Isuzu 6H engine

Last updated
Isuzu 6H Engine
Overview
Manufacturer Isuzu and General Motors
Layout
Configuration Inline six-cylinder
Displacement 7.1–8.2 L; 434.9–502.0 cu in (7,127–8,226 cc)
Cylinder bore 115 mm (4.53 in)
Piston stroke 125 mm (4.92 in)
Cylinder block material Cast iron
Cylinder head material Cast iron
Valvetrain SOHC 4 valves × cyl.
Compression ratio 17.5:1, 17.0:1 for 300 hp (224 kW)
Combustion
Turbocharger With intercooler
Fuel system High-pressure common-rail direct injection
Fuel type Diesel
Cooling system Water-cooled
Output
Power output 165–300 PS (121–221 kW)
Torque output 520–860 lb⋅ft (705–1,166 N⋅m)

The Isuzu 6H is a family of inline six-cylinder diesel engines installed in Isuzu medium-duty trucks, and also installed in GM medium-duty trucks as the Duramax LG4. It is mated to the Allison 2500, 3000, and 3500 series transmissions.

Contents

Engine Specifications

6HK1/Duramax LG4

6HH1

6HE1

Engine Variants

ModelDisplacementOutputNotes
6HE1-N7.1 L; 434.9 cu in (7,127 cc)175 PS (129 kW)
6HE1-S195 PS (143 kW)
6HE1-TCN220 PS (162 kW)
6HE1-TCS250 PS (184 kW)
6HH1-N8.2 L; 502.0 cu in (8,226 cc)175 PS (129 kW)
6HH1-C185 PS (136 kW)
6HH1-S210 PS (154 kW)
6HL1-N7.2 L; 437.3 cu in (7,166 cc)180 PS (132 kW)
6HL1-S205 PS (151 kW)
6HK1-TCR7.8 L; 475.4 cu in (7,790 cc)205 PS (151 kW)
6HK1-TCN240 PS (177 kW)
6HK1-TCC260 PS (191 kW)
6HK1-TCS280 PS (206 kW)
6HK1-TCH300 PS (221 kW)
Duramax LG4 7800275 PS (202 kW)used in GMC medium-duty trucks

Vehicles

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References

  1. "6H Diesel Specifications: 2007 EPA Compliant". Archived from the original on August 24, 2010. Retrieved August 10, 2010.