©2014, Full-Size Chevrolet Research Group
Edited by Warren Leunig
Version: Thursday, 12-Nov-2015 09:33:20 EDT
Engine Pad Information
- Engine Pad
- 1964 Engine Suffix Codes
- 1965 Engine Suffix Codes
- 1966 Engine Suffix Codes
- 1967 Engine Suffix Codes
- 1968 Engine Suffix Codes
- 1969 Engine Suffix Codes
- 1970 Engine Suffix Codes
- Block Casting Number
Transmission Information
Engine Pad
The engine pad was stamped with the engine assembly plant, assembly date and application code. The location of that code was behind the distributor on L6 engines and in front of the passenger’s side cylinder head on V8’s.
Typical Engine Pad
The format of the engine code remained the same from 1964 through 1970. Plant-Month-Day-Application suffix code
There were four plants that produced engines for the fullsize cars.
F – Flint, Michigan (L6 and small block V8)
K – McKinnon Industries, Canada (L6 and small block V8)
T – Tonawanda, NY (small block and big block V8)
V – Flint, MI (small block V8 starting 1967)
In the above example:
T – Tonawanda, NY engine plant
04 – April
04 – 4th day of the month
IG – 396/325HP engine with Powerglide transmission
R – Rochester carburetor (Carb designation used only in 66)
6Y204760 – partial VIN# from a fullsize Chevy built at Wilmington, DE
From 1964-1967, the partial VIN# on the block was stamped on all engines with at least 300HP. In 1968, all V8’s had the partial VIN# stamped on the block.
PowerGlide 3 speed
A/C no-A/C A/C no-A/C
------ ------ ------ ------
230ci/140HP base L6 BQ B AF A
230ci Low Compression BS BA AL AC
230ci H.D. Clutch -- -- AG AE
230ci Low Comp. & H.D. Clutch -- -- AM AD
230ci Taxi -- BB -- AQ
230ci Taxi & Low Compression -- BV -- AN
230ci Right Hand Drive -- B -- AB
230ci RHD & Low Compression -- BA -- AH
230ci COPO 9645 -- -- -- AU
230ci COPO 9801 (Taxi w/A/C) -- WG -- AV
230ci COPO 9804 -- WF -- AW
*B and AM also used for RHD
PowerGlide Manual
------------- -----------
283ci/195HP base V8 D C
283ci Right Hand Drive D CA
283ci Low Compression DA CE
283ci RHD & Low Comp. DA CV
283ci H.D. Chassis -- CB
283ci COPO 9588 DG --
283ci COPO 9596 -- CC
283ci COPO 9631 DD CM
283ci COPO 9645 -- CW
327ci/250HP L30 S R
327ci RHD SH --
327ci COPO 9557 (240HP) -- RS
327ci COPO 9588 SN/SP RY
327ci COPO 9590 -- RZ
327ci COPO 9596 SQ --
327ci COPO 9631 SM/ST RH/RJ
327ci COPO 9645 -- RG/RM/RN
327ci/300HP L74 SB RB
PowerGlide Manual
------------- -----------
409ci/340HP L33 QG QC
409ci L33 T.I. Ign. QR QQ
409ci L33 COPO 9645 -- QS
409ci/400HP L31 -- QA
409ci L31 T.I. Ign. -- QN
409ci/425HP L31/L80 -- QB
409ci L31/L80 T.I. Ign. -- QP
|
PowerGlide 3 speed
A/C no-A/C A/C no-A/C
------ ------ ------ ------
230ci/140HP base L6 FR FM FL FA
230ci Taxi -- FK -- FP
230ci H.D. Clutch -- -- FF FE
PowerGlide Manual
------------- -----------
283ci/195HP base V8 GF GA
283ci Right Hand Drive GH GB
283ci Low Compression GG GD
283ci RHD & Low Comp. GI GE
283ci H.D. Chassis or M20 -- GC
283ci COPO 9565? -- GM
283ci COPO 9645 -- GJ
283ci COPO 9670 -- GY
283ci/220HP L77 GL GK
327ci/250HP L30 HC HA
327ci/300HP L74 HD HB
PowerGlide TH400 Manual
------------- ----------- ------------
396ci/325HP L35 Roch. Carb IG IV IA
396ci Holley Carb LB LC LF
396ci Transistor Ignition II IC IW
396ci/425HP L78 -- -- IE
PowerGlide Manual
------------- -----------
409ci/340HP L33 JE JB
409ci L33 T.I. Ign. JF JC
409ci/400HP L31 -- JA
409ci L31 T.I. Ign. -- JD
|
PowerGlide 3 speed
A/C no-A/C A/C no-A/C
------ ------ ------ ------
without K19 (smog)
250ci/155HP base L6 FR FM FL FA
230ci Taxi -- FK -- FP
230ci H.D. Clutch -- -- FF FE
with K19 (smog)
250ci/155HP base L6 GQ GP FY FV
230ci Taxi -- GR -- FZ
PowerGlide TH400 Manual
------------- ----------- ----------
without K19 (smog)
283ci/195HP base V8 GF -- GA
283ci Right Hand Drive GH -- GB
283ci Low Compression GG -- GD
283ci RHD & Low Comp. GI -- GE
283ci H.D. Chassis or M20 -- -- GC
283ci H.D. Clutch -- -- GU
283ci COPO 9591 -- -- GN
283ci/220HP L77 GL -- GW
283ci L77 H.D. Clutch -- -- GV
327ci/275HP L30 HC -- HA
327ci H.D. Clutch -- -- HE/KE?
