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2004 Chevrolet Impala - Specs

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2004  Chevrolet  Impala

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Visit Chevrolet for more information on the Chevrolet Impala.

Engine Specs
Transmission

Chassis Specs
Exterior
Interior

Capacities



Dimensions and capacities are in inches unless otherwise specified.

Powertrain / Chassis 3400 3.4L V-6 (LA1) 3800 3.8L Series II V-6 (L36) 3800 3.8L Supercharged Series II V-6 (L67)
Application sedan opt on sedan
std on LS
SS
Type 3.4L V-6 3.8L V-6 3.8L Supercharged V-6
Displacement (cu in / cc) 207 / 3350 231 / 3791 231 / 3791
Bore & stroke (in / mm) 3.62 x 3.31 / 92 x 84 3.80 x 3.40 / 96.5 x 86.4 3.80 x 3.40 / 96.5 x 86.4
Block material cast iron cast iron cast iron
Cylinder head material cast aluminum cast iron cast iron
Valvetrain OHV, 2 valves per cylinder OHV, 2 valves per cylinder OHV, 2 valves per cylinder
Ignition system direct direct direct
Fuel delivery sequential fuel injection sequential fuel injection sequential fuel injection
Compression ratio 9.5:1 9.4:1 8.5:1
Horsepower (hp / kw @ rpm) 180 / 134 @ 5200 200 / 149 @ 5200 240 / 179 @ 5200
Torque (lb-ft / Nm @ rpm) 205 / 278 @ 4000 225 / 305 @ 4000 280 / 380 @ 3600
Recommended fuel 87 octane 87 octane 92 octane required
Maximum engine speed (rpm) 6000 6000 6000
Emissions controls evaporative system with catalytic converter/ EGR/PCV evaporative system with catalytic converter/ EGR/PCV evaporative system with catalytic converter/ EGR/PCV
Estimated fuel economy
(mpg city / hwy / combined)
21 / 32 / 27 20 / 30 / 26 TBD

Transmission 2004 Chevrolet Impala
Type Hydra-Matic 4T65-E, 4-speed automatic, front-wheel drive
Gear Ratios (:1)
   1st
2.92
   2nd 1.57
   3rd 1.00
   4th 0.71
   5th 2.39
Final drive ratio LA1: 2.86:1; L36: 3.05:1; L36 (police): 3.29:1; L67: 2.93:1

Chassis / Suspension 2004 Chevrolet Impala
Front independent MacPherson struts, variable rate coil springs,
hollow 32-mm stabilizer bar (SS has hollow 34-mm stabilizer bar)
Rear
independent MacPherson struts, non-linear coil springs, solid 14-mm stabilizer bar (SS has dual rate coil springs, hollow 19.5-mm stabilizer bar)
Steering type power rack-and-pinion for all models
Steering ratio 3400 V-6: 15.2:1; 3800 V-6: 13.2:1
Steering wheel turns, lock-to-lock 3400 V-6: 2.74; 3800 V-6: 2.38; supercharged: 2.30
Turning diameter, curb-to-curb (ft / m) 3400 V-6, 3800 V-6: 38 / 11.6; supercharged: 39.6 / 12.1

Brakes 2004 Chevrolet Impala
Type power-assisted 4-wheel disc, standard ABS for LS and SS
Rotor diameter x thickness (in / mm) front: 11.93 x 1.26 / 303 x 32
rear: 10.9 x .43 / 278 x 11

Wheels and Tires 2004 Chevrolet Impala
Wheel size and type Sedan Standard - 16-inch, steel wheel w/ wheel cover
Optional - 16-inch custom aluminum wheel
LS Standard - 16-inch, 5-spoke aluminum wheel
SS Standard - 17-inch, diamond-cut aluminum
Tires Sedan Standard - P225/60R16 all-season blackwalls
Optional - P225/60R16 touring
LS P225/60R16 touring
SS P235/55R17 W-rated

Exterior Dimensions 2004 Chevrolet Impala
Wheelbase (in / mm) 110.5 / 2807
Overall length (in / mm) 200 / 5080
Overall width (in / mm) 73 / 1854
Overall height (in / mm) 57.3 / 1456
Track (in / mm) Front 62 / 1574
Rear 61.1 / 1551
Curb weight (lb / kg) Sedan 3606 / 1636
LS 3476 / 1577
SS 3606 / 1636

Interior Dimensions 2004 Chevrolet Impala
Seating capacity
(front / rear)
Sedan 3 / 3
LS 2 / 3
SS 2 / 3
Head room (in / mm) Front 39.2 / 996
Rear 36.8 / 935
Leg room (in / mm) Front 42.2 / 1072
Rear 38.4 / 975
Shoulder room
(in / mm)
Front 59 / 1499
Rear 58.9 / 1496
Hip room (in / mm) Front 56.5 / 1435
Rear 55.7 / 1415

Capacities 2004 Chevrolet Impala
EPA interior 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 / 64.4
Engine oil (qt / L) 3400 V-6 4.5 / 4.3
3800 V-6 4.3 / 4.1
Cooling system (qt / L) 3400 V-6 11.7 / 11.1
3800 V-6 12.2 / 11.5