Traditional Sprint Car FanSite

See You At The Races!!!

 I90 Speedway Non-Wing Sprint Cars - 2007 Rules

2007 Season Rules
Interstate Auto Centers I-90 Speedway

-Wingless Limited Sprints- (Last revised 12/1/06 )

This class is open to drivers 16 years and older. Payoff will be based on car count.


  1. All sprint car frames must be a sprint car design. Both torsion bar & coil over are allowed.
  2. No aluminum frames, no aluminum king pins, no aluminum kick bars and no aluminum bumpers
  3. No titanium products of any kind allowed on the race car.
  4. Roll cages must be a minimum of (1.375) inch diameter (.095) thickness, seamless tubing.
  5. All race cars must have a front bumper, rear bumper and kick bars on both sides of the race car, steel only.
  6. All race cars must have a racing fuel cell with bladder


  1. All cars must have a minimum of (3) wheel brakes. (Inboard & front brake)
  2. In & out box, sliders & shifter rear ends only. No transmissions or clutches.
  3. The drive line must be fully enclosed by a torque tube, torque tube must have a 3/8 inch inspection hole. A drive shaft loop or a drive shaft strap is mandatory.


  1. The engine must appear strictly stock. Cast iron blocks and heads only. Only stock OEM rods and crankshafts allowed. No (400) or larger cubic inch parts allowed. Stroke must match block.
  2. No roller lifters. Guide plates and stud girdles allowed.
  3. Maximum (360) cubic inches on Chevrolets & (370) cubic inches on Fords & Chryslers. (2% allowance when tubing for C.I.)
  4. 2 3/16” Injection max and must run 1 7/8” sleeves max ,minimum length 3”, (This sleeve must seal with injector stack) or 2 barrel alcy carb.- injector sleeves must be round, inside weld may be removed.
  5. Steel or aluminum pulleys allowed. No dry sump oiling systems.
  6. Flat top pistons only. Only steel heads allowed. Only 23° heads will be allowed. Offset rocker arms will be allowed if the offset does not exceed .250”. No raised runner heads allowed. Titanium valve retainers will be allowed. Any Ford cast iron head will be allowed.
  7. Minimum 3/4 inch inspection hole on side of oil pan 2 1/2 inches down from pan rail in line with a journal required. Inspection hole must be easily accessed by tech official.


  1. The top four finishers in the events feature will be subject to an engine protest. Any driver finishing on the same lap as the fourth place car is eligible to protest provided they are a legal car, the driver pulls into the claim area under his own power and announces his/her intentions to protest to the track official and produces $100 cash. $75 will go to the claimed driver and $25 goes to the track in the event the protest is accepted. The $75 will only go to the claimed driver if he is legal. If the claimed driver is NOT legal, the $75 goes back to the claimer driver. A protest will be top end only. The intake and heads will be removed and all parts will be inspected. In the event of a refusal, the driver will lose all points and pay for the event, be suspended for two points races, lose his rights to protest for the season and be required to pay a $300 fine to the track before being allowed to return. Additional rules apply (see general track rules for more details).


  1. Only alcohol or ethanol will be permitted. No gasoline.
  2. No performance additives allowed.


  1. No adjustable (from cockpit) shocks or torsion bars allowed.
  2. Coil over suspension is allowed.


  1. Right rear tire must be Hoosier SP2 or SP3. Left rear tire must be Hoosier.
  2. All front tires must be Hoosier.
  3. No tire softeners allowed. Tires must durometer within factory specifications.


  1. Car and driver must weigh a minimum of 1500 lbs. immediately after each race. Failure to weigh or failure to meet minimum weight will result in disqualification from that race and all points and pay will be forfeited. All bolt on weight must be securely bolted.


  1. Minimum (84) inch wheelbase.


  1. No plastic wheels allowed.
  2. No carbon fiber wheels allowed.
  3. Beadlocks are highly recommended


  1. No wings, unusual side panels or air foils allowed. Head hoop required over driver's helmets.
  2. All numbers must be a 12”minimum on nose cone and must be east to read.


  1. Competition shoulder harness and lap belt must be a minimum of (3) inches wide. Submarine belt and arm restraints are mandatory. Metal to metal buckles are required on shoulder harness and lap belts. All belts are required not to be over (2) years old.
  2. Fire retardant racing suit is mandatory.
  3. Fire retardant racing gloves and shoes are mandatory.
  4. Fire retardant shoes, socks, underwear and hood are highly recommended.
  5. Neck brace is required
  6. Roll cage net is mandatory.
  7. Helmets - SNELL SA00 or SA05 required. Helmets must be worn at all times when driver is operating race car.
  8. No transmitting or listening devices are allowed in the race car.
  9. No electronic monitoring computer devices capable of storing or transmitting information, except tach, allowed on the race car.


  1. Any rules not covered here or any rules in question will be left up to the officials in charge. Their decision will be final.


Track officials shall have responsibility for rules regulations enforcement at all events. At the discretion of track officials in charge, any competitor may be disqualified for rule violations, hazardous equipment or hazardous actions. All cars are subject to inspection at any time. Approval of vehicle by the inspector shall mean only that the vehicle is approved for participation in a competitive event and shall not be constructed in any way to mean that the inspected vehicle is guaranteed mechanically sound. Be it further declared that the inspector shall not be liable, for any losses or injuries resulting from the same. Any unsportsmanlike conduct by the drivers, owners and/or pit crews shall be grounds for disqualification. Drivers are responsible for the conduct and action of their crew members. Absolutely NO alcoholic beverages will be consumed by driver or pit crew prior to or while competing. No use of illegal drugs. All drivers must be at least 16 years of age (proof of age required). Drivers under 18 years of age must have a signed and notarized parental consent form by parents or legal guardian and said consent must be in the hands of the track official before the individual will be allowed to participate in any event. The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these event, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OR SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official. The race director shall be empowered to permit reasonable and appropriate deviation from any of the specification herein or impose any further restrictions that in his/her opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation of deviation of these rules is left to the discretion of the officials. Their decision is final.






Get your own FREE Guestbook from htmlGEAR


  & MORE