Isuzu 6H Engine

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The Isuzu 6H is an inline-6 cylinder Diesel engine 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.

Specifications (2006 models)[edit]

  • Engine type: 7,785 cc (475.1 cu in) I6 turbo
  • Bore and stroke: 115 mm (4.53 in) x 125 mm (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 (17:1 for 300 hp motor)
  • Injection: high-pressure common-rail direct injection
  • Power / Torque: 200 bhp (150 kW) to 300 bhp (220 kW), 520 lb·ft (705 N·m) to 860 lb·ft (1,166 N·m)[1]

Vehicles[edit]


  1. ^ "6H Diesel Specifications: 2007 EPA Compliant". Retrieved August 10, 2010.