GMC T Series 1994 Repair Manual page 446

ENGINE SPECIFICATIONS (4.3L) (CONT.)
All Specifications are in INCHES unless otherwise noted.
DISPLACEMENT:
CRANKSHAFT:
Diameter
Main
Journal
Taper
Out Of
Round
Production
Main
Bearing
Clearance
Service
Limit
Crankshaft End Play
Crankshaft Runout
Taper
Crankpin
Out Of
Round
Rod Bearing
Clearance
Rod Side Clearance
CAMSHAFT:
Lobe
Lift ± 0.002
Journal Diameter
VALVE SYSTEM:
Lifter
Rocker Arm Ratio
Valve Lash
Face Angle (Intake & Exhaust)
Seat Angle (Intake & Exhaust)
Seat Runout (Intake & Exhaust)
Seat Width
Production
Stem
Clearance
Service
Free Length
Valve
Pressure
Spring
lbs. @ in.
(Outer)
Installed Height ± 1/32"
Valve Spring
Damper
Approx # of Coils
Valve Lift
SPECIFICATIONS
#1
#2, #3
#4
Production
Service Limit
Production
Service Limit
#1
#2, #3
#4
#1
#2, #3
#4
Diameter
Production
Service Limit
Production
Service Limit
Production
Service Limit
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Closed
Open
Free Length
Intake
Exhaust
4.3L (L35, VIN W)
2.4488-2.4495
2.4485-2.4494
2.4480-2.4489
0.0002 (Maximum)
0.001 (Maximum)
0.0002 (Maximum)
0.001 (Maximum)
0.0008-0.0020
0.0011-0.0023
0.0017-0.0032
0.0010-0.0015
.0010-0.0025
0.0025-0.0035
0.002-0.007
0.001 (Maximum)
2.2487-2.2497
0.0002
0.001 (Maximum)
0.0002
0.001 (Maximum)
0.0013-0.0035
0.0030
0.006-0.014
0.288
0.294
1.8682-1.8692
0.001-0.009
Hydraulic
1.50:1
Torque Rocker Arm Nut to 27 N-m (20 ft. lbs.)
45°
46°
0.002 (Maximum)
0.035-0.060
0.062-0.093
0.0011-0.0027
0.0011-0.0027
High Limit Production +0.001
High Limit Production +0.002
2.03
76-84 lbs. 1.70-in.
@
194-206 lbs. @ 1.25-in.
1.690-1.710
1.86
4
0.432
0.441