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Technical Elements

NASCAR PR
August 17, 2010 - 11:52am
  NASCAR Sprint Cup NASCAR Nationwide Series NASCAR K&N Pro Series NASCAR Canadian Tire Series NASCAR Whelen Modified/Whelen Southern Modified
Eligible Models Chevrolet Impala SS, Dodge Charger, Ford Fusion, Toyota Camry. 2008-09 Chevrolet Impala SS, Chevrolet Monte Carlo SS, Dodge Charger, Ford Fusion, Toyota Camry. 2007-09 Chevrolet Monte Carlo, Chevrolet Monte Carlo SS, Ford Fusion or Taurus, Dodge Charger or Intrepid, Toyota Camry (Spec Engine is only engine eligible for use with Toyota Camry). 2004-09 Chevrolet Impala SS, Chevrolet Monte Carlo SS, Ford Fusion, Dodge Avenger, Dodge Charger, Pontiac Grand Prix. 2004-10 Chevrolet, Dodge, Ford, Toyota. *Models approved by NASCAR. 1988-2009
Engine Cast Iron 358 cubic inch (max) V8 with aluminum cylinder heads Cast Iron 358 cubic inch (max) V8 with aluminum cylinder heads Cast Iron 358 cu inch V8 with aluminum cylinder heads; Spec Engine – Aluminum block Cast Iron 350-360 cubic inch (max.) V8 with cast iron cylinder heads; Spec Engine – Aluminum block Cast Iron 350-360 cubic inch (max.) V8 with aluminum cylinder heads; Spec Engine – Aluminum block
Horsepower* 850 @ 9000 RPM 750 @ 8400 RPM 625 @ 8000 RPM 550 @ 8000 RPM 625 @ 8000 RPM
Comp Ratio 12:01 12:01 12:01 10:01 12:01
Torque 550 ft./lb.@ 7500 RPM 535 ft./lb.@ 6500 RPM 425 ft/lb@ 7000 RPM 450 ft/lb@ 6500 RPM 500 ft/lb@ 6500 RPM
Induction One 4B Holley Carburetor One 2B Holley 500 CFM One 4B Holley Carburetor One 4B Holley Carburetor One 4B Holley Carburetor
Top Speed 200 MPH (est.) 195 MPH (est.) 170 MPH (est.) 160 MPH (est.) 150 MPH (est.)
Transmission 4-speed 4-speed 4-speed 4-speed 2-speed
Fuel 17.75-gallon capacity 17.75-gallon capacity 22-gallon capacity 22-gallon capacity 24-gallon capacity
Front Suspension Independent coil springs. Upper, lower “A” frames Independent coil springs. Upper, lower “A” frames Independent coil springs. Upper, lower “A” frames Independent coil springs. Upper, lower “A” frames Coil Over Shocks. Upper, lower “A” Frames
Rear Suspension Trailing arms, coils springs, panhard bar Trailing arms, coils springs, panhard bar Trailing arms, coils springs, panhard bar Three-link rear end, coil springs, panhard bar Torque arms, coiling over, shocks and springs, panhard bar
Chassis Rectangular steel tubing w/ integral roll cage Rectangular steel tubing w/integral roll cage Rectangular steel tubing w/ integral roll cage Rectangular steel tubing w/ integral roll cage Rectangular steel tubing w/ integral roll cage
Height 53.5 inches 50.5 inches (min.) 110-inch wheelbase – 51” (min) for steel body; 105-inch wheelbase – 50.5” (min) for steel body; 110-inch and 105-inch wheelbase – 50.5” (min) for composite body 49 inches (min.), 107.5” wheelbase 40 inches (measured 6 inches back from windshield on centerline)
Weight 3,450 lbs w/o driver 3,400 lbs w/o driver 110-inch wheelbase, 3,250 lbs w/o driver; 105-inch wheelbase, 3,300 lbs w/o driver 3,000 lbs w/o driver; 3,080 lbs Spec Engine w/o driver 2,645 w/ driver
Front Air Dam 4.5 inches (max.) 4.0 inches (min.) 4.0 inches 4.0 inches 2.0 inches
Spoiler* NASCAR supplied 57” wide x 5.75” high for all makes 57” wide x 5½” high for steel body; 58” wide by 6½” high for composite body car Injection moulded into rear trunk lid 48” wide x 5” high for all makes
Wheel Base 110 inches 105 inches 105 or 110 inches 107.5 inches 107 inches
Wheels Steel 15” x 9.5” Steel 15” x 10” Steel 15” x 9.5” Steel 15” x 9.5” Steel 15” x 9.5”
Tread Width 61.5 inches (max) 60.5 inches (max) 60.5 inches (max) 75 inches (max) 83.75 inches (max)