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ENGINE CODES

 
 

OLDSMOBILE

 
1960
Code Prefix
1961
Code Prefix
3
8-371
240hp, 8.75:1, 2brl
C 8-215
155hp, 8.75:1, 2brl
S
8-371
7.9:1, 2brl
CE 8-215
185hp, 10.25:1, 4brl
S
Cutlass
8-371
260hp, 9.75:1, 4brl
CH 8-394
250hp, 8.5:1, 2brl
F
8-394
315hp, 9.75:1, 4brl
D 8-394
275hp, 10:1, 2brl
G
8-394
260hp, 7.8:1, 4brl
DE 8-394
325hp, 10:1, 4brl
G
    8-394
330hp, 10.25:1, 4brl
G
 
1962
3
1963
V8-215
155hp, 8.75:1, 2brl
S V8-215
155hp, 8.75:1, 2brl
S
V8-215
8.25:1, 2brl
SE V8-215
8.25:1, 2brl
SE
V8-215
185hp, 10.25:1, 4brl
SG V8-215
185hp, 10.25:1, 4brl, M/T
SG
V8-215
8.5:1, 4brl
SH V8-215
195hp, 10.75:1, 4brl, A/T
SG
V8-215
215hp, 10.25:1, T/C
ST V8-215
8.5:1, 4brl
SH
V8-350
330hp, 10.25:1, 4brl
G V8-215
215hp, 10.25:1, T/C
ST
V8-350
8.3:1, 4brl
GE V8-394
280hp, 10.25:1, 2brl
H
V8-350
345hp, 10.5:1, 4brl
GS V8-394
8.3:1, 2brl
HE
V8-394
280hp, 10.25:1, 2brl
F V8-394
260hp, 8.75:1, 2brl
HL
V8-394
8.3:1, 2brl
FE V8-394
330hp, 10.25:1, 4brl
J
V8-394
260hp, 10.25:1, 4brl
FL V8-394
8.3:1, 2brl
JE
  V8-394
345hp, 10.5:1, 2brl
JS
 
1964
4
1965
V6-225
155hp, 9:1, 1brl
KH V6-225
155hp, 9:1, 1brl
LH
V6-225
8.3:1, 1brl
KJ V6-225
7.6:1, 1brl
LJ
V8-330
230hp, 8.75:1, 2brl
T V8-330
250hp, 9:1, 2brl
T
V8-330
8.3:1, 2brl
TE V8-330
2brl
TE
V8-330
290hp, 10.25:1, 4brl
TG V8-330
315hp, 10.25:1, 4brl
TG
V8-330
8.3:1, 4brl
TH V8-330
8.3:1, 4brl
TH
V8-330
310hp, 10.25:1, 4brl
*
442
V8-330
260hp, 10.25:1, 2brl
U
V8-394
280hp, 10.25:1, 2brl
H V8-330
8.3:1, 2brl
UE
V8-394
8.3:1, 2brl
HE V8-330
315hp, 10.25:1, 4brl
UG
V8-394
260hp, 8.75:1, 2brl
HL V8-330
8.3:1, 4brl
UH
V8-394
330hp, 10.25:1, 4brl
J V8-400
345hp, 10.25:1, 4brl
V*
442
V8-394
8.3:1, 2brl
JE V8-425
310hp, 10.25:1, 2brl
M
V8-394
345hp, 10.5:1, 2brl
JS V8-425
8.3:1, 2brl
ME
  V8-425
300hp, 9:1, 2brl
ML
V8-425
360hp, 10.25:1, 4brl
N
V8-425
8.3:1, 4brl
NE
V8-425
370hp, 10.5:1, 4brl
NS
 
