Exterior

• Vehicle type: Two-passenger, two-door luxury roadster with one-button retractable hardtop
• Body style: All-steel integral body on welded steel frame
• Length, overall (in/mm): 168.6/4282
• Height, overall (in/mm): 49.1/1247
• Width, overall (in/mm): 72.2/1834
• Wheelbase (in/mm): 108.5/2756
• Overhang, front (in/mm): 29.0/737
• Overhang, rear (in/mm): 30.0/762
• Tread, front (in/mm): 62.0/1575
• Tread, rear (in/mm): 62.1/1577

• Type: 4.2L 32V supercharged Northstar V8
• Engine block: Aluminum with iron inserted main bearing bulkheads
• Cylinder heads: Aluminum
• Valvetrain: Four camshafts with continuously variable valve timing, low friction roller cam followers, four valves per cylinder
• Cam drive: Roller chain
• Induction system: Integral supercharger with liquid-to-air intercooler, intake manifold, and boost bypass valve; this GM designed unit is patent pending
• Engine control system: Closed loop fuel control via mass airflow meter and four oxygen sensors, platinum tipped spark plugs with individual ignition coils, four catalytic converters
• Displacement (cu in/cm3): 258/4228
• Bore x stroke (in/mm): 3.52 x 3.31/89.5 x 84.0
• Compression ratio: 9.0:1
• Horsepower (bhp/kW): 405/302 @ 6400 rpm
• Torque (lb.-ft./Nm): 385/522 @ 4000 rpm

• Type: Longitudinal front engine, rear-wheel drive
• Transmission: Hydramatic 4T60 LE transaxle, Performance Algorithm Shifting system

• Structure: Integral perimeter frame with front-to-back hydroformed rails
• Suspension, front: Independent, aluminum short/long arms, transversely mounted fiberglass spring elements
• Suspension, rear: Independent, aluminum multilink, transversely mounted fiberglass spring elements
• Steering: Rack-and-pinion, variable-assist, speed-sensitive
• Brakes: Behr Racing ventilated and drilled discs with Alcon calipers front and rear, ABS
• Stability enhancement: Four-channel StabiliTrak yaw control system
• Wheels and tires: Michelin PAX System run-flat capability, 19''/650R480 x 245 front, 21''/690R520 x 275 rear