GM High Feature engine
|High Feature V6|
|Also called||Alloytec V6|
|Cylinder block alloy||Aluminum|
|Cylinder head alloy||Aluminum|
|Valvetrain||Dual overhead cam|
|Fuel system||Sequential multi-point fuel injection|
|Oil system||Wet sump|
The GM High Feature engine (also known as the HFV6, and including the 3600 LY7 and derivative LP1) is a family of modern General Motors DOHC V6s. The series was introduced in 2004 with the Cadillac CTS.
It is a 60° 24-valve design with aluminum block and heads and Sequential Electronic 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.
Holden sells the HFV6 under the name Alloytec. The High Feature moniker on the Holden produced engine is reserved for the twin cam phasing high output version. The block was designed to be expandable from 2.8 L to 4.0 L. High Feature V6 engines were previously produced in Fishermans Bend, Port Melbourne, Australia and remain in production at the following four manufacturing locations: St. Catharines, Canada; Flint Engine South in Flint, Michigan, United States; Romulus Engine Plant in Romulus, MI and Ramos Arizpe, Coahuila, Mexico. The assembly lines for the St. Catharines and Flint facilities were manufactured by Hirata Corporation at their powertrain facility in Kumamoto, Japan. Most of the designs of this motor happened in Flint. They were first produced for the Cadillac range.
The HFV6 was first designed, tested and produced in a joint program by Cadillac and Holden. A majority of designs into the new alloy construction, transmission pairing and first use in production were all undertaken in Detroit (and manufactured in St. Catharines, Ontario). Holden had the job of developing smaller engines (Holden 3.2, LP1 and Saab 2.8, LP9 Turbo) as well as their own Holden 3.6 HFV6 (called the Alloytec V6) for local models.
Cadillac and Holden both tested variations of these engines in US and Australia.
|Displacement||2,792 cc (170.4 cu in)|
|Cylinder bore||89.0 mm (3.504 in)|
|Piston stroke||74.8 mm (2.945 in)|
A 2.8 L (2792 cc) LP1 variant was introduced in the 2005 Cadillac CTS. It was also used on the Chinese 2008 CTS. It has a 89.0 mm (3.50 in) bore, a 74.8 mm (2.94 in) stroke, and a 10.0:1 compression ratio. The LP1 was built in Saint Catharines, Ontario.
|2007–2009||Buick Park Avenue (China)||201 hp (150 kW) @ 6500 rpm||195 lb⋅ft (264 N⋅m) @ 2600 rpm|
|2005–2007||Cadillac CTS||210 hp (157 kW) @ 6500 rpm||194 lb⋅ft (263 N⋅m) @ 3300 rpm|
|2008-2010||Cadillac CTS||210 hp (157 kW) @ 6800 rpm||182 lb⋅ft (247 N⋅m) @3600 rpm|
|2007–2009||Cadillac SLS (China)||209 hp (156 kW) @ 6500 rpm||194 lb⋅ft (263 N⋅m) @ 3300 rpm|
This engine is also known as a A28NET, Z28NET or B284.
The LP9 is a 2.8 L turbocharged version used for the Saab 9-3, Saab 9-5 and other GM vehicles. It has the same bore and stroke as the naturally aspirated LP1, however the compression ratio is reduced to 9.5:1. The engine is manufactured at Holden's Fishermans Bend engine factory in Port Melbourne, Australia, while GM Powertrain Sweden (formerly Saab Automobile Powertrain) is responsible for turbocharging the engine. Global versions of this engine use the same horsepower rating for both metric and imperial markets – mechanical horsepower – while the Europe-only versions are rated in metric horsepower.
