|
1970
The 1970 Monte Carlo is a year
that is unique to the first generation of Monte Carlo’s. It is the only year
that Chevrolet had the three-digit rear axle ratio identifier “CCH for example
all of them started with C for Chevrolet” and the only year that they had a
month and day code “01 23 known as January twenty third” for the Monte
Carlo. The information that will follow will be from several sources and they
will very in accuracy. So believe only what you can confirm as the truth. Two
out of the three books are very similar to each other and are approved by
general motors but they do not
guarantee their accuracy.
1970 Monte Carlo Rear
Axle Decoding
C
GB
10
05
B
E
1.)
Vehicle installed in:
C=
Chevrolet
2.)
Rear Axle Types:
1970
AXLE CODES & RATIOS
From
Chiltons manual:
CCA
3.08 CCD 3.07 CCE 3.08 CCF 3.31 CCH 2.73 CCN 2.56 CCO 2.56 CCP 2.73 CCW 3.31 CCX
3.07 CGA 2.56 CGB 2.56 CGC 2.73 CGD 2.73 CGG 3.36 CGI 3.36 CKC 2.73 CKD 2.73 CKF
3.55 CKJ 3.55 CKK 4.10 CRJ 2.56 CRK 2.56 CRU 3.31 CRV 3.31 CRW 4.10 (CF 3.31 CW
3.31 KD 2.73 CH 2.73) “ The last four codes most likely were a mistake from
the author because they should be “CCF, CCW, CKD, CCH”
From
Haynes manual:
CCG
3.36 CCP 2.73 CGF 3.08 CCH 2.56 CCW 3.31 CGG 3.36 CCL 2.56 CCX 3.07 CGI 3.36 CCM
2.56 CGA 2.56 CKC 2.73 CCE 3.08 CCN 2.56 CGB 2.56 CKD 2.73 CCF 3.31 CCO 2.56 CGC
2.73 CKF 3.55 CGD 2.73 CGE 3.08 CKJ 3.55 CKK 4.10 CRJ 2.56 CRK 2.56 CRL 3.07 CRM
3.07 CRU 3.31 CRV 3.31 CRW 4.10 (CF 3.08 WF 3.23 CH 2.73 XC 2.78 CW 3.31 XE 3.08
KD 2.73 XF 2.73) The last eight are the same thing as the Chiltons manual most
likely a mistake was made but just in case there they are.
From
the Chevrolet by the numbers book:
CCA
3.08 CCB 3.36 CCD 3.07 CCE 3.08 CCF 3.31 CCG 3.36 CCH 2.73 CCL 2.56 CCM 2.56 CCN
2.56 CCO 2.56 CCP 2.73 CCW 3.31 CCX 3.07 CGA 2.56 CGB 2.56 CGC 2.73 CGD 2.73 CGE
3.08 CGF 3.08 CGG 3.36 CGI 3.36 CKC 2.73 CKD 2.73 CKF 3.55 CKJ 3.55 CKK 4.10 CRJ
2.56 CRK 2.56 CRL 3.07 CRM 3.07 CRU 3.31 CRV 3.31 CRW 4.10
3.)
Month Codes:
1=
January 2=Febuary
3=March 4=April
5=May 6=June
7=July
8=August 9=September
10= October 11=November
12=December
4.)
Day Codes:
05=
fifth day of the month “1-31 days”
5.)
Plant Source:
G=
Detroit Gear & Axle
B= Buffalo NY
W= Warren MI
6.)
Positraction sources:
D= Dana
Positraction Differential
E= Eaton Positraction Differential
W= Warren Motive
If your car did
not have a positraction source code it does not have positraction.
1971 and
1972
1971 & 1972 Monte
Carlo Rear Axle Identification
The
1971 Monte Carlo is a year that is unique to the first generation of Monte
Carlo’s. It is the year that Chevrolet went to the two-digit rear axle ratio
identifiers “CH for example” and the first year they used a Julian date
“001-365.” The 1972 Monte Carlo is a year that is unique to the first
generation of Monte Carlo’s. It is the year that Chevrolet did not make a
super sport but instead made a Monte Carlo Custom. As stated before the
information will be from several sources and they will very in accuracy. So
believe only what you can confirm as the truth. Two out of the three books are
very similar to each other and are approved by general motors but they do not
guarantee their accuracy.
1971 & 1972 Monte
Carlo Rear Axle Decoding
KD
C
314
2
E
1.)
Rear Axle Types:
1971 AXLE CODES &
RATIOS
From
the Chiltons manual:
CF
3.31 CW 3.31 GA 2.56 GB 2.56 GC 2.73 GD 2.73 GF 3.08 GG 3.36 GH 2.73 GI 3.36 GN
3.08 KD 2.73 RU 3.31 RV 3.31 RW 4.10
From
the Haynes manual:
CW
3.31 GC 2.73 GD 2.73 GF 3.08 GG 3.36 GH 2.73 GI 3.31 GN 3.08 KD 2.73 RU 3.31 RV
3.31 RW 4.10
From
the Chevrolet by the numbers book:
CF
3.31 CH 2.73 CW 3.31 GA 2.56 GB 2.56 GC 2.73 GD 2.73 GF 3.08 GG 3.36 GH 2.73 GI
3.36
GN 3.08 KD 2.73 RU 3.31 RV 3.31 RW 4.10
1972 AXLE CODES &
RATIOS
From
the Chiltons manual:
CF
3.31 CW 3.31 GF 3.08 GG 3.36 GH 2.73 GI 3.36 GN 3.08 RU 3.31 RV 3.31 RW 4.10
From
the Haynes manual:
CW
3.31 GC 2.73 GD 2.73 GF 3.08 GG 3.36 GH 2.73 GI 3.31 GN 3.08 RU 3.31 RV 3.31
RW 4.10
From
the Chevrolet by the numbers book:
CF
3.31 CH 2.73 CW 3.31 GC 2.73 GD 2.73 GF 3.08 GG 3.36 GH 2.73 GI 3.36 GN 3.08 KD
2.73
RU 3.31 RV 3.31
2.)
Plant Codes:
-
B=
Buick
-
C=
Buffalo
-
G=
Detroit Gear & Axle
-
K=
GM of Canada
-
O=
Oldsmobile
-
P=
Pontaic
-
W=
Warren MI
3.)
Julian Date/Day of Year:
4.)
Shift Codes:
-
1=
1ST Shift
-
2=
2ND Shift
-
3=
3RD Shift
5.)
Positraction sources:
-
D= Dana
Positraction Differential
-
E= Eaton
Positraction Differential
-
W= Warren
Motive Positraction Carrier
If
your car did not have a positraction source code it does not have positraction.
Thank
You Alex for taking the time to research, and write all of this out for us.
| 
