It uses stiff, constant-rate front springs and variable-rate rear springs to provide higher roll rates and, at the front, a stiffer torque strut design reduces NVH and helps provide a smoother, quieter ride. The packages include 16-inch wheels and P225/60R16 ALS (all-season) Goodyear Integrity radials, specifically developed to provide a quieter ride compared to previous base models. A 10-mm (0.4-inch) wider track also is achieved, as the 16-inch wheels each are moved 5 mm outboard.

FE1 (17-inch wheels): The FE1 suspension also is available with 17-inch wheels and tires for better high-speed control, including the 10-mm-wider track. This combination is standard with vehicles equipped with the 3.9L V-6. The 3.9L engine also receives more powertrain damping to help optimize ride quietness, smoothness and handling. P225/55R17 AL2 (touring) Goodyear Eagle LS2 radials are matched with the 17-inch aluminum wheels to provide enhanced handling capability and more stability in tighter turns.

FE3 (SS): 2007 Impala SS models receive a FE3 suspension, which includes 18-inch W-rated P235/50R18 AL3 (performance) tires and five-spoke alloy wheels, to provide a sporty ride that complements the 5.3L small-block V-8's performance. A 34-mm hollow front stabilizer bar and 18-mm solid rear stabilizer bar combine to provide more roll control than the FE1 or FE2 suspensions. Also, increased stiffness helps reduce body lean and contributes to greater high-speed stability.



2007 Chevrolet Impala - Powertrains

2007 Chevrolet Impala's V-6 engines are as fuel-efficient as they are sophisticated. A 3.5L V-6 is standard in the Impala LS and LT, delivering 211 horsepower (157 kW) and 214 lb.-ft. (290 Nm) of torque - more standard power than previous models and, in fact, more power as a base engine than some key competitors' top (or only) offering.

Vehicles with federal emissions systems in the United States are equipped with the 3.5L engine, which is compatible with E85 ethanol fuel, allowing the vehicle to run on any combination of gasoline and/or E85. Vehicles sold in YF5 ( California ) or NE1 (Northeast) emissions are equipped with PZEV versions of the 3.5L engine. This engine is not E85-compatible. Customers in these areas have the option of ordering E85-compatible engines .

Standard in LTZ and available in LT models is a new 3.9L V-6 that uses variable valve timing and a variable-length intake manifold to help produce 233 horsepower (178 kW) and 240 lb.-ft. (328 Nm) of torque.* The 3.9L engine offers more power and usable torque within its operating range, with 90 percent of peak torque available from 1800 to 5800 rpm. New for 2007, the 3.9L V-6 also features fuel-saving Active Fuel Management technology.

The '06 Impala SS reinstates small-block V-8 power, with the all-new 5.3L all-aluminum V-8 that features Active Fuel Management. Developed exclusively for front-drive applications, the 5.3L engine produces 303 horsepower (226 kW) and 323 lb.-ft. (438 Nm) of torque.

All of 2007 Impala's engines are matched with the Hydra-Matic 4T65 electronically controlled four-speed automatic transmission, which is renowned for its smoothness and durability. A strengthened version is equipped with the 5.3L engine to handle the V-8's torque.


Safety and crash avoidance

Impala offers standard side-curtain air bags, which provide optimum head protection for outboard passengers. The side curtain air bags are mounted in the side roof rails and deploy down to the lower edge of the windows from the A-pillar to the C-pillar. Impala's other safety features include:

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