Models:

Chevrolet Impala LS, LT, LTZ and SS

Body style / driveline:

front-engine, front-drive, 5- / 6-passenger sedan

Construction:

two-sided galvanized steel (except roof); Quiet Steel (F.O.D.)

EPA vehicle class:

large car

Manufacturing location:

Oshawa, Ontario, Canada

Key competitors:

Ford Taurus, Honda Accord, Toyota Camry, Nissan Altima, Chrysler 300C

3500 3.5L V-6 w/VVT (LZE, LZ4)

3.9L V-6 (LGD)

5.3L V-8 (LS4)

Application:

LS, LT

LT, LTZ

SS

Type:

3.5L V-6

3.9L V-6

5.3L V-8

Displacement (cu in / cc):

214 / 3510

237 / 3880

325 / 5327

Bore & stroke (in / mm):

3.90 x 2.99 / 99 x 76

3.90 x 3.31 / 99 x 84

3.78 x 3.62 / 96 x 92

Block material:

cast iron

cast iron

cast aluminum

Cylinder head material:

cast aluminum

cast aluminum

cast aluminum

Valvetrain:

overhead valve, two valves per cylinder, continuously variable valve timing

overhead valve, two valves per cylinder, continuously variable valve timing

overhead valve, two valves per cylinder

Ignition system:

58X; direct iridium electrode tip / iridium core spark plugs, low resistance spark plug wires

58X; direct iridium electrode tip / iridium core spark plugs, low resistance spark plug wires

coil-near-plug, iridium electrode tip / iridium core spark plugs, low resistance spark plug wires

Fuel:

sequential fuel injection

sequential fuel injection

Active Fuel Management; sequential fuel injection

Compression ratio:

9.8:1

9.8:1

10:1

Horsepower (hp/ kW @ rpm):

211 / 157 @ 5800*

224 / 167 @ 5700

303 / 226 @ 5600

Torque (lb-ft / Nm @ rpm):

214 / 290 @ 4000*

235 / 319 @ 3200

323 / 438 @ 40 00

Fuel:

(LZ4) regular unleaded;
(LZE) regular unleaded, E85-capable

regular unleaded; E85 capable

premium recommended but not required

Maximum engine speed (rpm):

6400

6400

6100

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

underfloor catalytic converter, Quick Sync 24X ignition, returnless fuel rail, fast-response O² sensor

EPA-estimated fuel economy (city / hwy):

18 / 29 (gasoline)
14 / 21 (E85)

TBD

16 / 24

Hydra-Matic 4T65, 4-speed automatic

Gear ratios (:1):

First:

2.92

Second:

1.56

Third:

1.00

Fourth:

0.70

Reverse:

2.38

Final drive ratio:

3.5L – 2.86:1
3.9L – 3.29:1
5.3L – 3.29:1

Suspension type:

std with LS, LT: FE1; std with LTZ, SS: FE3

Front:

independent MacPherson strut coil-over-spring, twin-tube dampers with gas-charged valving; coil springs; hollow 30-mm stabilizer bar; FE3 has hollow 34-mm stabilizer bar

Rear:

independent tri-link coil over strut, twin-tube dampers, variable-rate coil springs, 16-mm solid stabilizer bar (FE1); LTZ/SS FE3 has dual rate coil springs, hollow 19.4-mm stabilizer bar

Steering type:

power rack-and-pinion (all models)

Steering ratio:

13.3:1 (all models)

Steering wheel turns, lock-to-lock:

3.5L and 3.9L: 2.4; 5.3L: 2.3

Turning circle, curb-to-curb (ft / m):

38 / 11.6: models with 16-inch or 17-inch wheels
40 / 12.2: models with 18-inch wheels

Type:

four-wheel disc with power assist, vented front, solid rear

Rotor diameter x thickness (mm):

front: 303 x 30;
rear: 278 x 11

ABS

opt. LS, std: LT, LTZ, SS

w/ 3.5L engine

w/ 3.9L engine

w/ 5.3L engine

Wheel size and type:

std: 16 x 6.5- inch , steel wheels, available cast aluminum w/ five-spoke composite wheel cover; opt: same size painted aluminum wheels

2LT:17 x 6.5-inch high-vent steel w/ chromed wheel covers

LTZ: five-spoke 18x 7-inch machined aluminum wheel

std: 18 x 7-inch chrome aluminum

Tires:

P225/60R16

P225/50R17 (2LT)
P235/55R18 (LTZ)

P235/50R18

Wheelbase (in / mm):

110.5 / 2807

Overall length (in / mm):

200.4 / 5091

Overall width (in / mm):

72.9 / 1851

Overall height (in / mm):

58.7 / 1487

Track (in / mm):

(all) front: 62.4 / 1585.5; rear : 61.5 / 1562

Curb weight (lb / kg):

LS: 3555/ 1613
LT w/3.5L: 3555/ 1613
LT w/3.9L: 3649 / 1655
LTZ: 3649 / 1655
SS: 3711 / 1683

Weight distribution (% front / rear):

LS: 62 / 38
LT: 61 / 39
LTZ: 61 / 39
SS: 62 / 38

Drag coefficient:

0.33

front

rear

Seating capacity:

LS, LT, LTZ: 2/3; SS: 2

All models: 3

Headroom (in / mm):

39.4 / 1001

37.8 / 961

Legroom (in / mm):

42.3 / 1076

37.6 / 954

Shoulder room (in / mm):

58.7 / 1490

58.6 / 1488

Hip room (in / mm):

56.4 / 1432

57.2 / 1452

Rear pass-through (in / mm):

15.4 / 390 x 37.1 / 943

EPA passenger volume (cu ft / L):

104.5 / 2959

EPA interior volume (cu ft / L):

123.1 / 3486

Cargo volume (cu ft / L):

18.6 / 526.7

Trailer towing maximum (lb / kg):

1000 / 454

Fuel tank (gal / L):

17.5 / 66.2

Engine oil (qt / L):

3.5L: 4.5 / 4.3; 3.9L: 4.5 / 4.3; 5.3L: 6.0/ 5.7

Cooling system (qt / L):

3.5L: 11.7 / 11.1; 3.9L: 12.2 / 11.5; 5.3L: TBD