BUICK

Cyl.
Engine
Bore		 Years
Comp.
Ratio		 NOTES: Part No.
Sizes		 Rings O.E. Assy.
No.		 O.E. Casting
No.		 Head
Shape
V8 307
5.0 L
3.800(IN)
96.5(MM)

OLDSMOBILE
ENGINE
1980-84

7.9
2.70" dia. head recess .107" deep.

APPROXIMATE HEAD VOLUME=9cc

Comp. Ht. 1.595
Pin Dia..9805 offset
1636
Std.
.020
.030
.040
.060
2-5/64
1-3/16
22506658
22504964
V8 307
5.0 L
3.800(IN)
96.5(MM)

OLDSMOBILE
ENGINE
1985-90

8.0
Recessed head .270" deep. Broken sets factory only.

APPROXIMATE HEAD VOLUME=15.5cc

Comp. Ht. 1.605
Pin Dia..9805 Offset
1639LR
Std.
.020
.030
.040
.060
2-5/64
1-3/16
22527480(R)
22527479(L)
22527033
V8 340
5.6 L
3.750(IN)
95.25(MM)

BUICK
ENGINE
1966-67

8.4
3.06" dia. head recess .23" deep.

APPROXIMATE HEAD VOLUME=26cc

Comp. Ht. 1.835
Pin Dia..9398 Offset
1724
Std.
.020
.030
.040
.060
2-5/64
1-3/16
1395184
1374154
V8 350
5.7 L
3.800(IN)
96.52(MM)

BUICK
ENGINE
1968-81

8.7
8.6
8.0
8.4
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
1394208
1394558
1249538
22501423
25527178
1382128
1231899
1247241
1255672
25522904
25519456
V8 350
5.7 L
3.800(IN)
96.5(MM)

BUICK
ENGINE
1968-81

8.5
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
1249538
1394558
25501423
1394208
25527178
1247241
1231899
1255672
1382128
25522904
25519456
V8 350
5.7 L
4.000(IN)
101.6(MM)

CHEVY
ENGINE
1977-79

8.1
VIN L. 3.16" dia. head recess .08" deep 4 valve reliefs. Use 1986 & earlier rings only.

APPROXIMATE HEAD VOLUME=13cc

Comp. Ht. 1.540
Pin Dia..9273 Offset
1470
Std.
.020
.030
.040
.060
.080
2-5/64
1-3/16
6271097
3991488
10159424
6271096
3991476
10128212
V8 350
5.7 L
4.000(IN)
101.6(MM)

CHEVY
ENGINE
1977-79

7.9
Hypereutectic, destroked .020". 3.14" dia. head recess .07" deep with 4 valve reliefs. Use 1986 & earlier rings. NOT INTENDED FOR RACE APPLICATIONS.

APPROXIMATE HEAD VOLUME=12cc

Comp. Ht. 1.560
Pin Dia..9273 Offset
H1476
Std.
.020
.030
.040
.060
2-5/64
1-3/16
3991488
6271097
10159424
3991476
6271096
10128212
V8 350
5.7 L
4.000(IN)
101.6(MM)

CHEVY
ENGINE
1990-95

9.3
Hypereutectic flat head with 4 valve reliefs. Piston destroked .020".

APPROXIMATE HEAD VOLUME=7cc

Comp. Ht. 1.540
Pin Dia..9273 Offset
H1489*
Std.
.020
.030
.040
.060
1-2.0mm
1-1.5mm
1-4.0mm
10159436
10128452
T0Z2110V13
10128454
* NEW PISTON, AVAILABLE NOW
**NEW PISTON, CHECK FOR AVAILABILITY
Page 15

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