|2005-2008||Opel Vectra / Vauxhall Vectra||230 hp (172 kW; 233 PS) @ 5500 rpm||330 N⋅m (240 lb⋅ft) @ 1900-4500 rpm|
|2005-2008||Opel Signum||230 hp (172 kW; 233 PS) @ 5500 rpm||330 N⋅m (240 lb⋅ft) @ 1900-4500 rpm|
|2005||Opel Vectra OPC||247 hp (184 kW; 250 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2006–2008||276 hp (206 kW; 280 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2006–2009||Cadillac BLS||250 hp (186 kW; 253 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2006–2008||Saab 9-3 Aero||250 hp (186 kW; 253 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2009||280 hp (209 kW; 284 PS) @ 5500 rpm||400 N⋅m (300 lb⋅ft) @ 1900-4500 rpm|
|2008||Saab 9-3 Turbo X||280 hp (209 kW; 284 PS) @ 5500 rpm||400 N⋅m (300 lb⋅ft) @ 1900-4500 rpm|
|2008||Saab 9-3 Aero Convertible||255 hp (190 kW; 259 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2009||Saab 9-3 Aero Convertible||280 hp (209 kW; 284 PS) @ 5500 rpm||370 N⋅m (270 lb⋅ft) @ 1900-4500 rpm|
|2009–2013||Opel/Vauxhall Insignia||256 hp (191 kW; 260 PS) @ 5500 rpm||350 N⋅m (260 lb⋅ft) @ 1900-4500 rpm|
|2009–2013||Opel/Vauxhall Insignia OPC/VXR||321 hp (239 kW; 325 PS) @ 5250 rpm||435 N⋅m (321 lb⋅ft) @ 1900-4500 rpm|
|2010–2012||Saab 9-5 Turbo6 XWD /Aero||296 hp (221 kW; 300 PS) @ 5500 rpm||400 N⋅m (300 lb⋅ft) @ 2000 rpm|
|2010–2012||Saab 9-5 Hirsch Performance||330 hp (246 kW; 335 PS) @ 5500 rpm||430 N⋅m (320 lb⋅ft) @ 2500 rpm|
The LAU is GM's new code for the LP9 Turbo engine, its usage starting with the 2010 Cadillac SRX. In 2011, production of the Cadillac SRX with the LAU engine ceased, but the engine will still be used in the Saab 9-4X from 2011 onwards. In 2012, production of the 9-4X ceased.
|2010-2011||Cadillac SRX||300 hp (224 kW) @ 5500 rpm||295 lb⋅ft (400 N⋅m) @ 2000 rpm|
|2011-2012||Saab 9-4X||300 hp (224 kW) @ 5500 rpm||295 lb⋅ft (400 N⋅m) @ 2000 rpm|
|Displacement||2,994 cc (182.7 cu in)|
|Cylinder bore||89.0 mm (3.504 in)|
|Piston stroke||80.3 mm (3.161 in)|
The LF1 is a 3.0-liter version equipped with spark ignition direct injection (SIDI).
|2010||Buick LaCrosse||255 hp (190 kW; 259 PS) @ 6950 rpm||217 lb⋅ft (294 N⋅m) @ 5600 rpm|
|2010–2012||Buick Park Avenue (China)||251 hp (187 kW; 254 PS) @ 6700 rpm||218 lb⋅ft (296 N⋅m) @ 2900 rpm|
|2010–2011||Cadillac CTS||270 hp (201 kW; 274 PS) @ 7000 rpm||223 lb⋅ft (302 N⋅m) @ 5700 rpm|
|2011–2013||Cadillac SLS (China)||200 kW (268 hp) @ 7000 rpm||300 N⋅m (221 ft⋅lb) @ 5600 rpm|
|2010–2011||Cadillac SRX||265 hp (198 kW; 269 PS) @ 6950 rpm||223 lb⋅ft (302 N⋅m) @ 5100 rpm|
|2010||Chevrolet Equinox||264 hp (197 kW; 268 PS) @ 6950 rpm||222 lb⋅ft (301 N⋅m) @ 5100 rpm|
|2010||GMC Terrain||264 hp (197 kW; 268 PS) @ 6950 rpm||222 lb⋅ft (301 N⋅m) @ 5100 rpm|
|2010||Holden Commodore||255 hp (190 kW; 259 PS) @ 6700 rpm||214 lb⋅ft (290 N⋅m) @ 2900 rpm|
|2011||Saab 9-4X||265 hp (198 kW; 269 PS) @ 6950 rpm||223 lb⋅ft (302 N⋅m) @ 5100 rpm|
|2011||Chevrolet Captiva||255 hp (190 kW; 259 PS) @ 6900 rpm||212 lb⋅ft (287 N⋅m) @ 5800 rpm|
|2012||Chevrolet Malibu (Middle East)||260 hp (194 kW; 264 PS) @ 6900 rpm||214 lb⋅ft (290 N⋅m) @ 5600 rpm|
The LFW is a flexible fuel version of the LF1, capable of running on E85, gasoline, or any mixture of the two. Output is identical to the LF1.
