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Home / Buyer's Guide / Brochures / 2008 Impala / Specifications |
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2008 Impala
Overview |
Standard/Optional |
Specifications |
Exterior Colors |
Interior Colors/Styles |
Available Wheels
|
Fuel Economy
| Engine |
Estimated MPG1 city/hwy. |
| 3.5L V6 with Variable Valve Timing using gasoline |
18/29 |
| 3.5L V6 with Variable Valve Timing using E85 fuel |
14/21 |
| 3.9L V6 with Variable Valve Timing and Active Fuel Management™ |
18/28 |
| 3.9L V6 with Variable Valve Timing and Active Fuel Management™ using E85 fuel |
13/20 |
| 5.3L small block V8 with Active Fuel Management™ |
16/24 |
| Exterior (inches) |
| Wheelbase |
110.5 |
| Length |
200.4 |
| Width |
72.9 |
| Height |
58.7 |
| Tread width – front |
62.4 |
| Tread width – rear |
61.5 |
| Interior (inches) |
| Headroom – front |
39.4 |
| Headroom – rear |
37.8 |
| Legroom – front |
42.3 |
| Legroom – rear |
37.6 |
| Shoulder room – front |
58.7 |
| Shoulder room – rear |
58.6 |
| Hip room – front |
56.4 |
| Hip room – rear |
57.2 |
| Passenger volume (cu. ft.) |
104.5 |
| Cargo volume (cu. ft.)1 |
18.6 |
| Interior volume, index (cu. ft.) |
123.1 |
1 Cargo and load capacity limited by weight and distribution.
Capacities
| |
ALL MODELS |
| Seating |
Six passengers with split-bench front seat; five with front buckets |
| Fuel tank capacity, approx. (gal.) |
17 |
| Curb weights, estimated (lbs.) |
| Impala LS |
3,674 |
| Impala LT |
3,674 |
| Impala LTZ |
3,729 |
| Impala SS |
3,790 |
NOTE: Additional equipment required. Maximum trailer weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver. The weight of other optional equipment, passengers, and cargo will reduce the maximum trailer weight your vehicle can tow. See your Chevy dealer for additional details.
Trailering
| Trailering |
| Trailer classification |
Light |
| Gross trailer weight, up to (lbs.) |
1,000 |
| Maximum tongue weight (lbs.) |
100 |
Braking
| |
U.S. Standard |
Metric |
| Front brakes |
| Rotor size (dia. x thick.) |
vented disc with dual-piston calipers
11.93 in. x 1.18 in. |
vented disc with dual-piston calipers
303mm x 30mm |
| Total swept area |
303.0 sq. in. |
1,955.0 sq. cm |
| Rear brakes |
| Rotor size (dia. x thick.) |
solid disc with single-piston calipers
10.94 in. x .43 in. |
solid disc with single-piston calipers
278mm x 11 mm |
| Total swept area |
276.0 sq. in. |
1,781.0 sq. cm |
Engine
| Type |
3.5L V6 |
3.9L V6 |
5.3L small block V8 |
| Displacement (cu. in./liters) |
214/3,510 |
237/3,880 |
325/5,328 |
| Bore x stroke (in.) |
3.90 x 2.99 |
3.90 x 3.31 |
3.78 x 3.62 |
| Bore x stroke (mm) |
99 x 76.0 |
99.0 x 84.0 |
96.0 x 92.0 |
| Compression ratio |
9.8:1 |
9.8:1 |
10.0:1 |
| Block material |
cast-iron |
cast-iron |
cast-aluminum |
| Cylinder head material |
cast-aluminum |
cast-aluminum |
cast-aluminum |
| Valvetrain configuration |
OHV |
OHV |
OHV |
| Valves per cylinder |
2 |
2 |
2 |
| Ignition system |
direct |
direct |
coil-near-plug |
| Lifters |
variable |
variable |
hydraulic roller |
| Cam drive |
chain |
chain |
chain |
Coolant capacity (quarts)
|
11.7 |
12.2 |
12.2 |
| Oil capacity (quarts) |
4.5 |
4.5 |
5.0 |
| Alternator rating (amps) |
105 |
105 |
105 |
| Battery (SAE rating, cca) |
600 |
750 |
625 |
| Recommended unleaded fuel |
87 octane |
87 octane |
92 octane |
| Redline (RPM) |
6400 |
6400 |
6000 |
| Horsepower @ engine RPM |
211 @ 5800 |
233 @ 6000 |
303 @ 5600 |
| Torque (lb.-ft.) @ RPM |
214 @ 4000 |
240 @ 4400 |
323 @ 4400 |
Steering
| |
ALL MODELS |
| Ratio (overall) |
13.3:1 |
| Turns stop-to-stop |
2.3 |
| Turning diameter curb-to-curb (ft.) |
| LS, LT, LTZ |
38.0 |
| SS |
40.0 |
Transmission
| Type |
Automatic Transmission |
| Type (LS, LT, LTZ) |
4-speed automatic, electronically controlled with overdrive |
| RPO |
MX0/M15 (4T65-E) |
| Type (SS) |
4-speed automatic, heavy-duty, electronically controlled with overdrive |
| RPO |
MX0/MN7 (4T65-E) |
| Gear ratios |
| First gear |
2.92 |
| Second gear |
1.57 |
| Third gear |
1.00 |
| Fourth gear |
0.71 |
| Reverse |
2.39 |
| Final drive ratios |
3.5L V6 = 2.86:1
3.9L V6 = 3.29:1
5.3L small block V8 = 2.93:1 |
Converter size (in.):
LS, LT, LTZ
|
9.6 |
Converter size (in.):
SS
|
9.8 |
| Case material |
cast-aluminum |
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