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2005 STS Specs


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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

3.66 x 3.3 / 93 x 84

Block material:

cast aluminum

cast aluminum

Cylinder head material:

semi-permanent mold aluminum

semi-permanent mold aluminum

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

(preliminary)


320 / 238 @ 6400

(preliminary)


Torque (lb-ft / Nm @ rpm):

252 / 339 @ 3200 (preliminary)

315 / 459 @ 4400

(preliminary)


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

Estimated fuel economy (mpg city
/ hwy / combined):

TBD

TBD

Transmissions





















































  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

5-speed electronically-controlled
automatic with lockup torque converter, Driver Shift Control,
and Performance Algorithm Liftfoot

Gear ratios (:1):

 

 

 
First:

3.42

3.42

 
Second:

2.21

2.21

 
Third:

1.60

1.60

 
Fourth:

1.00

1.00

 
Fifth:

0.75

0.76

 
Reverse:

3.02

3.02

Final drive ratio:

3.42

RWD:  2.73, 3.23, 3.42

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


  Rear:

hollow, 17-mm diameter

RWD: hollow, 19-mm diameter

AWD: hollow, 24-mm diameter


Steering type:

power-assisted rack and pinion;

steering ratio: 18.2:1,
variable ratio


power-assisted rack and pinion;
ZF Servotronic II variable assist system available;

steering ratio: 18.2:1, variable
ratio


Steering wheel turns, lock-to-lock:

3

3

Turning circle, curb-to-curb (ft
/ m):

V-6  w/17-inch tires: 
36.9/11.5

V-8  w/17-inch tires: 
37.7/11.5

V-8  w/18-inch tires: 
38.8/11.82


Brakes













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.

Optionally
available high-performance European brake linings


Rotor diameter x thickness (in
/ mm):

front: 11.9 x 1.3 / 303 x 32 vented
disc;

rear: 11.7 x 1.0
/ 298 x 26 vented disc


front: 12.7 x 1.3 / 323 x 32 vented
disc;

rear: 12.6 x 1.0
/ 320 x 26 vented disc


Wheels/Tires













Wheel size and type:
17 x 7-inch cast aluminum

17 x 7.5/8.0-inch (split size)
aluminum; or

 


18 x 8-inch flow formed aluminum


Tires:

Michelin V-rated, 235/50R17 &
255/45R17; or

 


Michelin
ALS 235/50R17


 


Michelin
V-rated, 235/50R17 & 255/45R17; or,


Michelin
W-rated, 235/50R18 & 255/45R18; or,


Michelin Pilot Sport, 255/45R18

Bruce

2023 Cadillac CT4-V Blackwing

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Dimensions























































Exterior
 

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;

4.6 automatic w/AWD: 
4230 / 1919


Weight distribution

(% front / rear):

V-6: 52 / 48;

V-8: 54 / 46


Interior

 

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




































EPA total volume

(cu ft):

116.7

EPA trunk volume (cu ft):

13.8

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

Seating capacity (front/rear):

2 / 3

 

 


&nbsp






Bruce

2023 Cadillac CT4-V Blackwing

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huh? STS has an option of a V6? Who the heck would want that?

also, no manual transmission avail? ...Not that I could afford one

I bet the V6 version outruns the current V8 STSes. If I were in the market for a new one, I'd pop for the Northstar I admit, but the V6 models will still be no slouch.

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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