327ci COPO 9669 HY -- --
327ci COPO 9818 (230HP) -- -- HZ
396ci/325HP L35 IG IV IA
427ci/390HP L36 -- IJ IH
427ci/425HP L72 -- -- ID
with K19 (smog)
283ci/195HP base V8 GT -- GK
283ci H.D. Chassis or M20 -- -- GS
283ci/220HP L77 GZ -- GX
327ci/275HP L30 HF -- HB
396ci/325HP L35 IC IN IB
427ci/390HP L36 -- IO II
|
PowerGlide 3 speed
A/C no-A/C A/C no-A/C
------ ------ ------ ------
without K19 (smog)
250ci/155HP base L6 FR FM FL FA
230ci Taxi -- FP -- FK
230ci H.D. Clutch -- -- FF FE
230ci COPO 9804 -- FW -- ??
with K19 (smog)
250ci/155HP base L6 GQ GP FY FV
230ci Taxi -- GR -- FZ
PowerGlide TH400 Manual
------------- ----------- ----------
without K19 (smog)
283ci/195HP base V8 GF -- GA
283ci Right Hand Drive GH -- GB
283ci Low Compression GG -- GD
283ci RHD & Low Comp. GI -- GE
283ci H.D. Chassis or M20 -- -- GC
283ci H.D. Clutch -- -- GU
283ci COPO 9591 -- -- GN
327ci/275HP L30 HC KL HA
327ci H.D. Clutch/COPO 9819 -- -- KE
327ci COPO 9569 HK/KJ -- KI/KK
327ci COPO 9610 HG -- --
327ci COPO 9670 -- -- HU
327ci COPO 9818 (240HP) HY (with 9669) -- HZ
327ci COPO 9819 -- -- KA
396ci/325HP L35 IG IV IA
396ci COPO 9565 (313HP) IY? IW --
396ci COPO 9627 ?? JI JJ?
427ci/390HP L36 -- IJ IH
427ci L36 SS427 -- IS IE
427ci/425HP L72* -- -- ID
no 67 ID motors were installed in cars according to records
with K19 (smog)
283ci/195HP base V8 GO/GT -- GK
283ci H.D. Chassis or M20 -- -- GS
283ci/220HP L77 GZ -- GX
327ci/275HP L30 HF KM HB
396ci/325HP L35 IC IN IB
427ci/385HP L36 -- IO II
427ci SS427 -- IF IX
427ci COPO 9627 -- JK JL
427ci/425HP L72* -- -- IK
no 67 IK motors were installed in cars according to records
|
PowerGlide 3 speed
A/C no-A/C A/C no-A/C
------ ------ ------ ------
250ci/155HP base L6 CR CQ CC/CN CA/CM
230ci Taxi/Police? CT CL CS CB
230ci H.D. Clutch -- -- CK CJ
PowerGlide TH400 Manual TH350
------------- ----------- ---------- -----------
307ci/200HP base V8 DR/DH DS/DK DO
307ci H.D. Clutch -- -- DQ
307ci M20 or HD Chassis -- -- DP
307ci Low Compression DW -- DU
307ci COPO 9??? D2 -- --
307ci COPO 9627 D4 D5? D6?
