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High Feature V6
Manufacturer General Motors
Also called Alloytec V6
Production 2004–
Predecessor 54° V6
Dry weight 168 kg (370 lb) (3.6 V6 High Feature engine)[1]

The 3600 LY7 (and derivative LP1) are members of General Motors' new High Feature (or HFV6) engine family of modern DOHC V6s. This new family of engines was introduced in 2004 with the Cadillac CTS. 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.

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, forged connecting rods, a variable 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, Inc.

High Feature V6 engines are produced at Fisherman's Bend in Port Melbourne, Australia, St. Catharines in Canada, and Flint Engine South in Flint, Michigan, United States.

Contents

History

The HFV6 was first designed, tested and produced in a joint team by Cadillac and Holden. A majority of design into the new alloy construction, transmission pairing and first use in production were all undertaken in Detroit (and manufactured in St Catherines). Holden had the job of developing smaller engines (Holden 3.2, LP1 and 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. North America and Australia remain the only two places that manufacture the HFV6.

2.8

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LP1

A 2.8 L (2792 cc) LP1 variant was introduced in the 2005 Cadillac CTS. It has a 3.50 in (89.0 mm) bore, a 2.94 in (74.8 mm) stroke, and a 10.0:1 compression ratio. The LP1 was built in Saint Catharines, Ontario.

Applications:

Year(s) Model Power Torque
2005–2007 Cadillac CTS 210 hp (157 kW) @ 6500 rpm 194 lb·ft (263 N·m) @ 3300 rpm

LP9 Turbo

2.8 L turbo V6 in a 2006 Saab 9-3

The LP9 is a 2.8 L turbocharged version is used for the Saab 9-3 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. A twin-turbo ethanol-powered variant with 400 PS (294 kW; 395 hp) was developed for the Saab Aero-X concept car. GM Powertrain Sweden (Saab Automobile Powertrain) has been responsible for the turbocharging of the engine. The engine is built in Port Melbourne, Australia.

Applications:

Year(s) Model Power Torque
2005 Opel Vectra / Opel Signum 227 hp (169 kW; 230 PS) 243 ft·lbf (329 N·m)
2005 Opel Vectra OPC / Opel Signum OPC 247 hp (184 kW; 250 PS) 258 ft·lbf (350 N·m)
2006–2008 276 hp (206 kW; 280 PS) 262 ft·lbf (355 N·m)
2006-2009 Cadillac BLS 252 hp (188 kW; 255 PS) 258 ft·lbf (350 N·m)
2006–2008 Saab 9-3 Aero 250 hp (186 kW; 253 PS) @ 5500 rpm 258 ft·lbf (350 N·m) @ 2000 rpm
2009 280 hp (209 kW; 284 PS) @ 5500 rpm 295 ft·lbf (400 N·m) @ 2000 rpm
2008 Saab 9-3 Turbo X 280 hp (209 kW; 284 PS) @ 5500 rpm 295 ft·lbf (400 N·m) @ 2000 rpm
2009-present Opel Insignia 256 hp (191 kW; 260 PS) @ 5500 rpm 258 ft·lbf (350 N·m) @ 1900 rpm
2009 Saab 9-3 Aero Convertible 280 hp (209 kW; 284 PS) @ 5500 rpm 273 ft·lbf (370 N·m) @ 2000 rpm
2010 Cadillac SRX 300 hp (224 kW; 304 PS) 295 ft·lbf (400 N·m)
2009-present Opel Insignia OPC 325 hp (242 kW; 330 PS) 320 ft·lbf (434 N·m)

3.0

LF1

The LF1 is a 3.0 litre version equipped with Direct Injection.

Applications:

Year(s) Model Power Torque
2010 Buick LaCrosse 255 hp (190 kW; 259 PS) 217 ft·lbf (294 N·m)
2010 Cadillac CTS 270 hp (201 kW; 274 PS) @ 7000 rpm 223 ft·lbf (302 N·m) @ 5700 rpm
2010 Cadillac SRX[2] 265 hp (198 kW; 269 PS) @ 6950 rpm 223 ft·lbf (302 N·m) @ 5100 rpm
2010 Chevrolet Equinox 264 hp (197 kW; 268 PS) 222 ft·lbf (301 N·m)
2010 GMC Terrain 264 hp (197 kW; 268 PS) 222 ft·lbf (301 N·m)
2010 Holden Commodore 255 hp (190 kW; 259 PS) estimated 213 ft·lbf (289 N·m) estimated

3.2

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; 230 PS) at 6600 rpm and 297 N·m (219 lb·ft) at 3200 rpm. Fuel economy 4–6 km/liter in city, 7–9 km/liter on highway.[citation needed]

Applications:

Alfa Romeo

Alfa Romeo uses the High Feature engine design, though with many modifications, as the JTS V6. The Alfa unit features lean-burn technology as on many other engines from the company. It displaces 3.2 L (3195 cc) and has an output of 260 PS (190 kW; 260 hp) at 6200 rpm and 322 N·m (237 ft·lbf) torque, with gasoline direct injection allowing a high compression ratio of 11.25:1. The engine is also equipped with cam-phasing on both inlet and exhaust side, thus the name "TwinPhaser". Fuel economy 4–6 km/liter in city, 8–9 km/liter on highway.[citation needed]

Alfa Romeo only acquires the core designs and productions of the HFV6. It is then taken to their factory and modified for their performance, fuel economy and sound characteristics.

