Sprint Car Rules

*** Please refer to General Section for rules and regulations applicable to all divisions***

1. Approved tires will be Hoosier 2045 Right Rear, M30 Left Rear, 2030 Right Front & 2010 Left Front. No Bleeders

2. Car Weight: 1,625lbs at all times

3. No cockpit adjusters permitted other than brake biased adjuster and wing adjuster

4. Engine Rules:

   1. 360cid unrestricted

   2. 410cid restricted to 1 7/8” ID with a maximum depth of 1 ½”

   3. Sideboard 30" tall 75" long max

   4. Sideboard cannot extend beyond outside edge of left rear tire

   5. Wicker bills no more than 2"

5. Wings:

   1. Nose wing: 2x3’ max

   2. Main wing: 5x5’ max

6. Tread width 78” max outside to outside

7. Offset measured from center of Input Shaft to outside of tire 44” max

8. Prerace: all cars will go to lineup early with air cleaners off in order to check restrictors; 360 cars will be subject to pump for cid post-race.

9. Postrace: The top 3 finishers will park on the back stretch and stay in cars; then be pushed across the scales in the infield. The top 3 finishers to pass scale tech will push to the front stretch for trophy presentation

10. CNS Will be the exclusive supplier of Tires for the event.

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Questions or Comments?

Please Email us: 

tech@coloradospeedway.com