Rules Updates 04-17-2017

Super Late Models
Current restrictor size for the Equalizer engine is 1.150

Late Models
The 50lb weight requirement for fabricated front stubs has been deleted. No additional weight on fabricated stubs is required.

Pro Truck & Super Stock Rules Clarifications

The CNS Tech department has made some clarifications and corrections to the Pro Truck and Super Stocks rules documents. The summary of the changes are as follows:

Clarification on Pro Truck weight.
20.1 Chevrolet engine option 1 minimum weight before race 2900lbs(not 2950lbs. as stated in the previous rules document)

Clarification for Super Stock Leaf Spring Cars
RULE: 25.3 Leaf spring cars only, minimum weight with driver before the race must be 3650 lbs.Maximum left side weight is 52%. 602 crate motor weight 3600 with driver before race.

Please download the latest rules documents here.

Colorado National Speedway to host Driver Appreciation BBQ at Last Pre-Season Practice

  • When: Saturday, March 25, 2017
  • Where: The Pits at Colorado National Speedway
  • Time: 4:30pm until ???

Attention CNS Drivers and crew! In appreciation for everything our Drivers, their Families and their Crews do for the Track, Colorado National Speedway would like to invite you to a pre-season kick-off BBQ! Starting at 4:30pm on Saturday, March 25, CNS will open the Pit Concessions booth and serve a complimentary Famous Dave’s BBQ dinner for all Drivers, their Families, and their Crew members. Food, Soft Drinks, Cold Brews, and other treats will be provided compliments of CNS and our partners. We’ll also give away some prizes and swag, so mark your calendars for the 25th and come hungry! We can’t wait to see you!

March 11th Practice Cancelled

Practice for Saturday, March 11th has been canceled due to the rain. Tires and Fuel will be available for sale from 11am to 3pm. See you next week!

Amendments to the 2016 F-8 Rules effective Jan 1, 2017

  1. 25lb must be bolted to the front stub on fabricated stub cars. Fabricated stubs must maintain same geometry as original. 
  2. No penalty for fabricated rear clip. 
  3. Any year body is permitted. No lightweight or carbon fiber components. Body must resemble factory body (no dirt car wedge bodies). Mixing year and make of body parts is allowed. 
  4. Full factory firewall must be used. 
  5. Aluminum water pump is allowed. 
  6. 602 crate engine 3100 lbs. 604 crate engine 3200 lbs

Figure 8 Division Rules Meeting

There will be a Figure 8 meeting which will be held at Taco Loco in Dacono on highway 52 just of east of Jerry D’s (Downtown Dacono). The meeting will be this Thursday December 29th 2016 at 6PM. The meeting will be for the purpose of discussing changes and proposals for the Figure 8 division for the 2017 season and beyond. Please plan to attend to have your voice heard.

Grand American Modified Rule Refinements

After receiving feedback from many of the Grand American Modified drivers and teams we will be refining the rules as follows. Bump stops will be legal in the GAM division. And the overwhelming response was to NOT allow the 525 crate motor in the Grand American Modified division therefore we will also be making that change. We want to thank everyone who took the time to help us refine the rules for the GAM division.

Supermodifieds at CNS in 2017

The CNS Supermodifieds will be running a limited schedule for 2017. The rules will remain essentially the same as last year except the cars will be tech’d and officiated by the CNS staff. We hope to have the schedule out by the first of the year. If you have any general questions or feedback please contact If you have tech questions you can email Please keep an on on this Tech News section of the CNS website for…

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Grand American Modified Rules Adjustments for 2017

Here are the results of the Rules Committee meeting in regard to changes and amendments to the Grand American Modified rules for the 2017 season at CNS. Aluminum cylinder heads are allowed with 25 pounds added to each frame rail at the dog-leg (on both sides). You no longer need to add 50 pounds to your total weight.   GM CT525 legal to CNS Super Late Model specifications will be allowed. In addition to the 50 lbs requirement for aluminum…

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Results of Rules Committee Meeting

Here are the results of the Rules Committee meeting in regard to changes and amendments to the rules for the 2017 season at CNS. General Rules 1. The penalty for a major rule infraction will be as follows: loss of points and purse for the night and 100 points subtracted from the seasons point total. An major rule infraction is defined as intentional infraction that may result in a significant performance advantage. An example would be any type of tire…

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