 3rd digits - Series:
33 = Tempest (1965-70)
33 = LeMans T-37 (1971)
35 = Tempest Custom (1965-70)
33 = LeMans (1971)
37 = Tempest LeMans (1965-70)
37 = LeMans Sport (1971)
39 = Tempest Safari (1967-69)
42 = GTO (1966-71)
4th & 5th digits - Body Code:
07 = 2-door sedan (post)
17 = 2-door coupe
27 = 2-door sedan (post)
35 = 4-door wagon, 2 seat
36 = 4-door wagon, 2 seat,
dual action tailgate
37 = 2-door coupe
39 = 4-door coupe
46 = 4-door wagon, 3 seat,
dual action tailgate
67 = 2-door convertible
69 = 4-door sedan

6th digit - Model Year:
5 = 1965
6 = 1966
7 = 1967
8 = 1968
9 = 1969
0 = 1970
1 = 1971
7th digit - Assembly plant:
A = Atlanta, GA
B = Baltimore, MD
C = Southgate, CA
D = Doraville, GA
E = Linden, NJ
G = Framingham, MA
K = Kansas City, MO
P = Pontiac, MI
R= Arlington, TX
U = Lordstown, OH
V = Bloomfield, IL
X = Kansas City, KS
Z = Fremont, CA
1 = Oshava, Ontario Canada

Last 6 digits - Production sequence starting at 600001
at all plants, except V8 models which started at 100001.

Rollover to 200,000+. Pontiac plant production was in excess of 199,999 V8s.
Was your car built in the summer of 68?

I got it when I was 15 from an estate sale, that was in 1993. I'm not sure if it was built in the summer or not but what you're saying makes sense.

Build date is on the Fisher Body plate located on the upper left side cowl. First line will begin with a two number, one letter code. Numbers are the month, letter is the week of the month.

ex: 05A = First week of May

Attachment 567254It was made in the 3rd week of March

That’s the date the body shell was built.

You’d need the PHS docs for final assembly and invoice dates. If original engine, you can compare those components to these others.

10,127th 23537 Tempest Body built by Fisher for Pontiac Plant.
163,238th V8 car produced by Pontiac Plant

I knew the number starts at 100,001. but the math got in the way. :o