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2005 Cadillac STS - Specs
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Dimensions and capacities are in inches unless otherwise
specified.
| Overview |
2005
Cadillac STS |
| Model |
2005 Cadillac STS |
| Body style / driveline |
luxury 4-door performance
sedan with rear-wheel drive (V-8 and V-6) or all-wheel
drive (V-8 only at start of production) |
| Construction |
unitized welded steel body
with direct-mounted front cradle and rubber-isolated,
multi-link independent rear suspension assembly |
| Manufacturing location |
LansingGrand River Assembly,
Lansing, Michigan |
| Key competitors |
BMW 5- & 7-Series,
Mercedes-Benz E-Class, Lexus GS/LS 430, Audi A6, Jaguar
S-Type |
| Engine |
3.6L
V-6 |
Northstar
4.6L V-8 |
| Type |
60-degree 3.6L V-6 VVT (variable valve
timing) |
90-degree 4.6L V-8 VVT (variable valve
timing) |
| Displacement (cu in / cc) |
217 / 3564 |
278 / 4565 |
| Bore & stroke (in / mm) |
3.7 x 3.37 / 94 x 85.6 |
3.66 x 3.3 / 93 x 84 |
| Block material |
cast aluminum |
cast aluminum |
| Valvetrain |
semi-permanent mold aluminum |
semi-permanent mold aluminum |
| Cylinder head material |
roller follower DOHC, 4 valves per
cylinder, continuously variable inlet and exhaust cam
phasing |
roller follower DOHC, 4 valves per
cylinder, continuously variable inlet and exhaust cam
phasing |
| Valvetrain |
roller follower DOHC, 4 valves per
cylinder, continuously variable inlet and exhaust cam
phasing |
roller follower DOHC, 4 valves per
cylinder, continuously variable inlet and exhaust cam
phasing |
| Ignition system |
coil-on-plug with extended-life dual
platinum-tipped spark plugs |
coil-on-plug with extended-life dual
platinum-tipped spark plugs |
| Fuel delivery |
returnless sequential fuel injection |
returnless sequential fuel injection |
| Compression ratio |
10.2:1 |
10.5:1 |
| Horsepower (hp / kw @ rpm) |
255 / 190 @ 6500 |
320 / 238 @ 6400 |
| Torque (lb-ft / Nm @ rpm) |
252 / 342 @ 3200 |
315 / 459 @ 4400 |
| Recommended fuel |
87 octane unleaded regular |
91 octane unleaded premium recommended |
| Maximum engine speed (rpm) |
6700 |
6450 |
| Emissions controls |
evaporative system, close-coupled catalytic
converters, positive crankcase ventilation, inlet and
exhaust cam phasers, electronic throttle control feedback
air-fuel-ratio control |
evaporative system, close-coupled catalytic
converters, positive crankcase ventilation, inlet and
exhaust cam phasers, electronic throttle control feedback
air-fuel-ratio control |
| MPG (city / hwy / combined) |
TBD |
TBD |
| MPIG (city / hwy / combined) |
20 / 32 / 24 |
RWD: 20 / 33 / 24 |
| AWD: 18 / 29 / 22 |
| L/100km (city / hwy / comb) |
14.2 / 8.8 / 11.7 |
RWD: 14.2 / 8.6 / 11.6 |
| AWD: 15.8 / 9.7 / 13.0 |
| Transmission |
Hydra-Matic
5L40-E (V-6 )
|
Hydra-Matic
5L50-E (V-8)
|
| Type |
5-speed electronically-controlled
automatic with lockup torque converter, Driver Shift
Control, and Performance Algorithm Liftfoot
|
Hydra-Matic 4T80-E 4-speed electronic
automatic with overdrive and viscous- type converter
clutch
|
| Gear Ratios (:1) |
| 1st |
3.42
|
3.42
|
| 2nd |
2.21
|
2.21
|
| 3rd |
1.60
|
1.60
|
| 4th |
1.00
|
1.00
|
| 5th |
