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.
Engine specifications
6HK1/Duramax LG4
6HH1
- Displacement:
- Bore and stroke:
- Aspiration: Naturally aspirated
- Valvetrain: SOHC 24-valve
- Compression ratio: 18.5:1
- Injection: Reformed Bosch, inline injection pump with automatic timer, and all-speed mechanical governor
- Power/torque: ,
6HE1
- Displacement:
- Bore and stroke:
- Aspiration: naturally aspirated or turbocharged
- Valvetrain: direct injection, SOHC 24-valve
- Compression ratio: 16.9:1
- Injection: direct injection
- Power/torque: ,
Engine variants
Vehicles
References