GM High Feature engine

GM High Feature V6
Alloytec LPG V6 engine in a 2006-2008 Holden VE Commodore
Overview
ManufacturerGeneral Motors
Also calledAlloytec V6
Production2004–present
Layout
Configuration60° V6
Displacement
  • 2,792 cc (2.8 L; 170.4 cu in)
  • 2,994 cc (3.0 L; 182.7 cu in)
  • 3,195 cc (3.2 L; 195.0 cu in)
  • 3,564 cc (3.6 L; 217.5 cu in)
  • 3,649 cc (3.6 L; 222.7 cu in)
Cylinder bore
  • 86 mm (3.39 in)
  • 89 mm (3.5 in)
  • 94 mm (3.7 in)
  • 95 mm (3.74 in)
Piston stroke
  • 74.8 mm (2.94 in)
  • 80.3 mm (3.16 in)
  • 85.6 mm (3.37 in)
  • 85.8 mm (3.38 in)
Cylinder block materialAluminum
Cylinder head materialAluminum
ValvetrainDOHC 4 valves × cyl. with VVT
Compression ratio9.5:1, 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 speed6500–7200
Combustion
TurbochargerTwin-turbo (in some models) Single-turbo (in the 2.8L LP9 and LAU)
Fuel systemSequential multi-port fuel injection
Direct injection
Fuel typeGasoline, E85, LPG
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output201–464 hp (150–346 kW; 204–470 PS)
Torque output182–445 lb⋅ft (247–603 N⋅m)
Emissions
Emissions target standardEuro 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.[citation needed]

GM's Australian auto division Holden produced a HFV6 engine under the name "Alloytec."