|2011-2017||Buick GL8 (China only)||254 hp (189 kW; 258 PS) @ 6800 rpm||214 ft⋅lbf (290 N⋅m) @ 5200 rpm|
|2011–2012||Chevrolet Equinox||264 hp (197 kW; 268 PS) @ 6950 rpm||222 ft⋅lbf (301 N⋅m) @ 5100 rpm|
|2011–2012||GMC Terrain||264 hp (197 kW; 268 PS) @ 6950 rpm||222 ft⋅lbf (301 N⋅m) @ 5100 rpm|
|2012–2013||Cadillac CTS||270 hp (201 kW; 274 PS) @ 7000 rpm||223 lb⋅ft (302 N⋅m) @ 5700 rpm|
|2012–2013||Chevrolet Captiva Sport||264 hp (197 kW; 268 PS) @ 6950 rpm||222 ft⋅lbf (301 N⋅m) @ 5100 rpm|
|Displacement||3,195 cc (195.0 cu in)|
|Cylinder bore||89.0 mm (3.504 in)|
|Piston stroke||85.6 mm (3.370 in)|
Holden has built its own 3.2 L version of the High Feature engine in Australia. Branded with the Alloytec name like the 3.6 litre version, this version produces 227 hp (169 kW) at 6600 rpm and 297 N⋅m (219 lb⋅ft) at 3200 rpm. Its fuel economy is 4–6 km/liter in city, and 7–9 km/liter on highway.. Holden also produced the 3.2 L engines that were used by Alfa Romeo as the basis of its JTS V6 engine.
- 2006-2010 Daewoo Winstorm / Chevrolet Captiva / Holden Captiva
- 2006-2010 Opel Antara / Daewoo Winstorm MaXX / Holden Captiva MaXX
- Suzuki Vitara
3.6 L engine in a Holden VZ Commodore
|Displacement||3,564 cc (217.5 cu in)|
|Cylinder bore||94.0 mm (3.701 in)|
|Piston stroke||85.6 mm (3.370 in)|
|Dry weight||168 kg (370 lb) (3.6 V6 High Feature engine)|
The 3.6 L (3,564 cc (217.5 cu in)) LY7 engine was introduced in the 2004 Cadillac CTS sedan. It has a 10.2:1 compression ratio, a bore of 94.0 mm (3.70 in) and a stroke of 85.6 mm (3.37 in). Lower powered versions only have variable cam phasing on the inlet cam (LEO). Selected models also include variable exhaust. The engine weighs 370 lb (170 kg) as installed.
This engine is produced in several locations: St. Catharines (Ontario), Flint Engine South (Michigan), Melbourne (Australia), Ramos Arizpe (Mexico), and Sagara (Japan) by Suzuki.
Suzuki's engine designation is N36A.
A dual fuel 235 hp (175 kW) version able to run on petrol and autogas (LPG) has also been produced by Holden in Australia.