307ci COPO 9565?? DG/DJ DL --
307ci COPO 9??? H3 -- --
327ci/250HP L73 HJ/HK HM/HN HI
327ci H.D. Clutch -- -- HL
327ci COPO 9665 -- -- -- HR*
327ci/275HP L30 HC/HG HF/HH HA
327ci H.D. Clutch -- -- HB
327ci COPO 9665 -- -- -- HS*
396ci/325HP L35 IG IV IA
396ci Police IN IF IK
396ci COPO 9565 (313HP) IY? IW --
396ci COPO 9559 (IZ, I2, I3, I4)
396ci COPO 9627 (I5, JB)
427ci/385HP L36 -- IJ IH/(3S-Canada)
427ci L36 SS427 -- IS IE/(3T-Canada)
427ci L36 COPO 9626 (I6, I8)
427ci/425HP L72 -- -- ID
* Engine code for L73 and L30 with TH350, used in
late-year 1968 TH350 test fleet
|
PowerGlide TH350 3 speed
A/C no-A/C A/C no-A/C A/C no-A/C
------ ------ ------ ------ ------ ------
250ci/155HP base L6 ?? BB ?? ?? BG BA
250ci Taxi/Police BO BJ/BL ?? ?? BQ BP
PowerGlide TH350 TH400 Manual
------------- ----------- ----------- ------------
327ci/235HP base V8 FB/F2/F5 FC/F3/F4 FH FA/FW
327ci Low Compression FN -- -- FM
327ci Taxi/Police FZ/F6 GA/F7 GB/F8 FG/FY*
350ci/250HP L65 HL HM HJ HI
350ci L65 Police IM IN IP IL
350ci/265HP LM1 HU HV IA HT
350ci LM1 Police IX IY IZ IW
350ci/300HP L48 HK HN HH/IB? HG
350ci L48 Police IS IT IV IR
TH400 Manual
--------- --------
396ci/265HP L66 J2 (P/G) JQ JN
396ci Police JO JP
427ci/335HP LS1 LE LB
427ci LS1 Police LJ LK
427ci/390HP L36 LC LA
427ci L36 SS427 (Z24) LI LH
427ci L36 Police LF LG
427ci/427HP L72 LS LD
327 suffix codes with a letter and number indicate usage of a revised distributor.
FG Police only. FY Taxi only.
Engine Codes Reserved for Use With MA6 Heavy-Duty Clutch
(none known to have been produced):
L48 - HO, IQ. L66 - JT, JR. LS1 - MA, LY. L36 - MB, MC, LZ. L72 - MD
|
PowerGlide TH350 3 speed
------------ ------------ -----------
250ci/155HP base L6 CCG CCH? CCI
250ci Taxi/Police CCM CCK CCL
PowerGlide TH350 Manual
------------- ----------- -----------
350ci/250HP L65 CNU CNV CNO
350ci Police CNW CNX ???
350ci Low Compression CNZ --- CNY
350ci/300HP L48 CNQ CNR ---
350ci Police CNS CNT CNP
400ci/265HP LF6 --- CGR ---
TH400
---------
454ci/345HP LS4 CGV
454ci Police CGS
454ci/390HP LS5 CGU
454ci Police CGT
|
Block Casting Number
Here are the engine block casting numbers used for small blocks and big blocks. The casting date on the L6 block is on the right side. It is located on the rear, top left (driver’s side) for all others. Casting numbers could be used for multiple engine displacements during the same model year. The same block could appear in both 2-bolt and 4-bolt main configurations, depending on application. Multiple casting numbers were sometimes used for the same application in a model year.
| Bore | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | |
|---|---|---|---|---|---|---|---|---|
| L6 | 3.875″ | – | – | – | 3877178 3921968 |
3921968 | 3921968 | – |
| 283 | 3.875″ | 3834810 3849852 |
3834810 3849852 |
3849852 | 3896944 | – | – | – |
| 307 | 3.875″ | – | – | – | – | 3914636 3914638 |
– | – |
| 327 | 4.0″ | 3782870 | 3782870 3858180 |
3858180 | 3892657 3903352 |
3914660 3914678 |
3932386 3932388 3956618 3970010 |
– |
| 350 | 4.0″ | – | – | – | – | – | 3970010 | |
| 396 | 4.094″ | – | 3855961 3855962 |
3855961 | 3902406 3916323 |
3916323 3935440 |
3935440 3955272 |
– |
| 400 | 4.125″ | – | – | – | – | – | – | 3951509 3951511 |
| 409 | 4.3125″ | 3844422 | 3844422 * 3857656 |
– | – | – | – | – |
| 427 & 454 | 4.251″ | – | – | 3869942 | 3904351 | 3916321 3935439 |
3935439 3955270 3963512 |
3963512 |
| * – see note below | ||||||||
- A 3844422 block has been found from a early 65 409/400 motor stamped with the JA engine suffix and Wilmington, DE partial vin.
