1. You must be 16 years of age with parents signature to participate in Figure 8 races.
  2. Only one entry per person per class.  You must finish the night with the car you start with - no substitutions.
  3. All cars must be inspected one (1) hour prior to racing. Allow plenty of time for arrival through traffic.
  4. The person who will be racing the car must drive it through inspection.  (no additional pit crew)
  5. Initial draw will be conducted during pre-race inspection for your heat starting position. The driver and only the driver will draw for position each time a number is to be drawn.  Features will be lined up by inversion of the point standings following the previous race.  (First race of the season will be redraw)    Anyone that has not previously raced will start at the back.
  6. If entries are not ready for their heat, they will be placed at the rear of another heat at the discretion of officials.
  7. There shall be no deliberate driver's door hits. Deliberate driver door hits will result in disqualification.
  8. Any car placing all four tires outside of boundary will not be allowed to return.
  9. Any driver not obeying the rules will be disqualified.
  10. All cars MUST have a roof placard with car number, minimum 18" wide x 14" tall, with contrasting colors. Both front doors need not be painted white but must be painted a solid color and number must be of contrasting color and legible.
  11. Rules are final prior to the beginning of the race season. However, rules are subject to review by the track officials and may be subject to change. Additional rules and regulations may be imposed at each event. These will be announced at the pit meeting prior to the first heat. Driver's meeting at the judges stand 30 minutes prior to the first heat. All drivers must attend, no exceptions.
  12. Any driver can protest another competitor's car immediately after the event, but must be within 15 minutes after the last feature event is run. A protest fee of $100.00 cash must accompany any protest. Car will be inspected for legal engine, tires, and suspension. If the car is found to be illegal the protesting driver will get back $50.00 and $50.00 will go to the inspector. If your car is found to be legal then the car driver will get $50.00 and $50.00 will go to the inspectors.  Protester's car will also be inspected.  If both cars are illegal the $100.00 will go to the inspector.
  13. Any FIGHTING OR INAPPROPRIATE LANGUAGE from drivers, pit crew, or spectators in the pits may result in the following:  1st time verbal warning (to driver), 2nd time two (2) weeks suspension of driver and/or person in the pits, 3rd time suspension of driver and/or person in the pits for the rest of season.  This rule will be implemented by owner or person in charge if owner is absent
  14. Cars one lap down will restart at the back of the lead lap on a red flag.
  15. Cars with a flat tire not running in the top 3 will be black flagged.
  16. Consolation driver will draw for position.  Responsibility of the driver to go to official to draw number.
  17. To assure you get your same car number, the number must be bought at the cost of $5.00 payable to: Gunderson Racing- 323 1st Street SE Hampton, Iowa 50441
  18. Waiver will be signed by driver for each fair board and Gunderson Racing.
  19. No mud tires in any class.
  20. Cars should be race ready when coming through inspection.
  21. Red Flags - If your car stalls on the track and the race is stopped for your safety and you re-fire/reline up after the red flag is thrown you will be put to the backThird time you will be out of the race. If cars are stuck together the race will be stopped and the cars pulled apart.  You will go to the back.   Any removal of safety equipment, belts, neck brace, helmet, etc., you will not be allowed to continue.  If the race is stopped for parts coming off cars the race will be stopped and all cars will get their positions back.
  22. Any car not passing post race inspection will be inspected for the infraction prior to being allowed to race again.
  23. No one is allowed on the track. 1st time verbal warning (to driver), 2nd time two (2) weeks suspension of driver and/or person in the pits, 3rd time suspension of driver and/or person in the pits for the rest of season.  This rule will be implemented by owner or person in charge if owner is absent.
  24. Checks must be picked up 15 minutes after the conclusion of the final feature.  Checks will be held for one week.  If not claimed they will become property of Gunderson Racing.


All judges decisions are final.