|2004–2007||Buick Rendezvous CXL/Ultra||242 hp (180 kW) @ 6000 rpm||232 lb⋅ft (315 N⋅m) @ 3500 rpm|
|2004–2007||Cadillac CTS||255 hp (190 kW) @ 6200 rpm||252 lb⋅ft (342 N⋅m) @ 2800 rpm|
|2008–2009||Cadillac CTS||263 hp (196 kW) @ 6200 rpm||253 lb⋅ft (343 N⋅m) @ 3100 rpm|
|2004–2009||Cadillac SRX||255 hp (190 kW) @ 6500 rpm||254 lb⋅ft (344 N⋅m) @ 2800 rpm|
|2004–2005||Holden VZ Commodore||235 hp (175 kW) @ 6000 rpm||236 lb⋅ft (320 N⋅m) @ 2800 rpm|
|2006–2007||231 hp (172 kW) @ 6000 rpm||236 lb⋅ft (320 N⋅m) @ 2800 rpm|
|2004–2006||Holden VZ Commodore Holden WL Statesman Holden VZ Calais SV6||255 hp (190 kW) @ 6500 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2006–2007||255 hp (190 kW) @ 6500 rpm||247 lb⋅ft (335 N⋅m) @ 3200 rpm|
|2005–2008||Buick LaCrosse CXS||240 hp (179 kW) @ 6000 rpm||225 lb⋅ft (305 N⋅m) @ 2000 rpm|
|2005–2007||Cadillac STS||255 hp (190 kW) @ 6500 rpm||252 lb⋅ft (342 N⋅m) @ 3200 rpm|
|2006–2007||Holden VE Commodore Omega||240 hp (179 kW) @ 6000 rpm||243 lb⋅ft (329 N⋅m) @ 2600 rpm|
|2008–2009||235 hp (175 kW) @ 6500 rpm||240 lb⋅ft (325 N⋅m) @ 2400 rpm|
|2006–2009||Holden WM Statesman/Caprice||262 hp (195 kW) @ 6500 rpm||250 lb⋅ft (339 N⋅m) @ 2600 rpm|
|2007–2009||Buick Park Avenue (China)||255 hp (190 kW) @ 6600 rpm||250 lb⋅ft (339 N⋅m) @ 2800 rpm|
|2007–2009||Cadillac SLS (China)||251 hp (187 kW) @ 6500 rpm||252 lb⋅ft (342 N⋅m) @ 3200 rpm|
|2006–2011||Holden Rodeo/Colorado||211 hp (157 kW) @ 6500 rpm||231 lb⋅ft (313 N⋅m) @ 2600 rpm|
|2007–2008||GMC Acadia||275 hp (205 kW) @ 6600 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2007||Pontiac G6 GTP||252 hp (188 kW) @ 6300 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2007–2009||Saturn Aura XR||252 hp (188 kW) @ 6300 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2007–2008||Saturn Outlook XE single exhaust||270 hp (201 kW) @ 6600 rpm||248 lb⋅ft (336 N⋅m) @ 3200 rpm|
|2007–2008||Saturn Outlook XR dual exhaust||275 hp (205 kW) @ 6600 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2008||Buick Enclave||275 hp (205 kW) @ 6600 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2008–2012||Chevrolet Malibu||252 hp (188 kW) @ 6300 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2008–2009||Chevrolet Equinox Sport||264 hp (197 kW) @ 6500 rpm||250 lb⋅ft (339 N⋅m) @ 2300 rpm|
|2008–2009||Pontiac G6 GXP||252 hp (188 kW) @ 6300 rpm||251 lb⋅ft (340 N⋅m) @ 3200 rpm|
|2008–2009||Pontiac G8||256 hp (191 kW) @ 6300 rpm||248 lb⋅ft (336 N⋅m) @ 2100 rpm|
|2008–2009||Pontiac Torrent GXP||264 hp (197 kW) @ 6500 rpm||250 lb⋅ft (339 N⋅m) @ 2300 rpm|
|2008–2009||Saturn Vue XR / Red Line||257 hp (192 kW) @ 6500 rpm||248 lb⋅ft (336 N⋅m) @ 2100 rpm|
|2007-2009||Suzuki XL7||252 hp (188 kW) at 6500 rpm||243 lb⋅ft (329 N⋅m) at 2300 rpm|
The 3.6 litre (3564 cc) LLT is a direct injected version based on the earlier LY7 engine. It was first unveiled in May 2006, and the DI version was claimed to have 15 percent greater power, 8 percent greater torque, and 3 percent better fuel economy than its port-injected counterpart. The LLT engine has a compression ratio of 11.3:1, and has been certified by the SAE to produce 302 horsepower (225 kW) at 6300 rpm and 272 lb⋅ft (369 N⋅m) of torque at 5200 rpm on regular unleaded (87 octane) gasoline. This engine debuted on the 2008 Cadillac STS and CTS. GM used a LLT in all 2009 Lambda-derived crossover SUVs to allow class-leading fuel economy in light of the new Corporate Average Fuel Economy (CAFE) standards. In the Lambdas, LLT engine produces 288 horsepower (215 kW) and 270 lb⋅ft (366 N⋅m) of torque.