Block Casting Date
The block casting date was either cast on the top, back of the block or on the passenger’s side between the freeze plugs. The 64 and 65 409 blocks, used a date code that stated the day of the year the block was cast. For example, 365 would be the last day of the year, December 31st and 1 would be January 1st. It is located on the top, rear of the block on the passenger’s side.
All other blocks used a Month, Day, Year format. The letter is the month the block was cast. A is January, B February, C March, I September, L December. etc. That is followed by the day of the month it was cast and the year. E 13 5 would be May 13th, 1965. On small blocks, the casting date was located next to the casting number. On big blocks, it was located between the freeze plugs on the passenger’s side.
The casting date is usually less than 30 days before the engine assembly date. However, some can be several months earlier or longer. Those cases are rare.
The transmission code consisted of the type of transmission and the date it was assembled. The different kinds of codes used will be detailed below. Pretty much all transmissions used the same format for the code except the Turbo 400.
For all transmissions except the TH400, these are the transmission type codes used.
Powerglide and TH350 code location. Passenger’s side of the transmission oil pan.
Automatic
C: Cleveland Powerglide
T: Toledo Powerglide
E: McKinnon Powerglide
B: Cleveland TH350
Y: Toledo TH350
Manual
S: Saginaw 3-speed
K: McKinnon 3-speed
Saginaw 3-speed and 4-speed code location. Driver’s side of case below side cover.
P: Muncie 4-speed
R: Saginaw 4-speed
W: H.D. Warner 3-speed
H: H.D. Muncie 3-speed (69 only)
Examples for 1964-1966 transmission code format:
C1210 Cleveland Powerglide assembled on December 10th
P0301 Muncie 4-speed assembled on March 1st
1964 Muncie 4-speed code location. Driver’s side of main case on machined surface for side cover, bottom right. Note: Partial VIN number from Janesville, WI plant.
Starting in 1967, the transmission code date format changed. Following the transmission type, was the model year, month and day of the month. The letters used for the month were not the same exact as those used in the engine casting date.
A – Jan, B – Feb, C – Mar, D – Apr, E – May, H – June, K – July,
M – Aug, P – Sep, R – Oct, S – Nov, T – Dec.
Examples for 1967-1970 transmission date code format:
Y9E10 1969 Toledo TH350 assembled on May 10th
P8T03 1968 Muncie 4-speed assembled on December 3rd
1965 and up Muncie 4-speed code location. Passenger’s side, rear edge of the main case.
Turbo 400 transmission code format
The Turbo 400 automatic transmission has the application and date codes stamped on a metal tag riveted to the passenger’s side of the transmission case. The tag has several codes on it, which consisted of the full transmission code with Julian date code, application code, model year and serial number of the transmission. This full transmission code will be found on your Protect-O-Plate if it still with your car. The actual application code that would be found on the broadcast sheet and that is also on the tag starts with a C for Chevrolet but the C is omitted in the transmission code. For example, the application code may be CB but in the transmission code itself, only a B will be used.
The following is a list of TH400 application codes used only on the full-size Chevrolets.
CA 396 engine (also 350 engine in 1969)
CB 427 engine (L36)
CD 327 engine
CF 427 engine (LS1 with 2.29:1 axle)
CG 396 engine (with 2.29:1 axle)
CH 427 engine (L36 with 2.29:1 axle)
CM 307 engine
CQ 427 engine (LS1)
CY 427 engine (L72)
The Julian date in the transmission code started at 1 for January 1st of the start of that model year and continued past 365 until the end of production. For example, transmissions built early in the model year in August and September would have a date code in the 200’s where as those built after January 1st would start from 366. Transmissions assembled in July would have a date in the 500’s.
67A509 67 TH400 for use with 396 engine, assembled on May 24th
69B350 69 TH400 for use with 427 (L36) engine assembled on December 16th
The rear axle is final component of the drivetrain to be covered on this page. What can be found on the axle housing is the stamped axle code with assembly date, housing casting number and date housing was cast. In 1964, the axle code was stamped on the front, right side of the differential carrier housing. Starting in 1965, the axle code and date are stamped on the front of the axle tube on the passenger’s side. The casting number is located on the front of the carrier on the bottom right corner. The casting date is on the rear of the carrier, towards the top on the driver’s side. The rear axle casting date uses the fame format as the engine casting date.
The assembly code consists of the application code, assembly date and assembly plant. Axles were assembled at either Buffalo (code B) or Detroit Gear and Axle (code G). One exception was in 1964 when the first letter of the application code was the plant. (A – Detroit, B – Buffalo). On positraction axles, a letter for manufacturer of the posi unit will appear under the assembly code. It will be a D for Dana, E for Eaton or W for Warner.
