Isuzu 6H engine

6HK1/Duramax LG4

• Displacement: 7.8 to 7.8 L; 475.1 to 475.4 cu in (7,785 to 7,790 cc)
• Bore and stroke: 115 mm × 125 mm (4.53 in × 4.92 in)
• Block: gray iron
• Cylinder head: cast iron
• Fuel cutoff: 2400 rpm
• Aspiration: Turbocharged and Intercooled
• Valvetrain: SOHC, 24 Valve
• Compression: 17.5:1 (17.0:1 for 300 hp (224 kW) motor)
• Injection: high-pressure common-rail direct injection
• Power / Torque: 200 bhp (149 kW) to 300 bhp (224 kW), 520 lb⋅ft (705 N⋅m) to 860 lb⋅ft (1,166 N⋅m)[1]

6HH1

• Displacement: 8,226 cc (8.226 L; 502.0 cu in)
• Bore and Stroke: 115 mm × 132 mm (4.5 in × 5.2 in)
• Aspiration: Naturally Aspirated
• Valvetrain: OHC 24 valve
• Compression Ratio: 18.5:1
• Injection: Reformed Bosch, Inline Injection Pump with Automatic Timer and All-Speed Mechanical Governor
• Power / Torque: 173–200 hp (175–203 PS) and 47–51 kg⋅m (340–370 lb⋅ft)

6HE1

• Displacement: 7,127 cc (7.127 L; 434.9 cu in)
• Bore and Stroke:110 mm × 125 mm (4.3 in × 4.9 in)
• Aspiration: Naturally Aspirated and Turbocharged
• Valvetrain: Direct Injection 24 valve
• Compression Ratio: 16.9:1
• Injection: Direct Injection
• Power / Torque: 165–260 hp (167–264 PS) and 46–77 kg⋅m (450–760 N⋅m; 330–560 lb⋅ft)

• Isuzu F-Series
• Chevrolet T-Series
• Isuzu H-Series