2013 OFFICIAL CNS RULES
- General Rules (all divisions rev 5-6-2013)
- Super Late Models (rev 1-24-2013)
- Late Models Formerly Sportsman (rev 6-13-2013)
- Pro Trucks (rev 1-30-2013)
- Grand American Modifieds (rev 3-21-2013)
- Super Stocks (rev 5-6-2013)
- Figure 8s (rev 1-16-2013)
- Pure Stocks (rev 5-6-2013) for more info on the new Pure Stock Division call John Wittar 303-359-6026 or
Adam Hilton 720-298-7183 - Trains (rev 1-16-2013)
- DEMOX (rev 03-28-2013)
- XTREME Trucks (for more info click here)
IMPORTANT CNS FORMS - 
2013 CNS Vehicle Registration Form 2013 CNS Rookie Registration Form 2013 Train Registration Form
Bookmark this page if you are a race driver or car owner at CNS. This is the page where you will find all the latest news regarding the operations at CNS that effect racers and car owners. Please check this section weekly so that you are up to date on the changes, and updates at Colorado National Speedway.
We have created a easy to remember weblink for this section at: http://coloradospeedway.com/tech
(please take note of it).
Thank you to all drivers and race teams. CNS is proud to announce that the oval track show and 2012 registration was a huge success! This year, we had more racers register at the show than in the past 3 years! Colorado National Speedway staff and owners want to thank everyone for their positive input and support. Let’s all have a fun and safe 2012 race season.
Thanks, we couldn’t do it without all of you!
CNS Management
All 2010 GAM rules apply, except for the following changes:
1) 8” Hoosier slicks F75 right side and F53 left side.
2) 56% left side max weight.
We expect no other changes for the 2012 season, but stayed tuned to CNS tech news for further updates
John Witthar - Race Director
Paul has been associated with the track since it opened. In fact, Paul was the first person to race a lap on our track way back in 1965. We believe his knowledge and experience will be a great asset to our team. Come on out and say hi to Paul at the trade show.
CNS Management
2012 race season scheduling requires changes to be made in the pit stall rental policy. There will no longer be multiple assignments to each pit stall. Pit stalls that were assigned in 2011 are no longer available to the teams which held them in 2011.
NOTE: (Teams which have rented specific stalls for numerous years will be recognized and spaces will be held for those teams through Sunday January 29, 2012, Please reserve your pit stall at the trade show)
Pricing:
-$75.00 for an assigned pit stall for the 2012 race season. Due to limited pit stalls, we are prioritizing assignment as follows: Late Models, Sportsman then the remaining teams which had an assigned pit stall in 2011.
-$50.00 for a limited guaranteed floating pit stall for 2012 race season. Teams wanting to have a guaranteed pit stall on their scheduled night of racing can now purchase a $50.00 floating pit rental. These preferred spots will be coned off and made available between pit gate opening through 1:00 pm when the track becomes hot. Race teams who have purchased a floating pit stall will be directed to a preferred stall by our security team.
-All assigned and floating pit stalls will be coned off. All remaining open stalls will be filled on a first come first serve basis.
Please speak with us to reserve your pit stall at the trade show:
Oval Track and High Performance Trade and Swap Meet
Friday Jan 27th & Saturday Jan 28th
Boulder County Fairgrounds
9595 Nelson Rd, Longmont CO 80501
Thank you for your cooperation and we look forward to a great 2012 season.
To help expedite the registration process, we would greatly appreciate if all drivers would print the registration forms and fill them out prior to the trade show. Please find all necessary forms at the top of the CNS Tech News page including Rookie registration and Train registration. This will greatly reduce the wait time for all registrants at the trade show. Please submit your completed forms and payments to the CNS representatives at the CNS booth at:
Note: The CNS Booth will be open Saturday Jan 28th from 8AM - 5PM
Oval Track and High Performance Trade and Swap Meet
Friday Jan 27th & Saturday Jan 28th
Boulder County Fairgrounds
9595 Nelson Rd, Longmont CO 80501
Also, if you haven't registered for the driver polls, please submit the following info to
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Name:
Division(s):
Car Number:
email address:
If you have any questions please feel free to contact me at This e-mail address is being protected from spambots. You need JavaScript enabled to view it
John Witthar - Race Director
ALL 2011 tires will be permitted in competition for the first 2 races for each division of the 2012 season.
We expect no other changes for the 2012 season, but stayed tuned to CNS tech news for further updates.
If you have any questions please feel free to contact me at This e-mail address is being protected from spambots. You need JavaScript enabled to view it
John Witthar - Race Director
ALL 2011 tires will be permitted in competition for the first 2 races for each division of the 2012 season.
