OLDSMOBILE
Cyl.
Engine
Bore		 Years
Comp.
Ratio		 NOTES: Part No.
Sizes		 Rings O.E. Assy.
No.		 O.E. Casting
No.		 Head
Shape
V8-215
3.5L
3.500(IN)
88.9(MM)

BUICK
ENGINE
1961-63

9.6
2.68" dia. head recess by .091" deep. Higher comp. version of 1718. From Factory only.Z

APPROXIMATE HEAD VOLUME=8.5cc

Comp. Ht. 1.843
Pin Dia..8750 Offset
9598
STD.
.020
.030
.040
.060
2-5/64
1-3/16

V6-225
3.7L
3.750(IN)
95.25(MM)

BUICK
ENGINE
1964-65

8.3
3.06" dia. head recess .23" deep.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.835
Pin Dia..9398
1724
STD.
.020
.030
.040
.060
2-5/64
1-3/16
1399524
1357553
V6-231
3.8L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1975-87

7.6
8.0
8.5
Non-turbo. 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
1257377
22501423
25518053
25527178
1231899
1247241
125567
25516057
25522904
25519456
V6-231
3.8L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1975-87

7.7
8.1
8.6
Non-turbo, 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
1257377
22501423
25518053
25527178
1231899
1247241
1255672
25516057
25522904
25519456
v6-231
3.8L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1989-92

8.5
3.10" dia. head recess .25" deep; comp. hgt. destroked .020". VIN C, SFI "3800".

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)
96.5(MM)

BUICK
ENGINE
1993-94
Similar to 1738 except higher comp. hgt. and ring pack.

Comp. Ht. 1.446
Pin Dia..9054 Offset
1744**
STD.
.5mm
.75mm
1.0mm
1-1.2mm
1-1.5mm
1-3.0mm

Shallow
Groove
24502953
25530461
L6-250
4.1L
3.875(IN)
98.4(MM)

CHEVY
ENGINE
1966-76

8.3
3.00" dia. "D" head recess .060" deep.

APPROXIMATE HEAD VOLUME=7cc

Comp. Ht. 1.640
Pin Dia..9273 Offset
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
1982-84

8.0
3.913" dia. head recess .256" deep.

APPROXIMATE HEAD VOLUME=28cc

Comp. Ht. 1.808
Pin Dia..9398 Offset
1732
STD.
.020
.030
.040
.060
2-5/64
1-3/16
25505374
25501263
* NEW PISTON, AVAILABLE NOW
**NEW PISTON, CHECK FOR AVAILABILITY
Page 74

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