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Rules

Heads Up Rules

Rules for Street Car Grudge Racing

Updated 4/16/15
  1. The intent of this class is to race real street cars, not street driven race cars with license plates.
  2. ORP general safety rules must be followed and proper driver equipment for speed and ET worn on all runs.
  3. All vehicles must have current tags (NO Dealer Tags) and current proof of insurance.
  4. This event will be run on a 1000 ft track until such time that the race director feels the contestants are too fast for the conditions. The race distance can be changed at any time if the ET's and MPH's dictate a change.
  5. This will be a 10 position "LIST"
  6. There will be a maximum of three rounds of pairings per grudge race event.
  7. This event will be run on a .400 pro tree. There will be no scoreboard displays of ET and MPH. Time slips will be cut in half, drivers will only receive their half
  8. Anyone can join the action at any scheduled race, BUT, you will be paired with the lowest present vehicle on "THE LIST" and race each vehicle on the ladder on your way up to your best position.
  9. All cars need to retain OEM floor pans, firewall, and frames/frame rails.
  10. All cars need to retain a somewhat stock appearing interior.
  11. Suspension modifications are allowed but NO back half or full tube chassis.
  12. All cars must have mufflers/exhaust dumps routed under the floor pan. NO exhaust exits through the front fenders, hood, or other front end body parts of the vehicle.
  13. Any type of rear tires may be used, BUT, they must be installed on the drive axles of the vehicle prior to the street driving portion of the event.
  14. All vehicles must be able to drive from the ORP staging lanes to Hwy 60 and back with no stops or cool downs. All vehicles must return DIRECTLY to the staging lanes upon return to ORP. Minimum cool down and refuel time will be allowed in staging before racing begins.
  15. All electronic tuning aids and laptop computers must be unhooked and stored before leaving the ORP staging lanes. NO electronic/laptop computer tuning allowed during the duration of the street grudge event. NO manual tuning allowed (ie. timing changes,jet/pill changes, nitrous system changes, boost changes, etc.) during the duration of the street grudge event. Refueling and nitrous bottle changes only will be allowed.
  16. All vehicles that "just made a pass" will get 20 minutes for transmission/convertor cool down before the next pairing.
  17. In order to have the maximum amount of racing and the maximum amount of pairings in each round, all vehicles present will be paired by the race director.
  18. Vehicles that are present will be paired from the bottom of "THE LIST" to the top. If there is an odd number of vehicles, the highest vehicle will get a first round bye run. NOT PRESENT vehicles can only get bumped down one position per round.
  19. All new vehicles hoping to win a position on "THE LIST" will be paired together in the first round to determine who will be the first to challenge the lowest vehicle present.
  20. These rules can be amended at any time by the race director.

EXAMPLE #1: Car #4 is not present, so car #5 may be paired with car #3. If car #5 loses the match, positions remain the same. If car#5 wins the match, he becomes car #3 and the losing car becomes #4. Previous car #4 becomes #5 or gets bumped down because he is not present.

EXAMPLE #2: Car #10 is not present, so a new car may be paired with car #9. If the challenger loses the match, positions remain the same. If the challenger wins the match, he becomes car #9 and the losing car becomes #10. Previous car #10 gets bumped off because he is not present.

 

Heads Up Rules

Midwest 8.5 Racing Association Rules

Published 12/20/13

Please read the ORP General Rules which apply to all races conducted at Ozark Raceway Park.

To avoid conflicting sets of rules, please reference the Rule Set at Midwest 8.5 Racing Association.
 

Heads Up Rules

Pro Street Rules:

Published 1/24/15

2015 Rules Changes Highlighted in Yellow

Please also read the ORP General Rules which apply to all races conducted at Ozark. For Non-ORP races, the sanctioning body rules of the track the event is being held at apply.

Engine & Drivetrain:

  • Any power adder acceptable.
  • Must run a collector style header. (no zoomies)
  • Any motor combination acceptable.
  • Engine diaper for oil containment is required.