We expect no other changes for the 2012 season, but stayed tuned to CNS tech news for further updates.
If you have any questions please feel free to contact me at This e-mail address is being protected from spambots. You need JavaScript enabled to view it
John Witthar - Race Director
1) Referring to the 2011 rule book under FRAME CLEARANCE:
A minimum ground clearance of 5 inches must be maintained on any part of the frame with driver.
This will no longer be enforced in tech. Ride height will be monitored by “on track” performance during competition. Any Sportsman race car that bottoms out during competition for 3 consecutive laps will be black flagged.
2) Side mirrors will be permitted and must not protrude beyond the vehicle's door panel and must not be constructed of glass.
3) Under-slung (Late Model style) rear clips will be permitted in the Sportsman division.
4) The old Sportsman firewall rule will be omitted. Cars must have the old style type front full firewall or Late Model style foot box and interior. Late Model style foot box must be totally enclosed and made of steel. Right side interior panel can taper upward to the right side door bar. A metal firewall must separate the driver from the trunk area. Driver's compartment must be totally sealed from the underside of the vehicle for fire and exhaust fume protection.
5) Sportsman will be running on a Hoosier F53 & F75.
ALL 2011 tires will be permitted in competition for the first 2 races for each division of the 2012 season.
We expect no other changes for the 2012 season, but stayed tuned to CNS tech news for further updates.
If you have any questions please feel free to contact me at
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
John Witthar - Race Director
CNS is pleased to anounce that the superstock division will be allowed to run the 602 crate engine for 2012. Infomation and data from the CNS web site polling, track officials and management, have made this decision. The 602 engine is in addtion to current engines from 2011 season. Good luck in 2012.
The 602 crate engine may not run Exhaust Headers.
The 602 Crate engine will run a 2 Barrel Carburetor and adapter, Please refer to rule attachment below.
Please do not hesitate to email or call if you need any more information.
12 – CARBURETOR:
12-1 Stock Holly #R4412 2-bl 500 cfm is the only legal Carburetor and must meet Holley specifications.
12-2 Mandatory Adapter Kit – Unaltered Moroso part #64966. Only one spacer will be allowed between the intake and carburetor. Carburetor spacer must be used as manufactured with no alterations.
12-3 No polishing, grinding, or drilling (i.e. Metering block) of holes allowed.
12-4 Choke, blade, and rod may be removed.
12-5 Size and shape of boosters must not be altered.
12-6 Booster height must remain stock.
12-7 Jets of any size may be used.
12-8 Venturi area must not be altered in any way.
12-9 Casting ring must remain completely visible and may not be removed.
12-10 Base plate must not be altered in size or shape.
12-11 No holes may be drilled in the base plate.
12-12 Stock butterflies must not be thinned or tapered.
12-13 Screw ends may be cut even with the shaft, but screw heads must remain stock.
12-14 Throttle shaft must remain standard and must not be thinned, cut or nicked in any matter.
12-15 Maximum gasket thickness shall be .065.
12-16 Only one round dry type paper air filter element a maximum of 14” diameter by 3” tall is permitted.
No treating or soaking.
12-17 No electric fuel pumps allowed.
12-18 Only open type sandwich style air cleaners are allowed with a maximum diameter of 14”. Offset air cleaners are approved for distributor clearance only. No cool air boxes allowed or forced air induction. No air deflecting or attachments of any kind are allowed to be attached to the air cleaner top, bottom or filter. Any modifications to the air cleaner assembly or filter must be approved prior to use in competition.
12-19 Stock OEM fuel injection is allowed on V-6 cars.
12-20 Electric fuel pumps are allowed only on V-6 fuel injected engines.
11 – EXHAUST:
11-1 Stock cast iron with no modifications, as provided on engine. No center dump styles allowed.
11-2 Exhaust must terminate behind driver. Two (2 inch) pipes allowed. 2 into 1 pipes may be used provided the primary pipe does not exceed 2” O.D and the pipe after the merge does not exceed 2 ½”.
11-3 Mufflers are not required but, the 95 DBA rule will be strictly enforced.
We here at CNS would like to announce For 2012 Late model division that the use of bump stops will not be allowed. This decision was made by the track Tech officials and management, along with the polling data and information from NASCAR. We would like to Thank all of the registered Late Model Teams, for taking the time to use the new polling system on the web site. This is your voice to help the tech officials and track management make the best possible rule changes. CNS would also like to thank NASCAR for there input of information. We at the track feel that this is the best decision for racing here at CNS. Thank you again and good luck to all the teams in 2012.
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