The engine number is stamped on the front of the block above the fuel pump
Body Prefix Number is stamped on the radiator support panel on the passenger side
After 1st January 1971 it was stamped on the passenger spring tower, parallel with the fender
Two I.D. plates: One located on passenger side bulk head after January 1973
Prior to that Ford started placing 8 holes in the firewall (for 2 tags) in September 1972
So some Setember 1972, all 10th 11th and 12 month 1972 XA's came from the factory with a single tag and with an extra 8 holes for the double tags.
Depending on where they put the single tag, some in middle of 8 holes and some to the right, usually there are still an extra 4 holes visable.
Remember the tags for 1973 and after are shorter so NONE of the 8 holes are used by the single tag
Decoding the Body Prefix Number:
All Falcon GT’s have the same engine number and Body Prefix number
Prior to 1971 Ford used a dual numbering system
They had a V.I.N. (Vehicle Identification Number) which was different to the body prefix number/engine number
The V.I.N. number as stamped on the front edge of the passenger side spring tower, and body prefix and serial number as stamped on the passenger side front of the radiator support panel
The body prefix number also corresponds to the number stamped on the I.D plate
From Jan. 1971 onwards, Ford went to the 3 way system
Body prefix and serial number as appeared on the I.D. Tag was the same on the engine and spring tower
Body prefix numbers of Australian produced cars:
JG33AB12345
J – identifies the country of production (Australia)
G – identifies the assembly plant (Broadmeadows)
66 – identifies the model of car (Falcon GT Coupe)
A – identifies the year of production (See chart below for year and month codes)
B – identifies the month of production (See chart below for year and month codes)
12345 – is a unique number identifying each vehicle
Date Codes:
Year Codes
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1972
M
B
R
A
G
C
K
D
E
L
U
S
T
1973
N
J
U
M
P
B
R
A
G
C
Y
D
E
Paint Codes:
J = Calypso Green
8 = Cosmic Blue
I = Jewel Green
G or T = Lime Glaze
U = Ultra White
7 = Walnut Glow
Z = Wild Violet
S = Yellow Glow
Q = Yellow Fire
A = Yellow Sand
X = Red Pepper
E or K = Wild Plum
Y = Kelly Green
A or O = Summer Gold
B = Onyx Black
C = Skyview Blue
3 = Polar White
P = Primer
Y117 = Rothmans Blue
Y345 = Readymix Orange
SPEC = Whatever You Like
Engine Codes:
T = 351 4V
H 351 4V GTHO only
Transmission Codes:
L = Four speed manual
B = Floor shift automatic
Trim Codes:
B = Black
W = White
A = Blue
G = Green
R = Red
Y = Burgundy
U = Dark Grey
C = Chamois
P = Parchment
S = Saddle
2 = Cloth Inserts. This code followed the trim colour code eg B2 was black with cloth inserts
Body Identification: 65H
Model Code: 18218
Production Numbers:
Coupes built July 1972 - September 1973 = 891 units
