2003 Chevrolet Impala - Specs

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Model Lineup	ENGINES		3.8L 3800 V6
	3400 3.4L V6	3800 3.8L V6	4-spd auto (Hydra-Matic 4T65-E)
Impala Sedan	Standard	Optional	Standard
Impala LS	-	Standard	Standard

Engines	3400 3.4L V6 (LA1)	3800 3.8L V6 (L36)
Application	Sedan	LS
Type	3.4-liter V6	3.8-liter V6
Displacement (cu in / cc)	205 / 3359	231 / 3785
Bore & stroke (in / mm)	3.62 x 3.31 / 92 x 84.1	3.80 x 3.40 / 96.5 x 86.4
Block material	cast iron	cast iron
Cylinder head material	cast aluminum	cast iron
Valvetrain	OHV, two valves per cylinder	OHV, two valves per cylinder
Ignition system	direct	direct
Fuel delivery	sequential fuel injection	sequential fuel injection
Compression ratio	9.5:1	9.4:1
Horsepower (hp / kw @ rpm)	180 / 134 @ 5200	200 / 149 @ 5200
Torque (lb-ft / Nm @ rpm)	205 / 278 @ 4000	225 / 305 @ 4000
Recommended fuel	87 octane	87 octane
Maximum engine speed (rpm)	6000	6000
Estimated fuel economy (mpg city / hwy / combined)	21 / 32 / 27	20 / 30 / 26

Transmission	2003 Chevrolet Impala
Type	four-speed automatic, front-wheel drive
Gear ratios (:1):
First	2.92
Second	1.57
Third	1.00
Fourth	0.71
Reverse	2.39
Final drive ratio	Sedan: 2.86:1
	LS Sedan: 3.05:1

Chassis / Suspension	2003 Chevrolet Impala
Front	independent,MacPherson struts, variable rate coil springs, hollow 32mm stabilizer bar
Rear	independent,MacPherson struts, non-linear coil springs, solid 14mm stabilizer bar
Steering type	power rack-and-pinion for all models
Steering ratio	3400 V6 engine: 15.2:1; 3800 V6 engine: 13.3:1
Steering wheel turns, lock-to-lock	2.9
Turning circle, curb-to-curb (ft / m)	38 / 11.6

Brakes	2003 Chevrolet Impala
Type	power-assisted four-wheel disc, standard ABS for LS
Rotor diameter x thickness (in / mm)	front: 11 x 1.26 / 303 x 32;
	rear: 10.9 x .43 / 278 x 11

Wheels / Tires	Sedan	LS
Standard wheels	16-inch, 5-spoke sport aluminum wheel	16-inch, 5-spoke aluminum wheel
Optional wheel	16-inch custom aluminum wheel	-
Standard tire	P255/60R16 all-season blackwalls	P255/60R16 Touring
Optional tire	P255/60R16 Touring	-

Exterior Dimensions	2003 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
Track (in / mm): Rear	61.1 / 1551
Curb weight (lbs / kg)	Sedan: 3308 / 1501
	LS: 3450 / 1565
Weight distribution (% f / r)	62 / 38
Drag coefficient	.30

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

Capacities	2003 Chevrolet Impala
EPA passenger volume (cu ft / liters)	104 / 2945
EPA interior volume (cu ft / liters)	123.1 / 3485.5
Cargo volume (cu ft / liters)	18.6 / 526.7
Trailer towing (max lbs / kg)	1000 / 454
Fuel tank capacity (gals / liters)	17.0 / 64.4
Engine oil (qts / liters)	3400 V6: 4.5 / 4.3
	3800 V6: 4.3 / 4.1
Engine coolant (qts / liters)	3400 V6: 11.3 / 10.7
	3800 V6: 11.7 / 11.1