Chevrolet 1988 Light Duty Truck Repair Manual page 447

All Specifications are in INCHES unless otherwise noted.
GENERAL DATA:
Type
Displacement
RPO
Bore
Stroke
Compression Ratio
Firing Order
Oil Pressure
CYLINDER BORE:
Diameter
Production
Out Of
Service
Round
nuuuv/iiui i
Taper
Service
PISTON:
Production
v^iearanue
Service Limit
PISTON RING:
C
0
Production
Groove
M
P
R
Service Limit
b
s
s
Production
Gap
1
0
Service Limit
N
Production
Groove
0
Clearance Service Limit
1
Production
Ucip
L
Service Limit
PISTON PIN:
Diameter
Production
Clearance
In Piston Service Limit
Fit In Rod
SPECIFICATIONS
ENGINE SPECIFICATIONS
Thrust Side
Relief Side
Top
2nd
Top
2nd
4.3 LITER V-6 6A3-27
V6
4.3L (262 Cu. In.)
LB4
4.00
3.48
9.3:1
1 - 6 - 5 - 4 - 3 - 2
10 psi 500 RPM; 30-35 psi @ 2000 RPM
@
3.9995-4.0025'
0.001 (Maximum)
0.002 (Maximum)
0.0005 (Maximum)
0.001 (Maximum)
0.001 (Maximum)
0.0007-0.0017
0.0027 (Maximum)
0.0012-0.0032
Hi Limit Production + 0.001
0.010-0.020
0.010-0.025
Hi Limit Production + 0.010
0.002-0.007
Hi Limit Production + 0.001
0.015-0.055
Hi Production +0.010
0.9270-0.09273
0.0002-0.0007
0.001 (Maximum)
0.0008-0.0016 Interference
F-04489