1966
1967
6-250
155hp, 8.5:1, 1brl, M/T
VA,VB,VC,VD 6-250
155hp, 8.5:1, 1brl
FVA,FVB,FVC,FVD
6-250
155hp, 8.5:1, 1brl, A/T
VE,VF,VG 6-250
155hp, 8.5:1, 1brl
FVE,FVF,FVG,FVH
6-250
7.25:1, 1brl, M/T
VJ 6-250
7.25:1, 1brl, M/T
VJ
6-250
7.25:1, 1brl, A/T
VK V8-330
260hp, 10.25:1, 2brl
W
V8-330
250hp, 9:1, 2brl
W V8-330
250hp, 9:1, 2brl
WE
V8-330
8.3:1, 2brl
WE V8-330
260hp, 10.25:1, 2brl
X
V8-330
320hp, 10.25:1, 4brl
WG V8-330
250hp, 9:1, 2brl
XE
V8-330
8.3:1, 4brl
WH V8-330
320hp, 10.25:1, 4brl
XG
V8-330
310hp, 9:1, 4brl
WL V8-350
320hp, 10.25:1, 4brl
WG
V8-330
260hp, 10:1, 2brl
X V8-350
320hp, 8.3:1, 4brl
WH
V8-330
8.3:1, 2brl
XE V8-400
300hp, 10.5:1, 2brl
V
V8-330
320hp, 10.25:1, 4brl
XG V8-400
350hp, 10.25:1, 4brl
VG
V8-330
8.3:1, 4brl
XH V8-400
360hp, 10.25:1, 3-2brl
*
V8-330
250hp, 9:1, 2brl
XL V8-425
310hp, 10.25:1, 2brl
P
V8-400
350hp, 10.25:1, 4brl
V V8-425
8.3:1, 2brl
PE
V8-400
360hp, 10.25:1, 3-2brl
V V8-425
300hp, 9:1, 2brl
PL
V8-425
310hp, 10.25:1, 2brl
M V8-425
365hp, 10.25:1, 4brl
R
V8-425
8.3:1, 2brl
ME V8-425
8.3:1, 4brl
RE
V8-425
300hp, 9:1, 2brl
ML V8-425
375hp, 10.5:1, 4brl
RS
V8-425
365hp, 10.25:1, 4brl
N V8-425
385hp, 10.5:1, 4brl
RT
Toronado
V8-425
8.3:1, 4brl
NE  
V8-425
375hp, 10.5:1, 4brl
NS
V8-425
385hp, 10.5:1, 4brl
NT
Toronado
 
1968
1969
6-250
155hp, 8.5:1, 1brl, M/T
VA,VB 6-250
155hp, 8.5:1, 1brl, M/T
VA,VB
6-250
155hp, 8.5:1, 1brl, A/T
VE,VF 6-250
7.25:1, 1brl, M/T
VD,VJ
V8-350
250hp, 9:1, 2brl, A/T
QA,QB 6-250
155hp, 8.5:1, 1brl, A/T
VE,VF
V8-350
250hp, 9:1, 2brl, M/T
QI,QJ 6-250
7.25:1, 1brl, A/T
VK,VL
V8-350
310hp, 10.25:1, 4brl, A/T
QN,QP V8-350
250hp, 9:1, 2brl, A/T
QA,QB
V8-350
310hp, 10.25:1, 4brl, M/T
QV,QX V8-350
250hp, 9:1, 2brl, M/T
QI
V8-350
250hp,9:1, 2brl, A/T
TB,TD V8-350
250hp, 9:1, 2brl, A/T
QJ
Cutlass
V8-350
250hp,9:1, 2brl, M/T
TL V8-350
310hp, 10.25:1, 4brl, A/T
QN,QP
V8-350
310hp,10.25:1, 4brl, A/T
TN V8-350
310hp, 10.25:1, 4brl, M/T
QV
V8-400
290hp,9:1, 2brl, A/T
QL V8-350
325hp, 10.5:1, 4brl, M/T
QX
W-31
V8-400
325hp, 10.5:1, 4brl, A/T
QR,QS,QT V8-350
250hp, 9:1, 2brl, A/T
TB,TC,TD
V8-400
350hp, 10.5:1, 4brl, M/T
QW,QU V8-350
250hp, 9:1, 2brl, M/T
TL
V8-400
360hp, 10.5:1, 4brl
*
W-30
V8-400
325hp, 10.25:1, 4brl, A/T
QR,QS
V8-455
320hp, 10.25:1, 4brl, A/T
UA,UB V8-400
360hp, 10.5:1, 4brl, A/T
QT
W-30
V8-455
310hp, 9:1, 2brl, A/T
UC,UD V8-400
360hp, 10.5:1, 4brl, M/T
QU
W-30
V8-455
310hp, 9:1, 2brl, M/T
UJ V8-400
350hp, 10.5:1, 4brl, M/T
QW
V8-455
365hp, 9:1, 4brl, A/T
UN,UO V8-455
310hp, 9:1, 2brl, A/T
UC,UD
V8-455
375hp, 10.25:1, 2brl, A/T
US,UT V8-455
310hp, 9:1, 2brl, M/T
UJ
V8-455
375hp, 10.25:1, 4brl, A/T
UV,UW V8-455
390hp, 10.25:1, 4brl, A/T
UL
V8-455
400hp, 10.25:1, 4brl, A/T
*
Toronado
V8-455
365hp, 10.25:1, 4brl, A/T
UN,UO
V8-455
390hp, 10.5:1, 4brl
Hurst/olds
V8-455
375hp, 10.25:1, 2brl, A/T
US,UT,UV
V8-455
400hp, 10.25:1, 4brl, A/T
UW
V8-455
380hp, 10.1:1, 4brl
Hurst/olds
 