Weight Requirements:

Base Weight 2800
  • Deduct 200 lbs for Nitrous Oxide
  • Deduct 200 lbs for Small Blocks
  • Deduct 400 lbs for Naturally Aspirated
  • Add 200 lbs. for Twins, Screws, and 5" and bigger bore space blocks

These weight breaks are to be compounded or added together.(i.e. A naturally aspirated small block gets a 200 lb break for being a small block plus a 400lb break for being naturally aspirated meaning it can run at 2200 lbs.

More examples -
4.84 Bore Space Big Block Chevy on Nitrous 2600 lbs.
Twin Turbo Small Block 2800 lbs.
Twin Turbo Big Block 3000 lbs.
5"+ bore space Big Block with Screw Blower 3000 lbs.

Body & Suspension:

  • Funny car or one piece bodies not allowed even if equipped with doors.
  • Maximum front end overhang of 45” as measured from centerline of front spindle.
  • An approved extension may be used to reach 45” if the front end overhang of the body is less than 45”.
  • Doors required! Doors must be functional and able to be opened from both the inside and outside of the vehicle.

Miscellaneous:

  • Cars will run on a .400 pro tree, for an 1/8th mile.
  • All cars must be able to pass track’s tech inspection – NO EXCEPTIONS.
 

Bracket Racing Rules

Pro Tree No Box Class

General

New Pro Box No Tree Rules Pending...
 

Heads Up Rules

Drag Radial Rules

Updated 1/8/15

Changes highlighted in Yellow

Please also read the ORP General Rules which apply to all races conducted at Ozark. For Non-ORP races, the sanctioning body rules of the track the event is being held at apply.

Engine:

  • Any automotive engine is permitted, OEM bore space blocks only.
  • Exhaust: Mufflers required on all combinations except turbos. Exhaust exiting ahead of front tires allowed, but must not affect timing or staging beams. No Zoomies.
  • Fuel: Cars must run on Gasoline, Ethanol (E85/E98) or Alcohol.
  • Induction: Drag Radial Cars are allowed the use of ONE power adder. Example: 1 Blower, 1 Turbo, Single Stage N.O.S. System (Exception- Small Blocks can run multiple stage Nitrous)
  • Maximum Turbo Size: 88mm (adapter horns are acceptable) Must pass go/no go gauge
  • Maximum Procharger Size: F-1R or comparable. F2 legal with 3.875 inlet reducer, mounted no further away than the original inlet flange. F2R & F1X is not legal!
  • Engine diaper or NHRA-accepted belly pan for oil containment required.

Frame & Suspension:

  • Cars must maintain the factory frame. Frame rails must be located in factory position.
  • Chassis bracing and reinforcing is permitted.
  • Ladder Bars permitted.
  • Factory four links are acceptable. Aftermarket four links are illegal!
  • Minor frame notching will be allowed.
  • Any bolt on K-Member or front sub-frame allowed with original suspension mounting points.
  • Front frame rails must be in original OEM location.
  • Front suspension components may be replaced with after-market bolt-on parts.
  • NO WHEELIE BARS!

Weights

  • Base Weight: 3000 lbs, Small Block NOS 2600 lbs

Tire:

  • Commercially available “Name Brand” drag radial tire factory labeled 315/60R15 (or smaller) or a True 10.5 x 28 slick.

Miscellaneous:

  • The cars should have stock appearing interiors.
  • Cars must have WORKING headlights and tail lights.
  • Cars must have coolant overflow tank and secured battery mounts mandatory.
  • Rules subject to review at anytime. Competitors will have a 30 day compliance period should there be any new rules.
  • Fiberglass hoods, fenders, bumpers, doors and deck lids will be the only fiberglass body parts allowed.
  • Lexan windows allowed, must maintain factory appearance.
  • Cars will run on a .400 pro tree, for an 1/8th mile.
  • All cars must be able to pass track’s tech inspection – NO EXCEPTIONS.
   

Heads Up Rules

True 10.5 Rules:

Updated 1/8/15

No Rule Changes for 2015 Season

Please also read the ORP General Rules which apply to all races conducted at Ozark. For Non-ORP races, the sanctioning body rules of the track the event is being held at apply.