0.75
|
0.76
|
| Reverse |
3.02
|
3.02
|
| Final drive ratio |
3.42
|
RWD: 2.73, 3.23, 3.42
|
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AWD: 3.23
|
| Chassis
/ Suspension |
Standard/Luxury
Package
|
Sport Package
|
| Front |
independent, short/long arm, coil-over
shock, anti-roll bar
|
independent, short/long arm, coil-over
shock, anti-roll bar
|
| Rear |
independent, modified multi-link,
coil springs, automatic load leveling shock absorbers,
anti-roll bar
|
independent, modified multi-link,
coil springs, magnetic ride control, pneumatic load
leveling, anti-roll bar
|
| Traction control system |
full-range
|
full-range
|
| Stabilizer bar: Front |
hollow, 33-mm diameter
|
hollow, 33-mm diameter
|
| Stabilizer bar: Rear |
hollow, 17-mm diameter
|
RWD: hollow, 19-mm diameter
|
|
AWD: hollow, 24-mm diameter
|
| Steering ratio |
18.2:1
|
18.2:1
|
| Steering wheel turns, lock-to-lock |
3
|
3
|
Turning circle, curb-to-curb
(ft / m) |
V-6 with 17-inch tires: 36.9/11.5
|
V8 with 17-inch tires: 37.7/11.5
|
|
V8 with 18-inch tires: 38.8/11.8
|
| Brakes |
Standard/Luxury
Package |
Sport Package |
| Type |
power-assist – vacuum with anti-lock
control, traction control and StabiliTrak stability
control |
power-assist – vacuum with anti-lock
control, traction control, StabiliTrak stability control,
available high-performance European brake linings |
| Rotor diameter
x thickness (in / mm) |
Front
|
11.9 x 1.3 / 303 x
32 vented disc |
12.7 x 1.3 / 323 x
32 vented disc |
|
Rear
|
11.7 x 1.0 / 298 x
26 vented disc |
12.6 x 1.0 / 320 x
26 vented disc |
| Chassis
/ Suspension |
Standard/Luxury
Package
|
Sport Package
|
| Wheel size and type |
17-inch x 7-inch cast aluminum |
17-inch x 7.5 / 8.0-inch (split size) aluminum
|
| 18-inch x 8-inch flow formed aluminum |
| Tires |
Michelin V-rated, 235/50R17
and 255/45R17 |
Michelin V-rated, 235/50R17 and 255/45R17 |
| Michelin W-rated, 235/50R18 and 255/45R18 |
| Michelin ALS 235/50R17 |
Michelin Pilot Sport, 255/45R18 |
| Exterior
Dimensions |
2005
Cadillac STS |
| Wheelbase (in / mm) |
116.4
/ 2956 |
| Overall length (in / mm) |
196.3 / 4986 |
| Overall width (in / mm) |
72.6 /
1844 |
| Overall height (in / mm) |
57.6 / 1463 |
| Track (in / mm) |
Front |
61.8 / 1569 |
| Rear |
62.3 / 1581 |
| Curb weight (lb / kg) |
3.6L automatic |
3857 / 1750 |
| 4.6L automatic |
3921 /
1779 |
| 4.6L automatic with AWD |
4230 /
1919 |
Weight distribution
(% front / rear) |
V-6 |
52 / 48 |
| V-8 |
54 / 46 |
| Interior
Dimensions |
2005
Cadillac STS |
| Seating capacity (front / rear) |
2 / 3 |
| Head room (in / mm) |
Front |
38.7 / 983 |
| Rear |
37.9 /
962 |
| Leg room (in / mm) |
Front |
42.6 / 1082 |
| Rear |
38.3 /
972 |
| Shoulder room (in / mm) |
Front |
58.6 / 1488 |
| Rear |
57.4 /
1458 |
| Hip room (in / mm) |
Front |
54.6 / 1387 |
| Rear |
55.6 /
1412 |
| Capacities |
2004
Cadillac STS |
| EPA total volume (cu ft / L) |
116.7 / 3305 |
| EPA trunk volume (cu ft / L) |
13.8 / 391 |
| Trailer towing maximum (lb / kg) |
1000 / 454 |
| Fuel tank (gal / L) |
17.5 / 66.2 |
| Engine oil (qt / L) |
V-6 |
5 / 4.7 |
| V-8 |
10 / 9.4 |
| Cooling system (qt /
L) |
10.9 /
10.3 |
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