1970
1971
6-250
155hp, 8.5:1, 1brl
VB,VF 6-250
145hp, 8:1, 1brl
VB,VF
V8-350
250hp, 9:1, 2brl
QA,QI,QJ 6-250
145hp, 8.5:1, 1brl
ZB,ZG
V8-350
250hp, 9:1, 2brl
TC,TD,TL V8-350
240hp, 8:5:1, 2brl, A/T
QA,QJ,TC,TD
V8-350
310hp,10.25:1, 4brl
QN,QP,QV V8-350
240hp, 8:5:1, 2brl, 4spd
QI,TE
V8-350
325hp,10.5:1, 4brl
QD,QX V8-350
260hp, 8:5:1, 4brl, A/T
QN,QP
V8-455
310hp, 9:1, 2brl
UC,UD,UJ V8-350
260hp, 8:5:1, 4brl, 4spd
QB,QO
V8-455
320hp, 10.25:1, 2brl
TX,TY V8-455
280hp, 8.5:1, 2brl, A/T
UC,UD,TY,TX
V8-455
365hp, 10.5:1, 4brl
TP,TQ,TU,TV V8-455
280hp, 8.5:1, 2brl, 4spd
UE
V8-455
365hp, 10.5:1, 4brl
TW,UN,UO V8-455
320hp, 8.5:1, 4brl, A/T
TA,TQ,TP
V8-455
370hp, 10.5:1, 4brl
TS,TT V8-455
320hp, 8.5:1, 4brl, A/T
TV,TW,UN,UO
V8-455
390hp, 10.25:1, 4brl
UL V8-455
320hp, 8.5:1, 4brl, 4spd
TU,TN
V8-455
375hp, 10.25:1, 4brl
US,UT V8-455
350hp, 8.5:1, 4brl, A/T
US,UT
V8-455
400hp, 10.25:1, 4brl
UV,UW V8-455
340hp, 8.5:1, 4brl, 4spd
TB,TS
  V8-455
340hp, 8.5:1, 4brl, A/T
TL,TT
 
1972
1973
V8-350
160hp, 8.5:1, 2brl, M/T
QA 6-250
100hp, 8.2:1, 1brl, A/T
CCA, CCB
V8-350
175hp, 8.5:1, 2brl, A/T
QB,QC,QN 6-250
100hp, 8.2:1, 1brl, M/T
CCC, CCD
V8-350
180hp, 8.5:1, 4brl, M/T
QD,QE V8-350
160hp, 8.5:1, 2brl, A/T
QN,QO,QP
V8-350
180hp, 8.5:1, 4brl, A/T
QJ,QK,QP V8-350
160hp, 8.5:1, 2brl, A/T
QQ,QS,QT
V8-350
200hp, 8.5:1, 4brl
  V8-350
180hp, 8.5:1, 4brl, A/T
QA,QB,QJ
V8-455
250hp, 8.5:1, 4brl
  V8-350
180hp, 8.5:1, 4brl, A/T
QK,QU,QV
V8-455
270hp, 8.5:1, 4brl, M/T
UD,UE V8-350
180hp, 8.5:1, 4brl, M/T
QC,QD,QE,QL
V8-455
270hp, 8.5:1, 4brl, A/T
UA,UB V8-455
225hp, 8.5:1, 4brl, A/T
UA,UB,US
V8-455
225hp, 8.5:1, 4brl, A/T
US,UT V8-455
225hp, 8.5:1, 4brl, A/T
UT,UU,UV
V8-455
265hp, 8.5:1, 4brl, A/T
UU,UV V8-455
225hp, 8.5:1, 4brl, M/T
UD
V8-455
300hp, 8.5:1, 4brl, M/T
UL,UN V8-455
250hp, 8.5:1, 4brl
 
