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ENGINE CODES

  
 

BUICK

1962                        Code Prefix
1963                        Code Prefix
V6-198 6I V6-198 JL
V8-215 Std. Eng. I V8-215 Std. Eng. JM
V8-215 Hi. Comp. HI V8-215 Hi. Comp. JN
V8-401 2 Bar Carb 2I V8-401 2 Bar Carb JR
V8-401 4 Bar Carb 4I V8-401 4 Bar Carb JT
     
1964                       
V6-225 KH
V8-300 Std. Tran KL
V8-300 Hi-Pref KP
V8-401 KT
V8-425 1 Carb kW
V8-425 2 Carbs KX
1965                        
V6-225 LH
V8-300 Std. Tran LL
V8-300 Hi-Pref LP
V8-400 LR
V8-401 LT
V8-401 Riviera LW
V8-425 LX
1966
V6-225 MH
V8-300 ML
V8-340 2 Bar Carb MA
V8-340 4 Bar Carb MB
V8-400 MR
V8-401 MT
V8-425 MW
1967
V6-225 NH
V8-300 NL
V8-340 2 Bar Carb NA
V8-340 4 Bar Carb NB
V8-400 NR
V8-430 MD 0R ND
   
   
1968
6-250 N/A
V8-350 2 Bar Carb PO
V8-350 4 Bar Carb PP
V8-400 PR
V8-430 PD

1970
6-250 N/A
V8-350 2 Bar Carb SO
V8-350 2 Bar Carb SB OR P
V8-455 SF OR R OR S
 
1972
V8-350 2 Bar Carb WC
V8-350 4 Bar Carb WB
V8-455 WF
V8-455 Stage I WS
V8-455 Riviera G.S. WA
   
   
1974

6-250 Auto trans CCW, CCX
6-250 Std. trans CCR
V8-350 2 Bar Carb ZC, ZP
V8-350 4 Bar Carb ZB, ZM
V8-455 2 Bar Carb ZI
V8-455 4 Bar Carb ZF, ZK
V8-455 Stage I ZA, ZS
   
Location:

V6-198 Stamped on front of crankcase below left cyl. Head

V6-225 ,V8-300 , 340 stamped right side of crankcase, 
between  middle branches of exhaust manifold.
1969
6-250 N/A
V8-350 2 Bar Carb RO
V8-350 4 Bar Carb RP
V8-400 RR
V8-430 RD
 
1971
6-250 N/A
V8-350 2 Bar Carb TC OR TO
V8-350 2 Bar Carb TB OR TP
V8-455 TA OR R OR S
   
1973
V8-350 2 Bar Carb XC
V8-350 4 Bar Carb XB
V8-455 XF
V8-455 Stage I XS
V8-455 Riviera G.S. XA
   
1975 *

V6-231 C
6-250 D
V8-260 F
V8-350 2 Bar Carb H
V8-350 4 Bar Carb J
V8-400 S
V8-455 T
68-74 V8 350, 400, 430, 455 located on the left bank cylinder head.

V8- 215, 400, 401, 425 is stamped upside down on 
front of cylinder block.

* Fifth digit in the vin code denotes engine used

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