stroke is reduced to for a displacement of . It includes continuously variable cam timing (fixed overlap). It has a cast iron block and aluminum heads. Output is at 5800 rpm and at 4000 rpm. Horsepower rating changed for the 2007 model year to at 5800 rpm and torque at 4000 rpm. The Chevrolet Malibu, Pontiac G6, and Saturn Aura became equipped with this engine for 2007 (previously the Malibu and G6 had the non-VVT 3.5 L LX9). In 2008 SAE ratings dropped the horsepower ratings to , keeping torque as is. On Pontiac G6 convertible models, horsepower was rated at . Applications: 2006–2009 Chevrolet Impala 2006–2007 Chevrolet Monte Carlo 2007–2010 Chevrolet Malibu/Chevrolet Malibu Maxx 2007–2009 Saturn Aura 2007–2009 Pontiac G6 2008–2009 Saturn Vue XE AWD (/) Note: GM often refers to this engine in its literature as a "3.5L V6 with Variable Valve Timing". LZE The LZE 3500 is an OHV flexible fuel engine based on the 3.5L LZ4 V6 (it can use either plain gasoline or 15% Gasoline and 85% Ethanol, E85) and includes continuously variable cam timing (fixed overlap). It has a cast iron block and aluminum heads. Bore and stroke is , for a displacement of . Output is at 5800 rpm and at 4000 rpm. Applications: 2006–2011 Chevrolet Impala 2006–2007 Chevrolet Monte Carlo 2009-2010 Chevrolet Malibu 2009-2010 Pontiac G6 3.9 Bore and stroke is for a displacement of . LZ9 The LZ9 3900 has roller rocker arms, a variable length intake manifold, and Variable Cam Timing, a novelty on a pushrod engine. A computer-controlled plenum divider, along with the VVT cam function, improves efficiency across a broader RPM range. It produces and torque, with a wide torque curve. 90% of the torque is available from 1500 rpm to 5500 rpm. Applications: 2006 Pontiac G6 GTP Sedan / Coupe / Convertible 2007 Pontiac G6 GT Sport Package Sedan / Coupe 2007–2009 Pontiac G6 GT Sport Package Convertible 2006–2007 Chevrolet Malibu SS 2006–2011 Chevrolet Impala/Monte Carlo (/ 06 only) 2006–2009 Buick Terraza/Chevrolet Uplander/Pontiac Montana SV6/Saturn Relay 2009–2011 Buick Lucerne ( ( in California-emissions states)) LZ8 The LZ8 3900 has the same Variable Cam Timing technology as the LZ9. The 2007 model year introduces the Active Fuel Management system (formerly known as Displacement on Demand), which can turn off a bank of cylinders under a light load for increased fuel economy. Output is slightly lower than the LZ9