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ENGINE CODES

 

AMERICAN MOTORS

1965-66 1                         Code Prefix
1965-69  2                         Code Prefix
6-199 8.5:1 J
6-232 8.5:1 L
6-196 Side valves A
6-196 Overhead valves C
   
   
1966-69  4
V8-290 4 Bar Carb H
V8-343 2 Bar Carb S
V8-343 4 Bar Carb Z
V8-390 2 Bar Carb,1968 W 6
V8-390 4 Bar Carb, X 6
1970   2                     
6-199 A
6-232 1 Bar.Carb. E
6-232 2 Bar.Carb. G
1970-74  5
V8-304 H
V8-360 2 Bar Carb N
V8-360 4 Bar Carb P
V8-390 X
V8-401 Z
   
   
1975  3,5
6-232 E
6-258 1 Bar Carb A
6-258 2 Bar Carb C
V8-304 H
V8-360 2 Bar Carb N
V8-360 4 Bar Carb P
   
1971-74  3

                      
6-232 E
6-258 A
V8-287 3 3/4" Bore, 8.7:1 G
V8-327 4" Bore, 8.7:1 E
V8-327 4" Bore, 9.7:1 F
 
Location:
1- 6-196  Located on machined surface, upper left corner of
 engine block

2- 1965-70  Located on machined surface adjacent the 
distributor.

3-  232 & 258 Located on pad between #2 and #3
 cylinders. 287 & 327 tag attached alternator mounting
bracket.
 
4- 1966-69 Located on plate attached to front right-hand
rocker arm cover.

5- 1970-75 Located on plate attached to right bank
rocker arm cover.

6- "W" denote 4 Bar. Carb 1969, "X" 1968

The engine codes decoder reveals the engine displacement, plate location and configuration.