GM High Feature engine
| GM High Feature V6 | |
|---|---|
Alloytec LPG V6 engine in a 2006-2008 Holden VE Commodore | |
| Overview | |
| Manufacturer | General Motors |
| Also called | Alloytec V6 |
| Production | 2004–present |
| Layout | |
| Configuration | 60° V6 |
| Displacement |
|
| Cylinder bore |
|
| Piston stroke |
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| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC 4 valves × cyl. with VVT |
| Compression ratio | 9.5:1, 10.0:1, 10.2:1, 10.3:1, 11.3:1, 11.5:1, 11.7:1, 12.2:1 |
| RPM range | |
| Max. engine speed | 6500–7200 |
| Combustion | |
| Turbocharger | Twin-turbo (in some models) Single-turbo (in the 2.8L LP9 and LAU) |
| Fuel system | Sequential multi-port fuel injection Direct injection |
| Fuel type | Gasoline, E85, LPG |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 201–464 hp (150–346 kW; 204–470 PS) |
| Torque output | 182–445 lb⋅ft (247–603 N⋅m) |
| Emissions | |
| Emissions target standard | Euro 6 |
| Chronology | |
| Predecessor | |
The GM High Feature engine (also known as the HFV6, and including the 3600 LY7 and derivative LP1) is a family of modern DOHC V6 engines produced by General Motors. The series was introduced in 2004 with the Cadillac CTS and the Holden Commodore (VZ).
It is a 60° 24-valve design with aluminum block and heads and sequential multi-port fuel injection. Most versions feature continuously variable cam phasing on both intake and exhaust valves and electronic throttle control. Other features include piston oil-jet capability, forged and fillet rolled crankshaft, sinter forged connecting rods, a variable-length intake manifold, twin knock control sensors and coil-on-plug ignition. It was developed by the same international team responsible for the Ecotec, including the Opel engineers responsible for the 54° V6, with involvement with design and development engineering from Ricardo plc.
GM's Australian auto division Holden produced a HFV6 engine under the name "Alloytec."