V8-455
300hp, 8.5:1, 4brl, A/T
UO V8-455
270hp, 8.5:1, 4brl,M/T
 
1974
1975
6-250
100hp, 8.2:1, 1brl, M/T
CCA, CCB 6-250
105hp, 8.2:1, 1brl, M/T, 1
CJU
6-250
100hp, 8.2:1, 1brl, A/T
CCC, CCD 6-250
105hp, 8.2:1, 1brl, A/T, 1
CJT,CJL
V8-350
180hp, 8.5:1, 4brl, A/T
QB,QC,QL 6-231
110hp, 8:1, 2brl, M/T , 1
FP
V8-350
180hp, 8.5:1, 4brl, A/T
QO,QU,QW 6-231
110hp, 8:1, 2brl, A/T , 1
FR,FS
V8-350
180hp, 8.5:1, 4brl, M/T
TB,TC,TL,TO V8-260
110hp, 8.5:1, 2brl, M/T, 1
QA,QK
V8-350
200hp, 8.5:1, 4brl
  V8-260
110hp, 8.5:1, 2brl
QB,QC
V8-455
210hp, 8.5:1, 4brl, A/T
VA,VB,VC,VD V8-260
110hp, 8.5:1, 2brl, M/T A/C, 1
QD, QN
V8-455
210hp, 8.5:1, 4brl, A/T
VL,VO,VP,UA V8-260
110hp, 8.5:1, 2brl, M/T, 2
TA, TK
V8-455
210hp, 8.5:1, 4brl, A/T
UB,UC,UD,UL V8-260
110hp, 8.5:1, 2brl, M/T, A/C, 2
TD, TN
V8-455
210hp, 8.5:1, 4brl, A/T
UN,UP,UR V8-260
110hp, 8.5:1, 2brl,A/T, 1
QE, QP
V8-455
210hp, 8.5:1, 4brl, A/T
UO,UV,UX V8-260
110hp, 8.5:1, 2brl,A/T A/C, 1
QJ, QQ
V8-455
230hp, 8.5:1, 4brl
  V8-260
110hp, 8.5:1, 2brl,A/T, 2
TE, TP
V8-455
270hp, 8.5:1, 4brl
  V8-260
110hp, 8.5:1, 2brl,A/T, A/C, 2
TJ, TQ

1- Except CA

2- CA 1965 V6-225 - Right cyl block deck face.

3- 1961-62: no suffix code= Standard engine. E,H suffix= Export. H= hi comp L=low comp F85 series. G= 4brl

4- 1964: K=Year. H=Std comp. J=Low comp

1965-67 V8-330, 425 - machined pad at front of right cyl head.

1966-71 & 73 6-250 - Right side of block rear of the distributor.

1968-75 - Stamped on the oil fill tube.

1975 - Omega V8-350 on left blank cylinder head

T/C= Turbocharged

A/C- Air condition

A/T - Auto trans

M/T - Manual trans

 

V8-350
165hp, 8.0:1, 4brl
Q2,Q3,Q4
V8-350
165hp, 8.0:1, 4brl
Q5,PA,PB
V8-350
165hp, 8:1, 4brl, A/T, 1
RW,QL
V8-350
165hp, 8:1, 4brl, A/T, A/C, 1
RX, QO, QX
V8-350
165hp, 8.0:1, 4brl, A/T, 2
RN, TL
V8-350
165hp, 8:1, 4brl, A/T, A/C, 2
RO, TO, TX
V8-350
145hp, 8.1:1, 2brl
RS,RT
V8-350
170hp, 8.5:1, 4brl
 
V8-400
170hp, 8:1, 2brl
YH,YJ
V8-400
175hp, 8.5:1, 4brl
 
V8-400
190hp, 7.6:1, 4brl, A/T, 1
YM, YT
V8-455
190hp, 8.5:1, 4brl, A/T, 1
UB, UE, UP
V8-455
190hp, 8.5:1, 4brl, A/T, A/C, 1
UC, UD, UP
V8-455
190hp, 8.5:1, 4brl, A/T, 2
VB, VE, VP
V8-455
190hp, 8.5:1, 4brl, A/T, A/C, 2
VC, VD, VP
V8-455
215hp, 8.5:1, 4brl
 
 
 
The engine code decoder reveals the stamp location, engine displacement, horse power, compression ratio, and Carburetor configuration.