Applications:

Year(s) Model Power Torque
2005-present Alfa Romeo 159 191 kW (260 PS; 256 hp) @6200 rpm 322 N·m (237 lb·ft) @3800 rpm
2006-present Alfa Romeo 159 Sportwagon 191 kW (260 PS; 256 hp) @6200 rpm 322 N·m (237 lb·ft) @3800 rpm
2005-present Alfa Romeo Brera 191 kW (260 PS; 256 hp) @6200 rpm 322 N·m (237 lb·ft) @3800 rpm
2006-present Alfa Romeo Spider 191 kW (260 PS; 256 hp) @6200 rpm 322 N·m (237 lb·ft) @3800 rpm

3.6

LY7

LY7 V6 engine in a Cadillac STS.
Alloytec V6 engine in a Holden VZ Commodore.
LPG Alloytec V6 engine in a Holden VE Commodore.

The 3.6 L (3564 cc) LY7 version was introduced in the 2004 Cadillac CTS sedan. It has a 10.2:1 compression ratio, a bore of 3.70 in (94.0 mm) and a stroke of 3.37 in (85.6 mm). Lower powered versions only have variable cam phasing on the inlet cam. Selected models also include variable intake. The engine weighs 370 lb (170 kg) as installed.

This engine is produced in several locations, including Saint Catharines (Ontario), Flint Engine South (Flint,MI), Melbourne (Australia), Ramos Arizpe (Mexico), and Suzuki (Japan).

A dual fuel 235 hp (175 kW) version able to run on petrol and autogas (LPG) has also been produced by Holden in Australia.

Applications:[3]

Year(s) Model Power Torque
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) @ 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
2004–2005 Holden VZ Commodore 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 VE Commodore SV6 261 hp (195 kW) @ 6500 rpm 251 lb·ft (340 N·m) @ 2600 rpm
2006–2009 Holden WM Statesman 262 hp (195 kW) @ 6500 rpm 250 lb·ft (339 N·m) @ 2600 rpm
2006–2009 Holden WM Caprice 262 hp (195 kW) @ 6500 rpm 250 lb·ft (339 N·m) @ 2600 rpm
2006–present 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
2008–2009 Cadillac CTS 263 hp (196 kW) @ 6400 rpm 253 lb·ft (343 N·m) @ 3100 rpm
2008–present 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

LLT

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 11.4:1, 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.[4][5] GM will use 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.[6][7][8]

Applications:

Year(s) Model Power Torque
2008–present Cadillac CTS 304 hp (227 kW) @ 6400 rpm 273 lb·ft (370 N·m) @ 5200 rpm
2008–present Cadillac STS 302 hp (225 kW) @ 6300 rpm 272 lb·ft (369 N·m) @ 5200 rpm
2009–present Buick Enclave 288 hp (215 kW) @ 6300 rpm 270 lb·ft (366 N·m) @ 3400 rpm
2009–present Chevrolet Traverse single exhaust 281 hp (210 kW) @ 6300 rpm 266 lb·ft (361 N·m) @ 3400 rpm
2009–present Chevrolet Traverse dual exhaust 288 hp (215 kW) @ 6300 rpm 270 lb·ft (366 N·m) @ 3400 rpm
2009–present GMC Acadia 288 hp (215 kW) 270 lb·ft (366 N·m)
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–present Daewoo Veritas
2010 Buick LaCrosse CXS 280 hp (210 kW) @ 6300 rpm 259 lb·ft (351 N·m) @ 4800 rpm
2010 Chevrolet Camaro 304 hp (227 kW) @ 6400 rpm 273 lb·ft (370 N·m) @ 5200 rpm
2009-Present Holden VE Commodore SV6 281 hp (210 kW) @ 6400 rpm 258 lb·ft (350 N·m) @ 2900 rpm
2009-Present Holden WM Statesman 281 hp (210 kW) @ 6400 rpm 258 lb·ft (350 N·m) @ 2900 rpm
2009-Present Holden WM Caprice 281 hp (210 kW) @ 6400 rpm 258 lb·ft (350 N·m) @ 2900 rpm

LCS

The 3.6 litre (3564 cc) LCS is derived from the direct-injected LLT for use in hybrids, using the two-mode system [9]. 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. [10] Fuel economy 6–8 km/liter in city, 9–11 km/liter on highway Applications:

Suzuki

Suzuki builds the High Feature V6 at its Sagara, Japan plant for the Suzuki XL7 SUV under license from General Motors. Displacing 3.6 L, this engine produces 252 hp (188 kW) at 6500 rpm and 243 lb·ft (329 N·m) at 2300 rpm. Fuel economy 4–6 km/liter in city, 7–9 km/liter.

Applications:

V12

On March 21, 2007 it was reported by AutoWeek that GM is planning to develop a 60-degree V12 based on this engine family to power the top version of Cadillac's upcoming flagship sedan. This engine would essentially consist of two 3.6 L High Feature V6s attached end-to-end on a single crankshaft, and would feature such high-end technologies as direct injection and cylinder deactivation. If so, the engine would displace 7.2 liters, and produce 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. [11] Fuel economy 2–4 km/liter in city,5–7 km/liter.

In August, 2008, GM announced that development of the V12 had been canceled. [12]

See also

References

External links


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