Sample 1964 axle code: AB1202
BB 3.36 non posi assembled at Detroit
1202 assembled December 2nd
A sample 1965-1969 rear axle code would look like DH1020B which decodes to the following:
DH: 3.31 12 bolt rear axle with positraction
1020: Assembled October 20th
B: Buffalo axle plant
The following will be a table of application codes for the axles used in the full-size Chevrolets. Prior to the 10 bolt/12 bolt rear axles that came out in 1965, the axle housing was the same for all ratios. The gear set was installed in a carrier, also referred to as a “pumpkin” that could removed from the front side of the axle assembly as a complete unit. It was possible to change gear sets simply by swapping the pumpkin. The carrier assembly came in both positraction and non-positraction versions. SW is station wagon.
| 1964 | ||||
|---|---|---|---|---|
| Code | Ratio | Type | Other | |
| AA BA | 3.55 | N | ||
| AB BB | 3.36 | N | ||
| AC BC | 3.70 | N | Overdrive | |
| AD BD | 3.36 | N | Taxi | |
| AE | 3.55 | N | J65 | |
| AF | 3.70 | N | J65 | |
| AG | 3.36 | N | J65 | |
| AH BH | 3.70 | Y | ||
| AJ | 3.08 | N | J65 | |
| AK BK | 3.55 | Y | ||
| AL | 4.11 | N | ||
| AM BM | 3.36 | Y | ||
| AN | 3.55 | Y | J65 | |
| AP | 3.70 | Y | J65 | |
| AQ | 3.36 | Y | J65 | |
| AR | 3.08 | Y | J65 | |
| AS | 4.56 | Y | ||
| AT | 4.11 | Y | J65 | |
| AU | 4.56 | Y | J65 | |
| AV | 3.08 | N | J65, HD Chassis | |
| AW BW | 3.08 | N | ||
| AX BX | 3.08 | Y | ||
| AY | 3.36 | N | J65, HD Chassis | |
| AZ | 3.55 | N | J65, HD Chassis | |
| 1965 | 1966 | 1967 | 1968 | 1969 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Code | Ratio | Size | Type | Other | Ratio | Size | Type | Other | Ratio | Size | Type | Other | Ratio | Size | Type | Other | Ratio | Size | Type | Other |
| DA | 3.08 | 10 | N | 3.08 | 10 | N | 3.08 | 10 | N | 3.08 | 10 | N | 3.08 | 10 | N | |||||
| DB | 3.36 | 10 | N | 3.36 | 10 | N | 3.36 | 10 | N | 3.36 | 10 | N | 3.36 | 10 | N | |||||
| DC | 3.55 | 12 | N | 3.55 | 12 | N | 3.55 | 12 | N | 3.55 | 12 | N | 3.55 | 12 | N | |||||
| DD | 3.31 | 12 | N | 3.31 | 12 | N | 3.31 | 12 | N | 3.31 | 12 | N | 3.31 | 12 | N | |||||
| DE | 3.31 | 12 | N | H.D. Chassis | 3.31 | 12 | N | H.D. Chassis | 3.31 | 12 | N | H.D. Chassis | 3.31 | 12 | N | H.D. Chassis | 3.31 | 12 | N | H.D. Chassis |
| DF | 3.07 | 12 | P | 3.07 | 12 | P | 3.07 | 12 | P | 3.07 | 12 | P | 3.07 | 12 | P | |||||
| DG | 3.08 | 10 | P | 3.08 | 10 | P | 3.08 | 10 | P | 3.08 | 10 | P | 3.08 | 10 | P | |||||
| DH | 3.31 | 12 | P | 3.31 | 12 | P | 3.31 | 12 | P | 3.31 | 12 | P | 3.31 | 12 | P | |||||
| DI | 3.36 | 10 | P | 3.36 | 10 | P | 3.36 | 10 | P | 3.36 | 10 | P | 3.36 | 10 | P | |||||
