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Engines & Power

LS V8 Sport

STS V6

XTS Standard FWD

Standard Engine 3.9L 280 hp V8 3.6L 255 hp V6 3.6L 305 hp V6
Horsepower 280 @ 6000 RPM 255 @ 6500 RPM 305 @ 6800 RPM
Torque (lb-ft) 286 @ 4000 RPM 252 @ 3200 RPM 264 @ 5200 RPM
Valves/Valve Configuration 32/DOHC 24/DOHC 24/DOHC
Displacement (cc) 3934 3564 3564
Bore X Stroke (in.) 3.39 X 3.35 3.70 X 3.37 3.70 X 3.37
Compression Ratio 10.8:1 10.2:1 11.5:1
Fuel Type/System Gasoline/EFI Gasoline/SEFI Gasoline/DI
Turbocharger No No No
Supercharger No No No

Transmissions

LS V8 Sport

STS V6

XTS Standard FWD

Standard Transmission 5-Speed Automatic Overdrive 5-Speed Automatic Overdrive 6-Speed Automatic Overdrive

Payload & Towing

LS V8 Sport

STS V6

XTS Standard FWD

Passenger Volume (cu. ft.) 102.10 102.90 104.20
Cargo Volume (cu. ft.) 13.50 13.80 18.00
Standard Towing (lb.) No data 1000 1000
Max Towing (lb.) No data 1000 1000
Standard Payload (lb.) No data No data No data
Max Payload (lb.) No data No data No data
Standard GVWR (lb.) No data No data 5346
Max GVWR (lb.) No data No data 5346

Braking & Traction

LS V8 Sport

STS V6

XTS Standard FWD

4 Wheel Drive/All Wheel Drive N/A Opt. N/A
ABS Brakes (2 or 4 Wheel) Std. Std. Std.
Automatic Load-Leveling N/A Std. Std.
Electronic Brake Assistance Std. Std. Std.
Limited Slip Differential or Axle N/A Opt. N/A
Locking Differential N/A N/A N/A
Traction Control Std. Std. Std.
Vehicle Stability Control System Opt. Std. Std.
Next Steps

LS V8 Sport

STS V6

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BB05 - 4/18/2014 6:28:27 AM