|2008–2011||Cadillac CTS||304 hp (227 kW) @ 6400 rpm||273 lb⋅ft (370 N⋅m) @ 5200 rpm|
|2008–2011||Cadillac STS||302 hp (225 kW) @ 6300 rpm||272 lb⋅ft (369 N⋅m) @ 5200 rpm|
|2009–2017||Buick Enclave||288 hp (215 kW) @ 6300 rpm||270 lb⋅ft (366 N⋅m) @ 3400 rpm||2016 link|
|2009–2017||Chevrolet Traverse single exhaust||281 hp (210 kW) @ 6300 rpm||266 lb⋅ft (361 N⋅m) @ 3400 rpm||2016 link (red)|
|2009–2017||Chevrolet Traverse dual exhaust||288 hp (215 kW) @ 6300 rpm||270 lb⋅ft (366 N⋅m) @ 3400 rpm||2016 link (blue)|
|2009–2016||GMC Acadia||288 hp (215 kW)||270 lb⋅ft (366 N⋅m)||2016 link|
|2009||Saturn Outlook single exhaust||281 hp (210 kW) @ 6300 rpm||266 lb⋅ft (361 N⋅m) @ 3400 rpm|
|2009||Saturn Outlook dual exhaust||288 hp (215 kW) @ 6300 rpm||270 lb⋅ft (366 N⋅m) @ 3400 rpm|
|2009–2011||Holden VE Commodore SV6||281 hp (210 kW) @ 6400 rpm||258 lb⋅ft (350 N⋅m) @ 2900 rpm|
|2009–2011||Holden WM Statesman/Caprice||281 hp (210 kW) @ 6400 rpm||258 lb⋅ft (350 N⋅m) @ 2900 rpm|
|2010–2011||Buick LaCrosse CXS||280 hp (210 kW) @ 6400 rpm||259 lb⋅ft (351 N⋅m) @ 5200 rpm|
|2010-2011||Chevrolet Camaro||312 hp (233 kW) @ 6400 rpm||278 lb⋅ft (377 N⋅m) @ 5200 rpm|
|2010–2011||Cadillac SLS (China)||229 kW (307 hp) @ 6400 rpm||276 lb⋅ft (374 N⋅m) @ 5200 rpm|
The LFX is an enhanced version of the LLT engine. Introduced in the MY2012 Chevrolet Camaro LS, it is 20.5 pounds (9.3 kg) lighter than the LLT, due to a redesigned cylinder head and integrated exhaust manifold, and composite intake manifold. Other components like the fuel injectors, intake valves, and fuel pump have also been updated. Power and torque are up slightly from the LLT. The compression ratio is 11.5:1. The LFX also features E85 flex-fuel capability.
