BUICK

Cyl.
Engine
Bore		 Years
Comp.
Ratio		 NOTES: Part No.
Sizes		 Rings O.E. Assy.
No.		 O.E. Casting
No.		 Head
Shape
V6 231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1975-87

7.6
8.0
8.5
Non-turbo, VIN A. 3.05" dia. head recess .215" deep.

APPROXIMATE HEAD VOLUME=24.5cc

Comp. Ht. 1.805
Pin Dia..9398 Offset
1731
Std.
.020
.030
.040
.060
2-5/64
1-3/16
1394558
1249538
12157377
25501423
25518053
25527178
1231899
1247241
1255672
25516057
25522904
25519456
V6 231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1975-87

8.5
Non-turbo, VIN A. Hypereutectic, destroked .020, 3.05" dia. head recess .235" deep.

APPROXIMATE HEAD VOLUME=25.5cc

Comp. Ht. 1.805
Pin Dia..9398 Offset
H1740
Std.
.020
.030
.040
.060
2-5/64
1-3/16
1394558
1249538
12157377
25501423
25518053
25527178
1231899
1247241
1255672
25516057
25522904
25519456
V6 231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1978-87

8.0
Turbo. 3.05" dia. head recess .245" deep.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.805
Pin Dia..9398 Offset
1735
Std.
.020
.030
.040
.060
2-5/64
1-3/16
25502381
25515840
25519444
25528265
25502339
25515094
25518433
25526298
V6 231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1988-93

8.5
Riviera, SFI, VIN C. 3.10" dia. head recess .25" deep. Destroked .020"

APPROXIMATE HEAD VOLUME=25.5cc

Comp. Ht. 1.366
Pin Dia..9054 Offset
1738
Std.
.5mm
.75mm
1.0mm
2-1.5mm
1-3.0mm
Shallow
Groove
25533087
24501072
25530461
V6 231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1993-94
VIN L. Similar to 1738 except higher Comp. Ht. and ring pack. Except supercharged. 3.10" dia. head recess .295" deep.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.443
Pin Dia..9054 Offset
1744*
Std.
.5mm
.75mm
1.0mm
1-1.2mm
1-1.5mm
1-3.0mm
Shallow
Groove
24502953
25530461
V6-231
3.8L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1995-98
Hypereutectic. Except supercharged. VIN K. 2.86" dia. head recess, .05" deep.

Comp. Ht. 1.090
Pin Dia..8662 Offset
H1745**
STD.
0.5mm
.75mm
1.0mm
1-1.2mm
1-1.5mm
1-2.0mm
12537408-9
23706D
V6-231
3.8L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1996-2000

9.2
Hypereutectic, Supercharged, VIN I. 2.73" dia. head recess, .167" deep. Destroked .010".

Comp. Ht. 1.197
Pin Dia..9054 Offset
H1747*
STD.
0.5mm
.75mm
1.0mm
1-1.2mm
1-1.5mm
1-2.0mm
12539085
23523E
L6 250
4.1L
3.875(IN)
98.4(MM)

CHEVY
ENGINE
1968-76

8.4
3.00" dia. head recess .060" deep.

APPROXIMATE HEAD VOLUME=7cc

Comp. Ht. 1.640
Pin Dia..9273
1446
Std.
.020
.030
.040
.060
2-5/64
1-3/16
3886040
3886048
6270033
3874468
3877604
6262805
V6 252
4.1L
3.965(IN)
100.7(MM)

BUICK
ENGINE
1980-84

8.0
All with 4.1 liter engine. 3.193" dia. head recess .256" deep.

APPROXIMATE HEAD VOLUME=28cc

Comp. Ht. 1.808
Pin Dia..9398
1732
Std.
.020
.030
.040
.060
2-5/64
1-3/16
25505374
25501263
V8 260
4.3L
3.500(IN)
88.9(MM)

OLDSMOBILE
ENGINE
1975-76

8.4
2.35" dia. head recess .165" deep.

APPROXIMATE HEAD VOLUME=11.5cc

Comp. Ht. 1.575
Pin Dia..9805
1634
Std.
.020
.030
.040
.060
2-5/64
1-3/16
231906
550136
* NEW PISTON, AVAILABLE NOW
**NEW PISTON, CHECK FOR AVAILABILITY

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