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ENGINE CODES
 
1970-75
 

CHEVELLE * MONTE CARLO
1964
Code Prefix
1964
Code Prefix
6-194
Std. trans
 G 6-230
P/G
 BL
6-194
HDC
 GB 6-230
P/G, P/V, A/C
 BP
6-194
Std. trans, P/V
 GF 6-230
3 sp. tran, A/C
 LL
6-194
HDC, P/V
 GG 6-230
3 sp. tran, P/V
 LM
6-194
Std. trans
 GH 8-283
3 sp. tran
 J
6-194
Std. trans, P/V
 GJ 8-283
4 sp. tran
 JA
6-194
Std. trans, A/C
 GK 8-283
P/G
 JD
6-194
HDC, A/C
 GL 8-283
4 Bar carb, P/G
 JG
6-194
Std. trans, A/C, P/V
 GM 8-283
4 Bar carb
 JH
6-194
HDC, A/C
 GN 8-327
Std. tran
 JQ
6-194
P/G
 K 8-327
Std. tran, HPE
 JR
6-194
P/G, P/V
 KB 8-327
Std. tran, SHPE
 JS
6-194
P/G
 KC 8-327
Std. tran, T/I
 JT
6-194
P/G, P/V
 KD 8-327
P/G
 SR
6-194
P/G, A/C
 KH 8-327
P/G, HPE
 SS
6-194
P/G, A/C, P/V
 KJ    
       
1964-66
1965-66
6-230
P/G, P/V, A/C
 BN 6-194
Std. trans
 AA
    6-194
HDC
 AC
1965-66
 6-194
A/C
 AG
6-194
P/G, Taxi
 AN 6-194
A/C, HDC
 AH
6-194
A/C, P/G
 AR 6-194
Taxi
 AK
6-230
P/G, P/V
 BN 6-194
P/G
 AL
6-230
A/C, M/T
 CB    
8-283
P/G
 DF    
       
1965-67
1966
6-230
M/T
 CA 6-194
A.I.R
 AS
6-230
P/G
 CC 6-194
A.I.R, A/C
 AT
6-230
A/C, P/G
 CD 6-194
A.I.R, A/C, HDC
 AU
8-283
3 sp tran
 DA 6-194
A.I.R, Taxi
 AV
8-283
4 sp tran
 DB 6-194
A.I.R, HDC
 AW
    6-194
P/G, A.I.R
 AX
1966-67
 6-194
A.I.R, A/C, P/G
 AY
6-230
A.I.R, P/G
 BL 6-194
A.I.R, P/G, Taxi
 AZ
6-230
A.I.R, A/C, P/G
 BM 8-327
HPE
 EB
6-230
A.I.R, A/C
 BO 8-327
SHPE
 EC
8-283
A.I.R
 DI 8-396
T/I
 ED
8-283
A.I.R, P/G
DJ 8-396
P/G, HPE
 EF
8-283
4 sp tran, A.I.R
 DK 8-396
A.I.R, HPE
 EJ
8-396
A.I.R
 EH 8-396
A.I.R, HPE, P/G
 EN
8-396
A.I.R, P/G
 EM    
       
1966-68
1967
8-327
M/T
 EA 6-230
A.I.R
 BN
8-327
P/G
 EE 6-230
A/C
 CB
8-396
SHPE
 EG 6-250
A.I.R
 CO
8-396
P/G
 EK 6-250
A.I.R, A/C
 CP
8-396
HPE, P/G
 EL 6-250
A.I.R, P/G
 CS
    6-250
A.I.R, A/C, P/G
 CT
1967-68
 8-283
HDC
 DN
6-230
A/C, HDC
 BB 8-327
4 Bar carb
 EA
6-230
HDC
 BC 8-327
A.I.R
 EB
6-250
3 sp tran
 CM 8-327
A.I.R, P/G
 EC
6-250
A/C
 CN 8-327
HDC
 EQ
6-250
P/G
 CQ 8-327
A.I.R, SHPE
 ER
6-250
A/C, P/G
 CR 8-396
M/T, P/G
 ED
8-327
SHPE
 EP    
8-327
HDC, SHPE
ES    
       
1968
1969
6-230
M/T
 BA 6-230
T/H
 AD
6-230
A/C
 BD 6-230
M/T
 AM
6-230
P/G
 BF 6-230
T/D, P/G
 AN
6-230
A/C, P/G
 BH 6-230
A/C
 AP
8-307
M/T
 DA 6-230
A/C, T/D, P/G
 AQ
8-307
4 sp. tran
 DB 6-230
A/C, T/H
 AR
8-307
P/G
 DE 6-250
T/D, P/G
 BB
8-307
HDC
 DN 6-250
A/C, T/D, P/G
 BC
8-327
4 Bar carb
 EH 6-250
T/H
 BD
8-327
4 Bar carb, P/G
 EI 6-250
M/T
 BE
8-327
4 Bar carb, HDC
 EJ 6-250
A/C
 BF
8-327
HDC
 EO 6-250
A/C, T/H
 BH
8-396
M/T
 ED 8-307
M/T
 DA
8-396
HPE
 EF 8-307
P/G
 DC
8-396
T/H
 ET 8-307
T/H
 DD
8-396
T/H, HPE
 EU 8-307
4 sp. tran
 DE
    8-350
M/T
 HA
  8-350
T/H
 HB
8-350
2 Bar carb
 HC
8-350
2 Bar carb, T/H
 HD
8-350
P/G
 HE
8-350
2 Bar carb, P/G
 HF
8-396
M/T
 JA
8-396
HPE
 JC
8-396
SHPE
 JD
8-396
HPE, T/H
 JE
8-396
T/H
 JK
   
   

Location:

4 & 6 CYL- Righthand side of block, rear of distributor

8 CYL - Front pad on righthand side of block

Configuration:

A/C - Air conditioning

O/D - Overdrive

A/H - Aluminum heads

P/G - Powerglide

A/S - Air spension

P/S - Power steering

A.I.R. - Air Injection Reactor

P/V - Positive crankcase ventilation

A/T - Auto trans

E.E.C - Exhaust emission control

SHPE - Special high perf. eng

F/I - fuel injection

S.S. - Super Sport

H/D - Heavy duty

T/D - Torque drive

HDC - Heavy duty clutch

T/H - Turbo hydramatic

HPE - High performance engine

H/L - Hydraulic lifters

T/I - Transistor ignition

M/T - Manual trans
 
The engine code decoder reveals the engine displacement, plate location and configuration.