PONTIAC
Cyl.
Engine
Bore		 Years
Comp.
Ratio		 NOTES: Part No.
Sizes		 Rings O.E. Assy.
No.		 O.E. Casting
No.		 Head
Shape
V6-173
2.8L
3.504(IN)
89(MM)

CHEVY
ENGINE
1987-89

8.9
EFI, J Body, 2.47" dia. head recess .27" deep.

APPROXIMATE HEAD VOLUME=20cc

Comp. Ht. 1.608
Pin Dia..9054 Offset
1492
STD.
0.5mm
.75mm
1.0mm
1.5mm
2-1.5mm
1-4.0mm

Shallow
Groove
14102688
14089254
V6-181
3.0L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1982-87

8.5
Flat Head.

Comp. Ht. 1.808
Pin Dia..9398 Offset
1734
STD.
.020
.030
.040
.060
2-5/64
1-3/16
25511557
25516698
25509349
25513034
V6-181
3.0L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1985-88

9.0
2.49" dia. head recess. .160" deep.

APPROXIMATE HEAD VOLUME=11cc

Comp. Ht. 1.805
Pin Dia..9398 Offset
1736
STD.
.020
.030
.040
.060
2-5/64
1-3/16
25522584
25521607
V6-191
3.1L
3.504(IN)
89(MM)

CHEVY
ENGINE
1988-95

8.8
2.88" dia. head recess .247" deep. For aluminum heads.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.450
Pin Dia..9054 Offset
1496
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm
10070183
10146881
10087662
10146880
V6-191
3.1L
3.504(IN)
89(MM)

CHEVY
ENGINE
1988-95

8.8
Coated skirt, 2.88" dia. head recess .247" deep. For aluminum heads.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.450
Pin Dia..9054 Offset
1496C
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm
10070183
10146881
10087662
10146880
V6-191
3.1L
3.504(IN)
89(MM)

CHEVY
ENGINE
1990-95

8.8
2.95" dia. head recess. .106" deep. For iron heads.

APPROXIMATE HEAD VOLUME=12cc

Comp. Ht. 1.450
Pin Dia..9055 Offset
1486
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm

Shallow
Groove
10070145
10087699
10070115-B
10118601
V6-191
3.1L
3.504(IN)
89(MM)

CHEVY
ENGINE
1990-95

8.8
Coated skirt, 2.95" dia. head recess. .106" deep. For iron heads.

APPROXIMATE HEAD VOLUME=12cc

Comp. Ht. 1.450
Pin Dia..9055 Offset
1486C
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm

Shallow
Groove
10070145
10087699
10070115-B
10118601
V6-204
3.3L
3.700(IN)
94(MM)

BUICK
ENGINE
1989-93

9.0
2.83" dia. head recess .123" deep.

APPROXIMATE HEAD VOLUME=11cc

Comp. Ht. 1.310
Pin Dia..9054 Offset
1743
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-3.0mm
25535356
24507065
25532084
V6-207
3.4L
3.622(IN)
92(MM)

CHEVY
ENGINE
1992-94

9.3
Grand Prix. Flat head with 4 valve reliefs. Used in either left or right bank.

Comp. Ht. 1.457
Pin Dia..9055 Offset
3409*
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm
10130903(L)
10130904(R)
10130958
V6-207
3.4L
3.622(IN)
92(MM)

CHEVY
ENGINE
1993-94
Firebird. 2.75" dia. head recess .080" deep.

Comp. Ht. 1.457
Pin Dia..9054 Offset
3420**
STD.
0.5mm
.75mm
1.0mm
2-1.5mm
1-4.0mm
10146858
10146832
* NEW PISTON, AVAILABLE NOW
**NEW PISTON, CHECK FOR AVAILABILITY
Page 79

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