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ENGINE APPLICATION MANUAL GM Powertrain
Gasoline 4.3L V6 90 Degree Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558 Printed: 8/15/00
6
Regulator Delphi Delphi
Cartridge Cartridge
Nominal Pressure 425 425 Kpa
Injectors Delphi Delphi
Recommended Fuel 87 87 Octane = (R+M)/2
Water Pump Type: Centrifugal Centrifugal
Water Pump Maximum Flow @ Engine RPM: 76.5 76.5 GPM @ 4600
RPM
Maximum Sustained Coolant Temperature: 262 262 F
Thermostat Setting
Starts to Open 180 180 F
Full Open 262 262 F
Bearing Type Ball/Roller Ball/Roller
Impeller Material Cast iron Cast iron
Housing Material Cast iron Cast iron
By Pass Recirculation Type External External
Water Jackets full length of Cylinder Yes Yes
Water Jackets all around Cylinder Yes Yes
Water Jackets open at head face No No
Surge Tank System No No
Coolant Fill LocationDeaeration Tank Deaeration Tank
Circulation Thermostat Type Bypass Bypass
- direction of rotation : CCW CCW
- drive ratio (relative to crankshaft) 1.25 1.25
2.3.2 Fuel Requirements
The 4.3L V6 90 Degree Engine System meets the emissions standard established in the FMVS
and EPA regulations with fuel quality in accordance with the API standards.
The engine must operate on the following types of fuels:
Unleaded Gasoline 87 (R+M)/2 (ASTM D4814),
Unleaded Gasoline 87 (R+M)/2 with up 15 % MTBE (Methyl Tertiary-Butyl Ether),
Canadian Gasoline 87 (R+M)/2 (CGSB 3.5-92) w/ MMT @ 18 mg/L manganese,
Reformulated Gasoline,
Premium Unleaded 91 (R+M)/2,
Export Gasoline as low as 80 (R+M)/2,
South American Gasoline with Peroxide contamination to 2.5%
Methanol mixes with gasoline to 15 %,
Ethanol mixes with gasoline to 25 %, Brazilian fuel system (SCPI) required.
Leaded Gasoline. Special cylinder heads required- NM8
ENGINE L35 L35 UNITS
Truck Application Marine
Application