Construction

Unitized welded steel body, aluminum hood

Final assembly location

Flat Rock, Mich.

POWERTRAIN AND CHASSIS

ENGINE                                     

V-8

Type

4.0-liter 60-degree V-6

4.6-liter 90-degree V-8

Manufacturing location

Cologne, Germany

Romeo, Mich.

Configuration

Iron block and aluminum head

Aluminum block and head

Intake manifold

Composite shell-welded with internal runner pack

Composite shell-welded single runner, charge motion control valves

Exhaust manifold

Cast iron

Cast iron

Redline

6,100 rpm

6,250 rpm

Throttle body

65-mm single-bore electronic

55-mm dual-bore electronic

Valvetrain

SOHC, 2 valves per cylinder

SOHC, 3 valves per cylinder, variable camshaft timing

Valve diameter

Intake: 46.0 mm
Exhaust: 39.0mm

Intake: 33.8 mm
Exhaust: 37.5 mm

Pistons

Cast aluminum

Hypereutectic aluminum

Connecting rods

Forged steel

Cracked powdered metal with floating wristpins

Ignition

Distributorless with coil pack

Coil-on-plug, high-thread-insert spark plugs

Bore x stroke

3.95 x 3.32/100.4 x 84.4 mm

3.55 x 3.54/90.2 x 90.0 mm

Displacement

245 cu. in. / 4,009 cc

281 cu. in. / 4,606 cc

Compression ratio

9.7:1

9.8:1

Engine control system

PCM

PCM

Horsepower

210 @ 5,300 rpm

300 @ 5,750 rpm

Horsepower per liter

53

65

Torque

240 lb.-ft. @ 3,500 rpm

320 lb.-ft. @ 4,500 rpm

Recommended fuel

87 octane

87 octane

Fuel capacity

16 gallons

16 gallons

Fuel injection

Electronic returnless sequential

Electronic returnless sequential

Oil capacity

5 quarts with filter

6 quarts with filter

Coolant capacity

12.5 quarts

14.2 quarts

DRIVETRAIN

Layout

Rear-wheel drive

Rear-wheel drive

TRANSMISSION

Standard

5-speed manual
(Tremec T-5)

5-speed manual
(Tremec 3650)

Gear ratios

  1st

3.75:1

3.38:1

  2nd

2.19:1

2.00:1

  3rd

1.41:1

1.32:1

  4th

1.00:1

1.00:1

  5th

0.72:1

0.68:1

  Final Drive

3.31:1

3.55:1

Optional

  1st

3.22:1

3.22:1

  2nd

2.29:1

2.29:1

  3rd

1.54:1

1.54:1

  4th

1.00:1

1.00:1

  5th

0.71:1

0.71:1

  Final Drive

3.31:1 

3.31:1 

SUSPENSION

Front

Reverse-L independent MacPherson strut, 28.6-mm tubular stabilizer bar

Reverse-L independent MacPherson strut, 34-mm tubular stabilizer bar

Rear

3-link solid axle with coil springs and Panhard rod

3-link solid axle with coil springs, Panhard rod and 20-mm solid stabilizer bar

STEERING

Type

Rack and pinion with power assist

Rack and pinion with power assist

Ratio

15.7:1

15.7:1

Turning circle curb-to-curb

33.4 ft.

37.7 ft.

BRAKES

Type

Four-wheel power disc brakes with optional 4-sensor, 4-channel anti-lock braking system (ABS)

Four-wheel power disc brakes with optional
4-sensor, 4-channel anti-lock braking system (ABS)

Front

293 (11.5 in) x 30 mm vented disc, twin-piston 43-mm floating aluminum calipers

316 (12.4 in) x 30 mm vented disc, twin-piston 43-mm floating aluminum calipers

Rear

300 (11.8 in) x 19 mm vented disc, single piston 43 mm floating iron calipers

300 (11.8 in) x 19 mm vented disc, single piston 43 mm floating iron calipers

TIRES AND WHEELS (TYPE, SIZE)

Standard

P215/65R16 A/S
16 x 7.0-inch wheels

P235/55ZR17 Performance A/S
17 x 8.0-inch wheels

Optional

17-inch wheel
18-inch premium aluminum

P235/50ZR18
18-inch polished aluminum wheels or 18-inch premium aluminum

DIMENSIONS (inches unless otherwise noted)

Convertible

EXTERIOR

Wheelbase

107.1

107.1

Overall length

187.6

188.0

Overall width

73.9

73.9

Overall height

55.4

55.7

Track, front/rear

62.4 / 63.0

61.9 / 62.5

INTERIOR

Seating capacity

4

4

Front headroom

38.6

38.8

Front legroom

42.7

42.7

Front shoulder room

55.4

55.4

Front hip room

53.6

53.6

Rear headroom

34.7

36.3

Rear legroom

30.3

30.3

Rear shoulder room

53.4

45.0

Rear hip room

46.8

45.2

WEIGHTS AND CAPACITIES

SAE passenger volume

84.7 cu. ft.

81.6 cu. ft.

Cargo volume

13.1 cu. ft.

9.7 cu. ft.

Maximum towing capacity (properly equipped)

1,000 lbs.

1,000 lbs.

FUEL ECONOMY (city/hwy)

5-speed Automatic

5-speed Manual

4.0-liter V-6

16/24

17/26

4.6-liter V-8

15/22

15/23

BASE CURB WEIGHT (POUNDS)

Manual transmission

3,352

3,356

Automatic transmission

3,345

3,540

Weight distribution (f/r)

55/45

54/46

Power-to-weight ratio

19.4 lbs. per hp

15.2 lbs. per hp

Manual transmission

16.06

11.63

Automatic transmission

16.28

11.75