|2012–2016||Buick LaCrosse||303 hp (226 kW) @ 6800 rpm||264 lb⋅ft (358 N⋅m) @ 5300 rpm||link|
|2013–2015||Cadillac ATS||321 hp (239 kW) @ 6800 rpm||274 lb⋅ft (371 N⋅m) @ 4800 rpm||link|
(2014 Wagon & Coupe only)
|318 hp (237 kW) @ 6800 rpm||275 lb⋅ft (373 N⋅m) @ 4900 rpm||link|
(2014 Sedan only)
|321 hp (239 kW) @ 6800 rpm||275 lb⋅ft (373 N⋅m) @ 4900 rpm||link|
|2012–2016||Cadillac SRX||308 hp (230 kW) @ 6800 rpm||265 lb⋅ft (359 N⋅m) @ 2400 rpm||link|
|2013–present||Cadillac XTS||304 hp (227 kW) @ 6800 rpm||264 lb⋅ft (358 N⋅m) @ 5200 rpm||link|
|2012–2015||Chevrolet Camaro||323 hp (241 kW) @ 6800 rpm||278 lb⋅ft (377 N⋅m) @ 4800 rpm||link|
|2012–2017||Chevrolet Caprice PPV||301 hp (224 kW) @ 6700 rpm||265 lb⋅ft (359 N⋅m) @ 4800 rpm||link|
|2015–2016||Chevrolet Colorado||305 hp (227 kW) @ 6800 rpm||269 lb⋅ft (365 N⋅m) @ 4000 rpm||link|
|2013–2017||Chevrolet Equinox||301 hp (224 kW) @ 6500 rpm||272 lb⋅ft (369 N⋅m) @ 4800 rpm||link|
|2012–2013||Chevrolet Impala||302 hp (225 kW) @ 6500 rpm||262 lb⋅ft (355 N⋅m) @ 5300 rpm|
|2014–present||Chevrolet Impala||305 hp (227 kW) @ 6500 rpm||262 lb⋅ft (355 N⋅m) @ 5300 rpm||link|
|2013–2017||GMC Terrain||301 hp (224 kW) @ 6500 rpm||272 lb⋅ft (369 N⋅m) @ 4800 rpm||link|
|2011–2015||Holden Caprice||281 hp (210 kW) @ 6700 rpm||258 lb⋅ft (350 N⋅m) @ 2800 rpm|
|2011–2013||Holden Commodore VE II (MY 2012)||281 hp (210 kW) @ 6700 rpm||258 lb⋅ft (350 N⋅m) @ 2800 rpm|
|2013–2017||Holden Commodore VF||281 hp (210 kW) @ 6700 rpm||258 lb⋅ft (350 N⋅m) @ 2800 rpm|
The LWR is dedicated LPG 3.6 liter engine. Introduced in the MY2012 Holden Commodore, Based on the 3.6-litre LY7 engine, the LWR had a vapour injection system. The vapour injection system injected gas directly into the air intake runner, thereby preventing excess gas from circulating through the air intake system. Although liquid LPG injection generally produces more power, Holden justified vapour injection on the grounds of lower fuel consumption, lower CO2 emissions, reduced pumping and parasitic losses, and start-up reliability in hot weather.
The dedicated LPG LWR engine produced peak power and torque of 180kW at 6000rpm and 320Nm at 2000rpm. The LWR engine was engine was mated to GM’s six-speed 6L45 automatic transmission and, over the combined ADR 81/02 test cycle, the Commodore Omega achieved fuel consumption of 11.8 L/100 km – an improvement of 1.6 L/100 km compared to its dual fuel LW2 predecessor. Furthermore, the LWR engine exceeded Euro 6 emissions standards.
- Specially hardened valves and valve seats.
- A redesigned cylinder head and manifold for improved air flow.
- Variable exhaust valve timing (the LW2 engine only had variable intake valve timing)
- Specially-developed fuel injectors.
- New pistons with pentroof-style centre-domes and valve eyelets for a higher compression ratio of 12.2:1 (compared to 10.2:1 for the dual fuel engine).
- A new fuel rail and a new LPG fuel filter.
