Editing GM High Feature engine (section)

{{Infobox automobile engine
| name = GM High Feature V6
| image = Alloytec V6 (LPG) engine of a 2006-2008 Holden VE Commodore 1.jpg
| caption = Alloytec LPG V6 engine in a 2006-2008 [[Holden VE Commodore]]
| manufacturer = [[General Motors]]
| aka = Alloytec V6
| production = 2004–present
| predecessor = {{ubl |[[Buick V6 engine]]|[[GM 54-Degree V6 engine|54° V6]]|[[GM High Value engine]]|[[Northstar engine series#LX5 (Shortstar)|LX5 (Shortstar)]]}}
| configuration = 60° [[V6 engine|V6]]
| block = [[Aluminum]]
| head = Aluminum
| valvetrain = [[Dual overhead cam|DOHC]] [[Multi-valve#Four valves|4 valves × cyl.]] with [[Variable valve timing|VVT]]
| fuelsystem = [[Sequential multi-port fuel injection]]<br />[[Gasoline direct injection|Direct injection]]
| fueltype = [[Gasoline]], [[E85]], [[Autogas|LPG]]
| oilsystem = [[Wet sump]]
| coolingsystem = [[Radiator (engine cooling)|Water-cooled]]
| turbocharger = [[Twin-turbo]] (in some models)
Single-turbo (in the 2.8L LP9 and LAU)
| compression = 9.5:1, 10.0:1, 10.2:1, 10.3:1, 11.3:1, 11.5:1, 11.7:1, 12.2:1
| displacement = {{Unbulleted list|{{convert|2792|cc|L cid|1|abbr=on}}|{{convert|2994|cc|L cid|1|abbr=on}}|{{convert|3195|cc|L cid|1|abbr=on}}|{{convert|3564|cc|L cid|1|abbr=on}}|{{convert|3649|cc|L cid|1|abbr=on}}}}
| bore = {{Unbulleted list|{{convert|86|mm|in|2|abbr=on}}|{{convert|89|mm|in|abbr=on}}|{{convert|94|mm|in|abbr=on}}|{{convert|95|mm|in|2|abbr=on}}}}
| stroke = {{Unbulleted list|{{convert|74.8|mm|in|2|abbr=on}}|{{convert|80.3|mm|in|2|abbr=on}}|{{convert|85.6|mm|in|2|abbr=on}}|{{convert|85.8|mm|in|2|abbr=on}}}}
| redline = 6500–7200
| emissions level = [[Euro 6]]
| power = {{Convert|201-464|hp|kW PS|0|abbr=on}}
| torque = {{convert|182-445|lbft|Nm|0|abbr=on}}
}}

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 engine]]s 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 [[Continuous variable valve timing|continuously variable cam phasing]] on both intake and exhaust valves and [[electronic throttle control]]. Other features include piston oil-jet capability, forged and [[Deep Rolling|fillet rolled]] [[crankshaft]], sinter forged [[connecting rod]]s, a [[VLIM|variable-length intake manifold]], twin knock control sensors and [[Direct Ignition#Direct ignition|coil-on-plug ignition]]. It was developed by the same international team responsible for the [[GM Ecotec engine#Ecotec|Ecotec]], including the [[Opel]] engineers responsible for the [[General Motors 54° V6 engine|54° V6]], with involvement with design and development engineering from [[Ricardo plc]].{{cn|date=January 2024}}

GM's Australian auto division [[Holden]] produced a HFV6 engine under the name "[[#Holden High Feature engine|Alloytec]]."