GENERAL INFORMATION GENERAL INFORMATION
GENERAL INFORMATION The Specification of PSI 4.3L SI Engine GENERAL DESCRIPTION ENGINE TYPE:
90°4-Cycle V6, Water Cooled
COMBUSTION SYSTEM:
Naturally Aspirated
EXHAUST SYSTEM:
Cast Iron, Dry Pushrod Actuated Overhead Valves - 2 Per Cylinder
VALVE CONFIGURATION:
Auto Lash adjustment by hydraulic vavle lifter
CAMSHAFT DRIVING:
Timing Chain System
BALANCE SHAFT:
One Balance Shaft System
DISPLACEMENT:
4294 cc (262 CID)
BORE:
101.60 mm (4.00 in.)
STROKE:
88.39 mm (3.48 in.)
COMPRESSION RATIO:
9.8:1
COMPRESSION PRESSURE:
690 kPA (100 psi) Minimum
FIRING ORDER:
1-6-5-4-3-2
SPARK PLUGS
AC Delco R42LTS or R44LTS, 0.76 mm (0.03i n.) Air Gap
WEIGHT
296 Kg (653 lbs.), Wet
ROTATION:
Counter-Clockwise (CCW) when viewed from Flywheel End
FUELTYPE
LPG
GOVERNED SPEED:
2500 +/- 25 RPM
IDLE RPM:
750 +/- 25 RPM
IGNITION TIMING:
Electronic controlled by ECM
LP FUEL SYSTEM MIXER:
Diaphragm Type Air Valve Assembly inside, Downdraft
REGULATOR:
Two-Stage Negative Pressure Regulator
FUEL FILTRATION:
40 Microns Maximum
COOLING SYSTEM WATER PUMP ROTATION:
Serpentine Belt Drive - Clockwise (CW) when viewed from engine front Opening Temperature: 82°C (180°F)
THERMOSTAT: COOLING WATER CAPACITY
Fully Open Temperature: 96°C (205°F) 7.3L
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