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
