GM High Feature engine Totally Explained

Everything about Gm High Feature Engine totally explained

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 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 crankshaft and 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.

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 as well as their own Holden 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.

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 hp (DIN) (191 kW) at 6200 rpm and 237 ft·lbf (322 N·m) 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".
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 soundtrack.
Applications:

Holden 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 L version, this version produces at 6600 rpm and at 3200 rpm. Applications:

2007 Holden Captiva

2007 Opel Antara

LY7

LY7 version was introduced in the 2004 Cadillac CTS sedan. It has a 10.2:1 compression ratio and produces at 6200 rpm and at 3100 rpm. The bore is 3.70 in (94.0 mm) and the stroke is 3.37 in (85.6 mm). In some applications, including the Buick LaCrosse and Holden Commodore, the LY7 has an output of 235 to 262 hp (175 to 195 kW) and 225 to 251 ft·lbf (305 to 340 N·m) depending on the vehicle induction and exhaust system designs. Selected models also include variable intake. The engine weighs as installed.
This engine is produced in North America and Australia.
On the Lambda crossover SUVs (Saturn Outlook, GMC Acadia, and Buick Enclave) it produces and . The Holden Alloytec version has been modified to meet Euro III emissions standards. A version able to run on autogas (LPG) has also been produced. Applications:

2004 Cadillac CTS

2004 Buick Rendezvous CXL/Ultra

2004 Cadillac SRX

2004 Holden VZ Commodore

2005 Buick LaCrosse CXS

2005 Cadillac STS

2006 Holden VE Commodore

2006 Holden WM Statesman

2006 Holden WM Caprice

2007 Saturn Aura XR

2007 Saturn Outlook

2007 Pontiac G6 GTP

2007 GMC Acadia

2008 Buick Enclave

2008 Chevrolet Malibu

2008 Saturn Vue

2008 Pontiac G8

2008 Chevrolet Equinox (Sport model)

2008 Pontiac Torrent (GXP)

LLT

The 3.6 L (3564 cc) LLT is a direct injected version of the LY7. It was first unveiled in May 2006, and was claimed to have 15% greater power, 8% greater torque, and 3% better fuel economy than it's 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 will debut on the 2008 Cadillac STS and CTS (External Link

)(External Link

). GM will use a LLT in all 2009 Lamdba crossovers to allow class-leading fuel economy in light of the new CAFE standards. In the Lambdas, LLT engine produces and of torque. Applications:

2008 Cadillac CTS

2008 Cadillac STS

2009 Chevrolet Traverse Future applications

2009 Saturn Outlook

2009 GMC Acadia

2009 Buick Enclave

2010 Chevrolet Camaro

LCS

The 3.6 L (3564 cc) LCS is the hybrid version of the LLT, using the two-mode system . It will debut in the 2009 Saturn Vue Green Line, where it'll make and of torque. Applications:

2009 Saturn Vue Green Line

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. It generates at 6500 rpm, and at 3300 rpm. Applications:

2005–2007 Cadillac CTS

Suzuki

Suzuki builds the High Feature V6 at its Sagara, Japan plant for the Suzuki XL-7 SUV under license from General Motors. Displacing 3.6 L, this engine produces at 6500 rpm and at 2300 rpm. Applications:

2007 Suzuki XL-7

LP9 Turbo

The LP9 is a 2.8 L turbocharged version is used for the Saab 9-3 and other GM vehicles. It produces EEC at 5500 rpm and between 1800 and 5000 rpm. It has the same bore and stroke as the naturally-aspirated LP1, however the compression ratio is reduced to 9.5:1. There is also other variants available, with EEC and EEC. GM Powertrain Sweden (Saab Automobile Powertrain) has been responsible for the turbocharging of the engine. The engine is built in Port Melbourne, Australia. Applications:

2007 Cadillac BLS

2006 Opel Vectra

2006 Opel Signum

2006 Saab 9-3

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 is reportedly being conducted in Australia by Holden. (External Link

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