| DJ | 3.55 | 10 | P | 3.55 | 10 | P | 3.36 | 10 | P | 3.36 | 10 | P | 3.36 | 10 | P | |||||
| DK | 3.55 | 12 | P | 3.55 | 12 | P | 3.55 | 12 | P | 3.55 | 12 | P | 3.55 | 12 | P | |||||
| DL | 3.70 | 10 | P | 3.70 | 10 | P | 3.70 | 10 | P | 3.70 | 10 | P | 3.70 | 10 | P | |||||
| DM | 3.73 | 12 | P | 3.73 | 12 | P | 3.73 | 12 | P | 3.73 | 12 | P | 3.73 | 12 | P | |||||
| DN | 4.10 | 12 | P | 4.10 | 12 | P | 4.10 | 12 | P | 4.10 | 12 | P | 4.10 | 12 | P | |||||
| DO | 4.56 | 12 | P | 4.56 | 12 | P | 4.56 | 12 | P | 4.56 | 12 | P | 4.56 | 12 | P | |||||
| DP | 4.88 | 12 | P | 4.88 | 12 | P | 4.88 | 12 | P | 4.88 | 12 | P | 4.88 | 12 | P | |||||
| DQ | 3.55 | 10 | N | 3.55 | 10 | N | 3.55 | 10 | N | 3.55 | 10 | N | 3.55 | 10 | N | |||||
| DR | 3.07 | 12 | N | J65 | 3.07 | 12 | N | J65 | 3.07 | 12 | N | J65 | ||||||||
| DS | 3.07 | 12 | P | J65 | 3.07 | 12 | P | J65 | 3.07 | 12 | P | J65 | 2.56 | 12 | N | |||||
| DT | 3.08 | 10 | N | J65 | 3.08 | 10 | N | J65 | 2.56 | 12 | P | |||||||||
| DU | 3.08 | 10 | P | J65 | 3.08 | 10 | P | J65 | 2.73 | 12 | N | |||||||||
| DV | 3.31 | 12 | N | J65 | 3.31 | 12 | N | J65 | 3.31 | 12 | N | J65 | 2.73 | 12 | P | |||||
| DW | 3.31 | 12 | P | J65 | 3.31 | 12 | P | J65 | 3.31 | 12 | P | J65 | 3.08 | 10 | N | |||||
| DX | 3.36 | 10 | N | J65 | 3.36 | 10 | N | J65 | 2.73 | 10 | P | 2.73 | 10 | P | ||||||
| DY | 3.36 | 10 | P | J65 | 3.36 | 10 | P | J65 | 2.73 | 10 | P | 2.73 | 10 | P | ||||||
| DZ | 3.55 | 10 | N | J65 | 3.55 | 10 | N | J65 | 2.73 | 10 | N | 2.73 | 10 | N | ||||||
| EA | 3.55 | 10 | P | J65 | 3.55 | 10 | P | J65 | 2.56 | 12 | N | |||||||||
| EB | 3.55 | 12 | N | J65 | 3.55 | 12 | N | J65 | 3.55 | 12 | N | J65 | 2.29 | 10 | N | |||||
| EC | 3.55 | 12 | P | J65 | 3.55 | 12 | P | J65 | 3.55 | 12 | P | J65 | 2.29 | 10 | P | |||||
| ED | 3.70 | 10 | N | J65 | 3.70 | 10 | N | J65 | 2.56 | 12 | P | |||||||||
| EE | 3.70 | 10 | P | J65 | 3.70 | 10 | P | J65 | ||||||||||||
| EF | 3.73 | 12 | N | J65 | 3.73 | 12 | N | J65 | 3:73 | 12 | N | J65 | 2.56 | 10? | N | |||||
| EG | 3.73 | 12 | P | J65 | 3.73 | 12 | P | J65 | 3:73 | 12 | P | J65 | 2.56 | 10? | P | |||||
| EH | 4.10 | 12 | P | J65 | 4.10 | 12 | P | J65 | 4.10 | 12 | P | J65 | 3.08 | 10 | P | |||||
| EI | 4.56 | 12 | P | J65 | 4.56 | 12 | P | J65 | 4.56 | 12 | P | J65 | 3.36 | 10 | N | |||||
| EJ | 4.88 | 12 | P | J65 | 4.88 | 12 | P | J65 | 4.88 | 12 | P | J65 | 3.36 | 10 | P | |||||
| EK | 3.70 | 10 | N | Overdrive | 3.70 | 10 | N | Overdrive | 3:70 | 10 | N | Overdrive | 3.70 | 10 | N | Overdrive | ||||
| EL | 3.73 | 12 | N | Overdrive | 3.73 | 12 | N | Overdrive | 3:73 | 12 | N | Overdrive | 3.73 | 12 | N | Overdrive | 3.73 | 12 | N | |
| EM | 3.07 | 12 | N | 3.07 | 12 | N | 3:07 | 12 | N | 3.07 | 12 | N | 3.07 | 12 | N | F40 | ||||
