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Car Information

Quantity	British	Metric
Wheelbase (front axle to rear axle)	110.0 (±0.5) inches ⁽¹⁾	2.794 (±0.013) meter
Tread width (max)	60.5 inches ⁽⁴⁾	1.54 meter
Weight/mass (w/out driver)	3450 lbs	1565 kilograms
Body Length	198.2 inches⁽¹⁾ ; 200.7 inches⁽⁴⁾	5.034 meter
Body Width	74.5 inches⁽¹⁾ ; 74.0 inches ⁽²⁾ ; 76-78.5 inches⁽³⁾ ;72.5 inches ⁽⁴⁾
Height	53.5 inches⁽¹⁾⁽²⁾	1.36 meter

Quantity	British Units	Metric Units
Typical torque	550 ft-lbs @ 7,500 rpm (Chevy) ⁽⁴⁾ 550 ft-lbs @ 6,500 rpm (Dodge) ⁽³⁾	746 Nm @ 7,500 rpm (Chevy) 746 Nm @ 6,500 rpm (Dodge)
Engine compression ratio	12:1 (max)
Gear ratios	2.90 to 6.50:1 ^(2);; 2.90 to 6.33:1⁽⁴⁾

Quantity

British Units

Metric Units

Typical torque

550 ft-lbs @ 7,500 rpm (Chevy) ⁽⁴⁾

550 ft-lbs @ 6,500 rpm (Dodge) ⁽³⁾

746 Nm @ 7,500 rpm (Chevy)

746 Nm @ 6,500 rpm (Dodge)

Engine compression ratio

12:1 (max)

Gear ratios

2.90 to 6.50:1 ^(2);; 2.90 to 6.33:1⁽⁴⁾

Also see Race Gear: Comparing Engines for a look at how these parameters compare to a passenger car engine

Component	Made From
Tethers	HS V-12 Vectran
Wheels	Magnetic steel (15" x 9.5")
Front & rear bumper covers	Kevlar/carbon fiber composite

12. 20. 2009: An article on materials science and NASCAR from the MRS Bulletin
08. 04. 2009: The 'Change Password' function works -- finally!
04. 27. 2009: A new Module about gears and a Race Gear module about transmissions have been posted.
04. 14. 2009: A new Crew Chief Note added about Power and Torque and a new Race Gear module Comparing Engines
04. 03. 2009: New NASCAR videos for teaching are now available at www.science360.gov. Look for The Science of Speed series.
04. 02. 2009: See a new announcement about teaching with NASCAR via NASCAR Now.
03. 27. 2009: Teachers - if you experience any problems with registration, please drop a note to admin(at)buildingspeed.org for assistance.
03. 15. 2009: Launch of the new site!