|2012–2013||Holden Commodore VE II (MY 2012)||241 hp (180 kW) @ 6000 rpm||236 lb⋅ft (320 N⋅m) @ 2000 rpm|
|2013–2015||Holden Commodore VF||241 hp (180 kW) @ 6000 rpm||236 lb⋅ft (320 N⋅m) @ 2000 rpm|
|2012–2015||Holden Caprice||241 hp (180 kW) @ 6000 rpm||236 lb⋅ft (320 N⋅m) @ 2000 rpm|
The 3.6 litre (3564 cc) LCS is derived from the direct-injected LLT for use in hybrids, using the two-mode system. Differences from the LLT include a slightly lower compression ratio, 11.3:1, and lower power and torque peaks. It was to debut in the 2009 Saturn Vue Hybrid, where it would make 262 hp (195 kW) at 6100 rpm and 250 lb⋅ft (339 N⋅m) of torque at 4800 rpm. Fuel economy 6–8 km/liter in city, 9–11 km/liter on highway Applications:
- 2009 Saturn Vue Hybrid [product canceled]
The engine is rated at 420 hp (313 kW) of power @ 5750 rpm and 430 lb⋅ft (583 N⋅m) of torque @ 3500-4500 rpm (with 90% of torque being available at 2500-5500 rpm) and helps the CTS achieve 0-60 mph time of 4.6 seconds with an 8-speed automatic transmission.
In essence, the twin-turbo 3.6L V6 is the force-inducted variant of the popular LFX V6 currently found in the Cadillac ATS, XTS, and SRX, among many other GM models, with several important upgrades, including:
- All-new cylinder block casting
- All-new cylinder head castings
- Strengthened connecting rods
- Forged steel crankshaft
- Continuously variable valve timing
- Large 38.3 mm intake valves and 30.6 mm sodium-filled exhaust valves
- Machined, domed aluminum pistons with top steel ring carrier for greater strength
- 10.2:1 compression ratio
- Patented, integrated charge air cooler system with low-volume air ducts
- Two turbochargers produce more than 12 pounds of boost (80 kPa)
- Vacuum-actuated wastegates with electronic control valves
- All-new direct injection fuel system
- Tuned air inlet and outlet resonators, aluminum cam covers and other features that contribute to exceptional quietness and smoothness
|2014–present||Cadillac XTS||410 hp (306 kW) @ 6000 rpm||369 lb⋅ft (500 N⋅m) @ 1900-5600 rpm||link|
|2014–present||Cadillac CTS||420 hp (313 kW) @ 5750 rpm||430 lb⋅ft (583 N⋅m) @ 3500-4500 rpm||link|
The LF4 is a higher-performance variant of the LF3 for use in the Cadillac ATS-V. Changes to the LF3 include:
- Turbochargers with low-inertia titanium-aluminide turbines and vacuum-actuated wastegates for more responsive torque production
- Compressors matched for peak efficiency at peak power levels, for optimal track performance
- Patent-pending low-volume charge-cooling system that optimizes packaging efficiency and maximizes boost pressure
- Lightweight titanium connecting rods that reduce inertia of the rotating assembly, complementing the quick-spooling turbochargers
- Peak boost increased to 18 PSI (from 12 PSI)
- Higher-flow fuel injectors
- Oil pan baffling for better oil flow at high cornering speeds
|2016–present||Cadillac ATS-V, Cadillac ATS-V Coupe||464 hp (346 kW) @ 5850 RPM||445 lb⋅ft (603 N⋅m) @ 3500 RPM||2016 link|
The LFR is a bi-fuel variant of the LFX, although multi-point fuel injection is used for both the gasoline and CNG instead of direct-injection.
|2015–present||Chevrolet Impala Bi-Fuel||CNG 232 hp (173 kW) @ 6000 RPM||CNG 218 lb⋅ft (296 N⋅m) @ 5200 RPM||2016 CNG link|
|Gasoline 258 hp (192 kW) @ 5900 RPM||Gasoline 244 lb⋅ft (331 N⋅m) @ 4800 RPM||2016 Gas link|
The LFY is similar to the LFX, but adds stop-start technology and has improved airflow.
|2018–||Buick Enclave||310 hp (231 kW) @ 6800 rpm||266 lb⋅ft (361 N⋅m) @ 2800 rpm|
|2018–||Chevrolet Traverse||310 hp (231 kW) @ 6800 rpm||266 lb⋅ft (361 N⋅m) @ 2800 rpm|
Starting with 2016 Cadillac models a new generation of High Feature V6s were developed. These new engines have redesigned block architectures with bore centers increased from 103 mm (4.055 in) on prior HFV6 engines to 106 mm (4.173 in) and a redesigned cooling system to target the hottest areas while also facilitating faster warm-up. They also incorporate engine start-stop technology, cylinder-deactivation, 2-stage oil pumps, and updated variable valve timing featuring intermediate park technology for late-intake valve closure. Both engines debuted in the 2016 Cadillac CT6.
