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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 Melbournemarker, Australia, St. Catharinesmarker in Canadamarker, and Flint Engine Southmarker in Flint, Michiganmarker, United Statesmarker.

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

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 @ 6500 rpm @ 3300 rpm


LP9 Turbo



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 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
2005 Opel Vectra OPC / Opel Signum OPC
2006–2008
2006- Cadillac BLS
2006–2008 Saab 9-3 Aero @ 5500 rpm @ 2000 rpm
2009 @ 5500 rpm @ 2000 rpm
2008 Saab 9-3 Turbo X @ 5500 rpm @ 2000 rpm
2009- Opel Insignia @ 5500 rpm @ 1900 rpm
2009 Saab 9-3 Aero Convertible @ 5500 rpm @ 2000 rpm
2010 Cadillac SRX
2009- Opel Insignia OPC


3.0

LF1

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

Applications:
Year(s) Model Power Torque
2010 Buick LaCrosse
2010 Cadillac CTS @ 7000 rpm @ 5700 rpm
2010 Cadillac SRX @ 6950 rpm @ 5100 rpm
2010 Chevrolet Equinox
2010 GMC Terrain
2010 Holden Commodore estimated 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 at 6600 rpm and at 3200 rpm. Fuel economy 4–6 km/liter in city, 7–9 km/liter on highway.

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 at 6200 rpm and 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.

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- Alfa Romeo 159 @6200 rpm @3800 rpm
2006- Alfa Romeo 159 Sportwagon @6200 rpm @3800 rpm
2005- Alfa Romeo Brera @6200 rpm @3800 rpm
2006- Alfa Romeo Spider @6200 rpm @3800 rpm


3.6

LY7



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 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 version able to run on petrol and autogas has also been produced by Holden in Australia.

Applications:
Year(s) Model Power Torque
2004–2007 Buick Rendezvous CXL/Ultra @ 6000 rpm @ 3500 rpm
2004–2007 Cadillac CTS @ 6200 rpm @ 3100 rpm
2004–2009 Cadillac SRX @ 6500 rpm @ 2800 rpm
2004–2005 Holden VZ Commodore @ 6000 rpm @ 2800 rpm
2006–2007 @ 6000 rpm @ 2800 rpm
2004–2005 Holden VZ Commodore SV6 @ 6500 rpm @ 3200 rpm
2006–2007 @ 6500 rpm @ 3200 rpm
2005–2008 Buick LaCrosse CXS @ 6000 rpm @ 2000 rpm
2005–2007 Cadillac STS @ 6500 rpm @ 3200 rpm
2006–2007 Holden VE Commodore Omega @ 6000 rpm @ 2600 rpm
2008– @ 6500 rpm @ 2400 rpm
2006– Holden VE Commodore SV6 @ 6500 rpm @ 2600 rpm
2006– Holden WM Statesman @ 6500 rpm @ 2600 rpm
2006– Holden WM Caprice @ 6500 rpm @ 2600 rpm
2007–2008 GMC Acadia @ 6600 rpm @ 3200 rpm
2007 Pontiac G6 GTP @ 6300 rpm @ 3200 rpm
2007–2009 Saturn Aura XR @ 6300 rpm @ 3200 rpm
2007–2008 Saturn Outlook XE single exhaust @ 6600 rpm @ 3200 rpm
2007–2008 Saturn Outlook XR dual exhaust @ 6600 rpm @ 3200 rpm
2008 Buick Enclave @ 6600 rpm @ 3200 rpm
2008–2009 Cadillac CTS @ 6400 rpm @ 3100 rpm
2008– Chevrolet Malibu @ 6300 rpm @ 3200 rpm
2008–2009 Chevrolet Equinox Sport @ 6500 rpm @ 2300 rpm
2008–2009 Pontiac G6 GXP @ 6300 rpm @ 3200 rpm
2008–2009 Pontiac G8 @ 6300 rpm @ 2100 rpm
2008–2009 Pontiac Torrent GXP @ 6500 rpm @ 2300 rpm
2008–2009 Saturn Vue XR / Red Line @ 6500 rpm @ 2100 rpm


LLT

The 3.6 liter (3564 cc) LLT is a direct injected version of the LY7. It was first unveiled in May 2006, and was claimed to have 15 percent greater power, 8 percent greater torque, and 3 percent better fuel economy than its port-injected counterpart. It has a compression ratio of 11.4:1, and has been certified by the SAE to produce at 6300 rpm and of torque at 5200 rpm on regular unleaded (87 octane) gasoline. This engine debuted on the 2008 Cadillac STS and CTS. 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 and of torque.

Applications:
Year(s) Model Power Torque
2008– Cadillac CTS @ 6400 rpm @ 5200 rpm
2008– Cadillac STS @ 6300 rpm @ 5200 rpm
2009– Buick Enclave @ 6300 rpm @ 3400 rpm
2009– Chevrolet Traverse single exhaust @ 6300 rpm @ 3400 rpm
2009– Chevrolet Traverse dual exhaust @ 6300 rpm @ 3400 rpm
2009– GMC Acadia
2009– Saturn Outlook single exhaust @ 6300 rpm @ 3400 rpm
2009– Saturn Outlook dual exhaust @ 6300 rpm @ 3400 rpm
2009– Daewoo Veritas
2010 Buick LaCrosse @ 6300 rpm @ 4800 rpm
2010 Chevrolet Camaro @ 6400 rpm @ 5200 rpm
2010 Holden Commodore


LCS

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 at 6100 rpm and of torque at 4800 rpm.Fuel economy 6–8 km/liter in city, 9–11 km/liter on highwayApplications:

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 at 6500 rpm and 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 and of torque. Development of the engine was reportedly being conducted in Australia by Holden. 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.

See also



References

External links




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