Engine:

  • Any automotive engine is permitted.
  • Exhaust: Mufflers required on all combinations except turbos. Exhaust exiting ahead of front tires allowed, but must not affect timing or staging beams. No Zoomies.
  • Induction: Any induction setup is permitted. Any power adder is allowed.
  • Power Adders: Unlimited.
  • Engine diaper or NHRA accepted belly pan for oil containment required.

Fuel & Fuel Systems:

  • Any type of gasoline or alcohol is permitted. (No Nitro methane)

Frame & Suspension:

  • Cars must maintain the factory firewall in stock location.
  • Must maintain stock front frame rails for full frame vehicles.
  • Cars are allowed to back-half the rear frame section of the car, and chassis bracing and reinforcing is permitted.
  • Coil over and ladder bars cars allowed, aftermarket 4 link and OEM 4 links also allowed.
  • Front frame rails must be in original OEM location.
  • Front suspension components may be replaced with after-market bolt-on parts.
  • Any bolt on K-Member or sub-frame allowed with original suspension mounting points.
  • Rack and pinion allowed on any car.
  • NO WHEELIE BARS!

Tire:

  • All cars must run a true 10.5” or smaller slick. They must be labeled from manufacture on sidewall, and may be measured.
  • 315/65R15 or smaller Drag Radial is acceptable also.

Miscellaneous:

  • Cars must have WORKING headlights and tail lights.
  • Fiberglass hoods, fenders, bumpers, doors and deck lids will be the only fiberglass body parts allowed.
  • Lexan windows allowed, must maintain factory appearance.
  • Cars will run on a .400 pro tree, for an 1/8th mile.
  • All cars must be able to pass track’s tech inspection – NO EXCEPTIONS.
   

Heads Up Rules

[updated 1/8/15] Updated for 2015, no vehicle rule changes. Removed Pit Safety and Parking Section Only.

Engine

  • Engine: Any automotive engine is permitted
  • Exhaust: All automobiles must be equipped with mufflers. Inserts will be allowed.
  • Induction: Any induction setup is permitted. Also, any power adder is allowed.
  • Power Adders: Unlimited!!
  • Engine diaper for oil containment is highly recommended. (added 1/18/12)

Fuel and Fuel Systems

  • Any type of gasoline or alcohol is permitted. (NO Nitromethane)

Frame & Suspension

  • Cars must maintain the factory firewall in factory location. Also, cars must maintain factory stock sub frame, frame or framerails!!
  • Cars are allowed to back-half the rear frame section of the car, and chassis bracing and reinforcing is permitted. Front suspension components may be replaced with after-market bolt-on parts.
  • Rack and pinion allowed on any car.

Tire

  • Tires: All cars can run a 10.5" W or smaller slick. They must be labeled from manufacture on sidewall, and may be measured.

Miscellaneous

  • Cars must have WORKING factory style headlights and taillights.
  • Cars may use fiberglass front clip, doors, decklid and bumpers. No fiberglass bodies.
  • Lexan permitted.
  • Cars will run on a .400 pro tree, for an 1/8th mile.
  • All cars must be able to pass track’s tech inspection - NO EXCEPTIONS. For further car specs, refer to NHRA rules and regulations.

Please also read the ORP General Rules which apply to all races.

   

Heads Up Rules

Mickey Thompson Pro Mod Rules

Published 1/8/15

No Changes for 2015 Season

Please also read the ORP General Rules which apply to all races conducted at Ozark. For Non-ORP races, the sanctioning body rules of the track the event is being held at apply.

Engine:

  • Any engine, tranny, and fuel combination allowed.
  • Engine diaper or NHRA-accepted belly pan for oil containment required.

Tires:

  • Any tire size or brand allowed.

Body:

  • Funny car or one piece bodies not allowed even if equipped with doors.
  • Maximum front end overhang of 45” as measured from centerline of front spindle.
  • An approved extension may be used to reach 45” if the front end overhang of the body is less than 45”.
  • Doors required! Doors must be functional and able to be opened from both the inside and outside of the vehicle.

Miscellaneous:

  • Cars will run on a .400 pro tree, for an 1/8th mile.
  • All cars must be able to pass track’s tech inspection – NO EXCEPTIONS.
   
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