Safety Rules (all classes)

  1. Safety belts and full face helmet required. Shoulder strap safety belt minimum required.
  2. Fire retardant driving suit mandatory.  Neck roll mandatory.  Full-toed shoes mandatory. Gloves mandatory.
  3. Must have mesh screen or minimum 3 bars in place of windshield opening in front of driver.
  4. Must have working window net, using a seat belt latch or a spring latch.  If the window net comes down during the heat, consulation, or feature race, driver will be black flagged.
  5. Racing seat allowed.
  6. Minimum 4 point roll cage securely welded to the frame.
  7. Driver's compartment may be reinforced for protection. These bars must have gussets at all joints.
  8. Spreader bar may be welded to roll bar and may extend from driver side door to passenger side door behind the driver's seat.
  9. Roll bars and door bars must be padded anywhere in reach of driver.
  10. Fuel tanks or fuel cells must be securely mounted in the trunk area and the stock gas tank must be removed from the stock location. All gas tanks must be secured and covered. No 5 gallon cans allowed. Any car spilling gas or catching fire will be disqualified. (Stock and Pro Stock - pump gas only - maximum 92 octane)
  11. Maximum of one 12-volt passenger car battery only. The battery must be securely mounted in the driver's compartment and covered.
  12. All drive shafts must be painted white.
  13. All cars must have drive shaft loop mounted 6 inches from front U-joint.
  14. Must have hole in front fire wall closed off for driver protection from hot fluids and fire.
  15. All cars, with the exception of small cars,  must have the power switch left of the steering wheel, this switch must cut all power with one (1) switch.  Cars may have additional switch in the middle.
  16. First time drivers will be put at the back of the heat to start.

Pro Stock Rules
No quick steer, no race gas, no rear rub bars, no added steel around fenders.
     
General Rules

  1. Absolutely no welding allowed unless specified below.
  2. Cars must be OEM appearing and performing.
  3. All cars must be inspected prior to racing. No car will be inspected without the hood and trunk lid raised or removed.
  4. Mechanical OEM type push rod fuel pumps only.


Frames

  1. OEM complete, 1964 or newer, perimeter American-made passenger car only.
  2. Frames must be stock. Repairs must be like material 1/8" or less.
  3. Bumpers must be stock if stock bumper is used. Bumpers may be bolted,chained, wired or welded to body or frame. Fabricated tubular bumpers allowed.  Maximum two horizontal bars and three vertical bars.  Max 1 3/4 pipe, .095 wall thickness.  Max 8" tall.  Nose cones and covers allowed. (See below)
  4. Corners may be wrapped with steel, maximum 14 gauge, .074 thickness, from edge of bumper or outside of fender 6" towards center of car.
  5. Front bumper may have two straps, maximum 2" wide x 1/4" thick that may be welded from front bumper to top of radiator support. Front and rear bumpers must be capped and welded to the body with no larger than 6" x 1/8" strips no longer than 12" from side of bumper to side of fender. Safety chaining of the bumpers is allowed. Strap may overlap bumper maximum 6" and overlap fender maximum 6". No sharp edges.
  6. You may weld seams on frame. Any car with reinforced frame, body or bumpers by excessive welding, plating or unnecessary ballast in or on cars will not be disqualified, but simply moved to the open class. In the event of post race inspection we find one or more of the above problems you will lose your prize money and points for that day and possible suspension.

Any car black flagged for rough driving during the feature will lose all but your show up points for the night.  You will also lose any money you would have received. 

Drivers pit meeting will be held 1/2 hour prior to the start of the race.

General Rules (all classes) 
 Car and driver must be through inspection one (1) hour prior to the start of the race or you will not be awarded the show up points for that race and you will start at the back of a heat.    Any races run Monday-Friday car and driver must be through inspection 1/2 an hour prior to the start of the race.   (If someone else is bringing your car to the track and you will not be able to bring the car through inspection you must notify us 1 week in advance.)
NO EXCEPTIONS!!!

Small Car Rules

Small cars will follow all stock class rules with the following exceptions:

  1. Front wheel drive cars only.
  2. 4 or 6 cylinder only.
  3. No turbo chargers.
  4. Gas tanks can remain in stock location, if they are above the axle.


