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.
6HK1/Duramax LG4
6HH1
6HE1
Model | Displacement | Output | Notes |
---|---|---|---|
6HE1-N | 7.1 L; 434.9 cu in (7,127 cc) | 175 PS (129 kW) | |
6HE1-S | 195 PS (143 kW) | ||
6HE1-TCN | 220 PS (162 kW) | ||
6HE1-TCS | 250 PS (184 kW) | ||
6HH1-N | 8.2 L; 502.0 cu in (8,226 cc) | 175 PS (129 kW) | |
6HH1-C | 185 PS (136 kW) | ||
6HH1-S | 210 PS (154 kW) | ||
6HL1-N | 7.2 L; 437.3 cu in (7,166 cc) | 180 PS (132 kW) | |
6HL1-S | 205 PS (151 kW) | ||
6HK1-TCR | 7.8 L; 475.4 cu in (7,790 cc) | 205 PS (151 kW) | |
6HK1-TCN | 240 PS (177 kW) | ||
6HK1-TCC | 260 PS (191 kW) | ||
6HK1-TCS | 280 PS (206 kW) | ||
6HK1-TCH | 300 PS (221 kW) | ||
Duramax LG4 7800 | 275 PS (202 kW) | used in GMC medium-duty trucks |
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