Canadian Manufacturing

Oshawa-built Lacrosse gets a boost

by Canadian Manufacturing Daily Staff   

Procurement Automotive buick engine General Motors Co. Manufacturing

GM releases details on the 2012 Buick Lacrosse and its revamped engine

OSHAWA—The 2012 Buick LaCrosse will be available with a new, more powerful and fuel-efficient version of its direct-injected 3.6L V-6 engine, according to its manufacturer, General Motors (GM).

The 3.6L V-6 with variable valve timing has a SAE-certified 303 horsepower on the front-wheel-drive LaCrosse, an increase of 23 hp and 264 lb.-ft. of torque with no loss in fuel efficiency (12.1 L/100km in the city and 7.3 L/100km on the highway).

An all-wheel-drive version, rated at 12.7 L/100km in the city and 7.7 L/100km on the highway, will also be available.

GM says the lighter-weight aluminum alloy V-6 is more powerful than its predecessor because its cylinder head design has a revised intake port design, enhancing airflow to the combustion chambers. Larger-diameter intake valves in the heads and new, longer-duration intake camshafts help provide the engine’s boost in horsepower.


The engine retains direct fuel injection, enabling greater combustion efficiency, but uses a new fuel pump and an isolated fuel rail.

Direct injection also delivers reduced emissions, particularly on cold starts, where hydrocarbon emissions are cut by about 25 per cent.


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