Bore and stroke of 86 mm (3.386 in) and 85.8 mm (3.378 in) are used, along with a 9.8:1 compression ratio and twin turbos with titanium-aluminide turbine wheels. Maximum engine speed is 6500 RPM. Premium unleaded fuel is required.
|2016–present||Cadillac CT6||404 hp (301 kW) @ 5700 RPM||400 lb⋅ft (542 N⋅m) @ 2500-5100 RPM||dyno chart|
Along with the increased bore spacing, the new 3.6 L DI V6 has larger bores than before, growing from 94 mm (3.701 in) to 95 mm (3.740 in) with the same 85.8 mm (3.378 in) stroke as the 3.0L LGW, for a displacement of 3649 cc. Intake and exhaust valves are also increased in size along with other changes to the cylinder head. Compression ratio is 11.5:1 and maximum engine speed is 7200 RPM.
|2016–present||Cadillac ATS||335 hp (250 kW) @ 6800 RPM||285 lb⋅ft (386 N⋅m) @ 5300 RPM||2016 link|
|2016–present||Cadillac CT6||335 hp (250 kW) @ 6800 RPM||284 lb⋅ft (385 N⋅m) @ 5300 RPM||2016 link|
|2016–present||Cadillac CTS||335 hp (250 kW) @ 6800 RPM||285 lb⋅ft (386 N⋅m) @ 5300 RPM||2016 link|
|2016–present||Chevrolet Camaro||335 hp (250 kW) @ 6800 RPM||284 lb⋅ft (385 N⋅m) @ 5300 RPM||2016 link|
|2017–present||Buick Lacrosse||310 hp (230 kW) @ 6800 RPM||282 lb⋅ft (382 N⋅m) @ 5200 RPM|
|2018–present||Buick Regal GS||310 hp (230 kW) @ 6800 RPM||282 lb⋅ft (382 N⋅m) @ 5200 RPM|
|2018–present||Holden Commodore||315 hp (235 kW) @ 6800 RPM||281 lb⋅ft (381 N⋅m) @ 5200 RPM|
|2017–present||Cadillac XT5||310 hp (230 kW) @ 6600 RPM||271 lb⋅ft (367 N⋅m) @ 5000 RPM|
|2017–present||GMC Acadia||310 hp (230 kW) @ 6600 RPM||271 lb⋅ft (367 N⋅m) @ 5000 RPM|
|2018–present||Opel Insignia||310 hp (230 kW) @ 6800 RPM||282 lb⋅ft (382 N⋅m) @ 5200 RPM|
|2019||Chevrolet Blazer||305 hp (227 kW) @ 6600 RPM||269 lb⋅ft (365 N⋅m) @ 5000 RPM|
|2017–present||GMC Canyon||308 hp (230 kW) @ 6800 RPM||275 lb⋅ft (373 N⋅m) @ 4000 RPM|
On March 21, 2007 AutoWeek reported that GM was planning to develop a 60-degree V12 based on this engine family to power the top version of Cadillac's upcoming flagship sedan. This Cadillac would essentially have had two 3.6 L High Feature V6s attached crankshaft-to-crankshaft and would have featured high-end technologies including direct injection and cylinder deactivation. If so, the twin-engine would have displaced 7.2 liters, and produced approximately 600 hp (447 kW) and 540 lb⋅ft (732 N⋅m) of torque. Development of the engine was reportedly being conducted in Australia by Holden.
In August, 2008, GM announced that development of the V12 had been cancelled.
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|Wikimedia Commons has media related to General Motors High Feature engine.|
- Technical article from AutoSpeed
- GM Unveils New Direct Injection V-6 - Ward's Auto World
- WebWombat article