| EN | 3.07 | 12 | N | L30&M35 | 3.07 | 12 | N | 327&M35 | 3:07 | 12 | N | 327&M35 | 3.07 | 12 | N | 3.07 | 12 | N | Police | |
| EO | 3.55 | 12 | N | H.D. Chassis | 3.55 | 12 | N | H.D. Chassis | 3:07 | 12 | N | H.D. Chassis | 3.55 | 12 | N | 3.55 | 12 | N | ||
| EP | 2.73 | 12 | N | M40 | 2.73 | 12 | N | M40 | 2.73 | 12 | N | M40 | 2.73 | 12 | N | |||||
| EQ | 2.73 | 12 | P | 2.73 | 12 | P | 2.73 | 12 | P | 2.73 | 12 | P | ||||||||
| ER | 2.73 | 12 | N | J65 | 2.73 | 12 | N | J65&M40 | 2.73 | 12 | N | J65 | 3.55 | ? | N | |||||
| ES | 2.73 | 12 | P | J65 | 2.73 | 12 | P | J65&M40 | 2.73 | 12 | P | J65 | ||||||||
| ET | 2.73 | ? | ? | L30/M40 | ||||||||||||||||
| EU | 3.36 | 10 | N | 327, 4 link | 3.36 | 10 | N | 327, 4 link | 3.36 | 10 | N | 327, 4 link | 3.36 | 10 | N | 4 link | ||||
| EW | 3.70 | 10 | P | SW&J65, 4 link | ||||||||||||||||
| EX | 3.70 | 10 | N | SW w/OD, 4 link | 3.70 | 10 | N | OD, 4 link | 3.70 | 10 | N | |||||||||
| EY | 3.70 | 10 | P | 4 link | 3.70 | 10 | P | 4 link | 3.70 | 10 | P | 4 link | ||||||||
| EZ | 3.70 | 10 | N | J65, 4 link | 3.70 | 10 | N | J65, 4 link | 2.73 | 10 | N | 2.73 | 10 | N | ||||||
| FD | 2.29 | 12 | N | |||||||||||||||||
| FE | 2.29 | 12 | P | |||||||||||||||||
| FF | 3.55 | ? | P | |||||||||||||||||
| FS | ? | ? | ? | 327/M38 | ||||||||||||||||
| FT | 2.56 | 10 | N | 2.56 | 10 | N | ||||||||||||||
| FU | 2.56 | 10? | P | 2.56 | 10? | P | ||||||||||||||
| FV | 2.56 | 12 | P | 2.56 | 12 | P | ||||||||||||||
| FW | 2.56 | 12 | N | 2.56 | 12 | N | ||||||||||||||
| FX | 2.56 | 12 | P | 2.56 | 12 | P | ||||||||||||||
| GA | 3.07 | 12 | N | M40&C60 | 3:07 | 12 | N | 3.07 | 12 | N | ||||||||||
| GB | 2.73 | 12 | N | J65 | ||||||||||||||||
| GC | 2.73 | 12 | P | J65 | ||||||||||||||||
| GD | 3.07 | 12 | N | Taxi | ||||||||||||||||
| GE | 3.31 | 12 | N | Taxi | ||||||||||||||||
| GF | 3.07 | 12 | P | M40 | 3.07 | 12 | P | 3.07 | 12 | P | ||||||||||
| GG | 3.07 | 12 | P | J65&M40 | 3.07 | 12 | P | J65 | ||||||||||||
| GH | 3.31 | 12 | P | HD Brakes | 3.31 | 12 | P | HD Brakes | ||||||||||||
| GI | 12 | 3.31 | N | M40&C60 | 3.31 | 12 | N | 3.31 | 12 | N | ||||||||||
| GJ | 3.31 | 12 | P | 3.31 | 12 | P | 3.31 | 12 | P | |||||||||||
| GK | 2.73 | 12 | N | 2.73 | 12 | N | 2.73 | 12 | N | |||||||||||
| GL | 3.07 | 12 | N | J65 | 3.07 | 12 | N | J65 | ||||||||||||
| GM | 2.73 | 12 | P | 2.73 | 12 | P | 2.73 | 12 | P | |||||||||||
| GN | 3.31 | 12 | N | J65 | 3.31 | 12 | N | J65 | ||||||||||||
| GO | 3.31 | 12 | P | J65 | 3.31 | 12 | P | J65 | ||||||||||||
| GP | 3.55 | 10 | N | 3.55 | 10 | N | 3.55 | 10 | N | 3.55 | 10 | N | ||||||||
| GQ | 3.08 | 10 | N | L30&M35, 4 link | 3.08 | 10 | N | 4 link | 3.08 | 10 | N | 4 link | 3.08 | 10 | N | 4 link | ||||