Cruiser Car Rules
Cruiser cars will follow all stock class rules.
Must have safety equipment for both participants.
Entry fee will be $40.00 per car -

Accelerator pedal must be within one foot of the passenger door.  If using a rod system it must be on the engine side of the firewall or enclosed from side to side.



Old School Figure 8 Rules

General Rules

  1. Absolutely no welding allowed unless previously specified. No cutting torches or welders allowed in the pits area.
  2. NO aftermarket or high performance racing components allowed anywhere on the car, with the exception of pre-approved safety equipment
  3. OEM- Original Equipment Manufacturer. OEM products are those built specifically by, or for, major automotive manufacturers (IE- For, Chrysler, GM)
  4. Cars must be OEM appearing and performing.
  5. Drivers may maneuver forward or backward. There shall be no deliberate driver's door hits. Deliberate driver door hits will result in disqualification.
  6. Any car placing all four tires outside of boundaries will not be allowed to return.
  7. All shows will be a draw-redraw format. Drawing will be conducted during the pre-race inspection.
  8. All cars must be inspected prior to racing. Care must come through inspection area with hoods raised or removed.
  9. If entries are not ready for their heat, they may be placed at the rear of another heat at the discretion of the officials.
  10. You must be 18 years of age to participate in Figure 8 races.
  11. Minors under 18 may participate with a notarized proof of age and a signed consent of both parents or legal guardians. Only one entry per person
  12. Any driver not obeying the rules will be disqualifies.
  13. Additional rules and regulations may be imposed at each event. There will be announced at the pit meeting prior to the first heat. Driver's meeting at the judges stand 30 minutes prior to the first heat. All drivers MUST attend, no exceptions.
  14. EIRI- Except In Rare Instances. Decisions by the officials are final and binding without exceptions. In some cases, track procedural or safety rules take precedence over preceding rules. 


Frames

  1. OEM complete, 1964 or newer, perimeter American-made rear wheel driver passenger car only.
  2. Frames must be stock. Support welding allowed only when frame is cracked, bent or broken. Maximum 4" wide X 6" long X 3/16" thick flat steel support patches only, must by within 4" in all directions from crack, bend or break. Must be able to clearly see crack, bend or break after repair is made.Maximum of 4 repair plates per frame rail on the front an on the rear of the car. Door post divides the car in half. No replacement or non-stock frame horns or frame sections allowed, front or rear.
  3. Bumpers must be factory productions. Bumpers must be bolted, chained, wired or welded to the trunk or frame. No sharp edges. No trailer hitches allowed. Aluminum bumpers may be replaced with 6" X 3" X 1/4" thick tubing but may not extend more than 8" in front of the frame. Tubing must have 3- 2" X 2" inspection holes. A chrome bumper skin may be welded or bolted to the tubing. NO STUFFING OR FRONT OR REAR BUMPER!
  4. Rear bumper may be secured to car on only one of three ways; two metal straps, OR two chains OR two sections of 9 gauge wire. It strapping, two metal straps only, maximum 3" wide X 3/8" thick, may be welded from rear bumper to trunk lid. Strap may overlap bumper maximum of  6', and overlap the trunk lid maximum of 6". If the chain, it must wrap around the bumper and though trunk only once. If wire, two sections of maximum 9-gauge wire with maximum of 4 loops per section.
  5. Front bumper may be secured to the car with two metal straps and two sections of wire. Straps maximum 3" wide X 3/8" thick may be welded from the front bumper to the top of the front fender ONLY, not to the hood or radiator support. Strap may overlap bumper maximum of 6" and overlap fender maximum 6". Two sections of 9- gauge wire with maximum of 4 loops per section may go through bumper and around the radiator support but not through the hood.
  6. Bumper height must be a minimum of 16" and maximum of 24" from the ground. Bumpers must be in stock location.
  7. Any car with reinforced frame, body, or bumpers by excessive welding or extra metal will not be allowed to participate. No welding or factory seams. No pinning of frames.


