Specs - 2004 Chevrolet Impala Technical Specifications
| Brakes | BASE | LS | SS Supercharged |
|---|
| Brake ABS System | | 4-Wheel | 4-Wheel |
| Disc - Front (Yes or ) | Yes | Yes | Yes |
| Disc - Rear (Yes or ) | Yes | Yes | Yes |
| Front Brake Rotor Diam x Thickness (in) | 11.93 x 1.26 | 11.93 x 1.26 | 11.93 x 1.26 |
| Rear Brake Rotor Diam x Thickness (in) | 10.9 x 0.43 | 10.9 x 0.43 | 10.9 x 0.43 |
| Cargo Area Dimensions | BASE | LS | SS Supercharged |
|---|
| Trunk Volume (ft³) | 18.6 | 18.6 | 18.6 |
| Engine | BASE | LS | SS Supercharged |
|---|
| Displacement | 3.4L/207 | 3.8L/231 | 3.8L/231 |
| Engine Type | Gas V6 | Gas V6 | Gas V6 |
| SAE Net Horsepower @ RPM | 180 @ 5200 | 200 @ 5200 | 240 @ 5200 |
| SAE Net Torque @ RPM | 205 @ 4000 | 225 @ 4000 | 280 @ 3600 |
| Exterior Dimensions | BASE | LS | SS Supercharged |
|---|
| Height, Overall (in) | 57.3 | 57.3 | 57.3 |
| Length, Overall (in) | 200.0 | 200.0 | 200.0 |
| Min Ground Clearance (in) | - TBD - | - TBD - | - TBD - |
| Wheelbase (in) | 110.5 | 110.5 | 110.5 |
| Width, Max w/o mirrors (in) | 73.0 | 73.0 | 73.0 |
| Fuel Tank | BASE | LS | SS Supercharged |
|---|
| Fuel Tank Capacity, Approx (gal) | 17.0 | 17.0 | 17.0 |
| Steering | BASE | LS | SS Supercharged |
|---|
| Lock to Lock Turns (Steering) | 2.74 | 2.38 | 2.30 |
| Steering Type | Pwr Rack & Pinion | Pwr Rack & Pinion | Pwr Rack & Pinion |
| Turning Diameter - Curb to Curb (ft) | 38.0 | 38.0 | 39.6 |
| Suspension | BASE | LS | SS Supercharged |
|---|
| Suspension Type - Front | MacPherson Strut | MacPherson Strut | MacPherson Strut |
| Suspension Type - Rear | MacPherson Strut | MacPherson Strut | MacPherson Strut |
| Suspension Type - Rear (Cont.) | w/Coil Springs | w/Coil Springs | w/Coil Springs |
| Tires | BASE | LS | SS Supercharged |
|---|
| Front Tire Size | P225/60R16 | P225/60R16 | P235/55WR17 |
| Rear Tire Size | P225/60R16 | P225/60R16 | P235/55WR17 |
| Transmission | BASE | LS | SS Supercharged |
|---|
| Drivetrain | Front Wheel Drive | Front Wheel Drive | Front Wheel Drive |
| Trans Description Cont. | Automatic w/OD | Automatic w/OD | Automatic w/OD |
| Trans Type | 4 | 4 | 4 |
| Vehicle | BASE | LS | SS Supercharged |
|---|
| Front Head Room (in) | 39.2 | 39.2 | 39.2 |
| Front Leg Room (in) | 42.2 | 42.2 | 42.2 |
| Front Shoulder Room (in) | 59.0 | 59.0 | 59.0 |
| Passenger Capacity | 6 | 5 | 5 |
| Passenger Volume (ft³) | 104.5 | 104.5 | 104.5 |
| Second Head Room (in) | 36.8 | 36.8 | 36.8 |
| Second Leg Room (in) | 38.4 | 38.4 | 38.4 |
| Second Shoulder Room (in) | 58.9 | 58.9 | 58.9 |
| Weight Information | BASE | LS | SS Supercharged |
|---|
| Base Curb Weight (lbs) | 3465 | 3476 | 3606 |