Quote Originally Posted by GrandPrixSE View Post
1994-00 Pontiac V.I.N. Defined


...

8th POSITION
ENGINE CODE
A = 2.3-L4, MFI
D = 2.3-L4, MFI
E = 3.4-V6, MFI
G = 5.7-V8, MFI
H = 2.0-L4, MFI
J = 3.1-V7, SFI
K = 3.8-V6, MFI
L = 3.8-V6, MFI
M = 3.1-V6, MFI
P = 5.7-V8, MFI
S = 3.4-V6, MFI
T = 3.1-V6, MFI (93-94)
T = 2.4-L4, MFI (96-00)
X = 3.4-V6, MFI
1 = 3.8-V6, MFI
3 = 2.3-L4, MFI
4 = 2.2-L4, MFI
Just to add to this ... I believe that:

Code "K" was 3.8L Naturally Aspirated
Code "1" was 3.8L Supercharged

(1998 model year at least)