| GR | 3.08 | 10 | P | 4 link | 3.08 | 10 | P | 4 link | 3.08 | 10 | P | 4 link | 3.08 | 10 | P | 4 link | ||||
| GS | 3.08 | 10 | N | J65, 4 link | 3.07 | 12 | N | 3.07 | 12 | N | ||||||||||
| GT | 3.08 | 10 | P | J65, 4 link | 3.07 | 12 | P | HD Brakes | 3.07 | 12 | P | HD Brakes | ||||||||
| GU | 3.36 | 10 | P | 4 link | 3.36 | 10 | P | 4 link | 3.36 | 10 | P | 4 link | 3.36 | 10 | P | 4 link | ||||
| GV | 3.36 | 10 | N | J65, 4 link | 3.36 | 10 | N | J65, 4 link | 3.55 | 12 | P | HD Brakes | 3.55 | 12 | P | |||||
| GW | 3.36 | 10 | P | J65, 4 link | 3.36 | 10 | P | J65, 4 link | 3.07 | 12 | P | HD Brakes | 3.07 | 12 | P | HD Brakes | ||||
| GX | 3.55 | 10 | P | SW, 4 link | 3.55 | 10 | P | 4 link | 3.55 | 10 | P | 4 link | 3.55 | 10 | P | 4 link | ||||
| GY | 3.55 | 10 | N | J65, 4 link | 3.55 | 10 | N | J65, 4 link | ||||||||||||
| GZ | 3.55 | 10 | P? | J65?, 4 link | 3.55 | 10 | P? | J65?, 4 link | ||||||||||||
| AAW | ?? | 12 | N | Police w/OD | ||||||||||||||||
| BBG | 3.07 | 12 | P | Police | ||||||||||||||||
| CCA | ?? | 12? | ? | Police? | ||||||||||||||||
| DDB | 3.?? | 12 | ? | Police | ||||||||||||||||
| DDS | ?? | 12 | ? | Police | ||||||||||||||||
1970 Rear Axle Codes
| 1970 | ||||
|---|---|---|---|---|
| Code | Ratio | Size | Type | Other |
| CDA | 3.08 | 10 | N | |
| CDC | 3.55 | 12 | N | |
| CDD | 3.31 | 12 | N | |
| CDE | 3.31 | 12 | N | |
| CDF | 3.07 | 12 | P | |
| CDG | 3.08 | 10 | P | |
| CDH | 3.31 | 12 | P | |
| CDK | 3.55 | 12 | P | |
| CDR | 2.73 | 12 | P | Heavy Duty, Police? |
| CDX | 2.73 | 10 | P | |
| CDZ | 2.73 | 10 | N | |
| CEA | 2.56 | 10 | N | |
| CEC | 2.29 | 12 | N | |
| CED | 2.56 | 10 | P | |
| CEK | 2.73 | 12 | N | Heavy Duty, Police? |
| CEM | 3.07 | 12 | N | |
| CEN | 3.07 | 12 | N | |
| CES | 3.08 | 10 | N | Heavy Duty |
| CET | 3.08 | 10 | P | |
| CEU | 3.36 | 10 | N | |
| CEV | 3.36 | 10 | P | Heavy Duty |
| CEW | 3.36 | 10 | P | |
| CEZ | 2.73 | 10 | N | |
| CE3 | 2.73 | 10 | N | |
| CFW | 2.56 | 12 | N | |
| CFX | 2.56 | 12? | P | |
| CGH | 3.31 | 12 | P | |
| CGK | 2.73 | 12 | N | |
| CGM | 2.73 | 12 | P | |
| CGQ | 3.08 | 10 | N | |
| CGR | 3.08 | 10 | P | |
| CGU | 3.36 | 10 | P | |
| CGW | 3.07 | 12 | P | |
| CLJ | 2.56 | 10 | P | |
| CLK | 2.73 | 10 | P | |
| CLN | 3.07 | 12 | P | |
| CMY | 2.56 | 12 | N | |
| CNA | 2.73 | 10 | N | |
| CND | 3.07 | 12 | N | |
| CWK | 3.07 | 12 | N | |
| CWO | 2.29 | 12 | N | |
| CWP | 3.07 | 12 | P | |
| CWT | 3.31 | 12 | P | Heavy Duty, Police? |
| CWU | 3.31 | 12 | P | |
| CWY | 3.31 | 12 | N | |
| CWZ | 3.31 | 12 | P | |
| CXA | 3.55 | 12? | N | |
| CXB | 3.55 | 12? | P | |
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