Bodies

  1. All glass, including head and tail lights and door glass must be removed before coming into the pit area. All chrome strips and ornaments must also be removed. All flammable interior upholstery must be removed, including but not limited to carpet, ceiling fabric, back seats, plastic, etc.
  2. All doors must be bolted, chained, wire or welded shut. Driver's compartment may be reinforced for drivers safety. No gutting of the doors or factory interior metal allowed. If welded, maximum of 4" long welds with minimum 12" between welds. Driver's and passenger front doors recommended to be welded solid for driver's safety.
  3. Trunk and hood must be bolted, chained or wires shut only. (exception: refer to Frames #4). Maximum of 6 bolts allowed to fasten each the hood and trunk. Inspection holes required in the hood and trunk, minimum 144 square inch each (12" X 12")
  4. Maximum one 2" X 2" X1/4" thickness angle iron stiffener may be welded flush with OEM radiator support, but must not extend over 6" on either side of the radiator. Radiator support must remain in stock location. Hood bolts may run through radiator support. 6" X 6" x 1/4" thick flat gusset may be welded to the fender and radiator support but not touching the angle iron. One gusset per corner. Hood bolts can be attached to the gussets.
  5. Original rubber body mount bushing may be replaced with steel washers.
  6. Body panels may be patched but not replaced, and patches must conform to original body contour. Patches may not double the thickness of OEM body. Patch material must be maximum 14- gauge flat metal and must be welded over existing rust. No body patching allowed once car has been ran in competition.
  7. No aftermath addition to OEM body allowed (ground skirts, spoilers, wings, wondow covers, etc.) 
  8. Driver's and passenger side exterior rub rail only allowed, maximum 72" in length, 4" in height, and 2" in depth. May be welded or bolted to driver's and passengers door. If bolted, bolt heads must be to the outside of the body, nuts to the inside,. Must be mounted parallel to the ground and between front and read fender wells. Must be smooth front to rear, top to bottom, no protrusions. End must be capped or tapered. 
  9. Cutting fenders for wheel clearance only in allowed. Front and rear inner and outer fenders may be bolted together with a maximum of six 3/8" bolts per corner. The rear quarter panel is considered part of the fender.
  10. All cars must have a minimum of 12" X 12" roof place card with car number. Both front doors need not to be painted white, but must be painted a solid color and the number must be contrasting color and legible. No vinyl graphics allowed, exception is car number on roof place card.


Safety

  1. Each driver is solely responsible for the effectiveness of personal safety equipment used during the event. Approval of a car by inspectors shall mean only that it is approved for participation in a competitive event and shall not be construed in any way to mean that it is guaranteed mechanically sounds, safe or completely legal. Designated fair board and/or inspectors shall not be liable for any mechanical failure nor any losses, injuries or deaths resulting from participations
  2. Shoulder strap safety belts and full face helmet is required. 
  3. Long sleeved shirt, long pants, full-toed shoes, gloves, neck brace and eye protections is required. Fire-retardant apparel is recommended. 
  4. Must have mesh screen or minimum of 2 vertical bars in place of windshield opening from roof to dash in front of the driver. 
  5. Driver's compartment must remain open and as manufactured. No aftermarket dashes or other fabricated sheet metal design the encloses the cockpit in any way. Driver's compartment may be reinforced for protection. 
  6. Single hoop roll bar required. May be welded to the floor or the frame in 2 locations behind driver's seat, and/or two locations in front of driver's seat. Recommended that hoop is bolted or chained securely to the roof. No gussets or kickers to the frame.
  7. Spreader bar may be welded to roll bar and interior and may extend from driver's side door post to passenger side door post behind the driver's door. Additional spreader bar may be welded across dash from front of driver's side door to front of the passenger's side door. No gussets or kickers to front or rear firewall, body or frame.
  8. Spreader bars may be connected to on another only by door bars welded within in the cockpit and inside of front doors. 
  9. Roll bars and door bars must be padded anywhere within reach of driver.
  10. Steel fuel tanks must be securely mounted in the back seat area only. No fuel tanks allowed above or behind rear frame humps. The stock gas tank must be removed from the stock location. All gas tanks must be secured and covered. Plastic gas tanks must be inside metal box. NO 5 gallon gas cans allowed. Any cars spilling gas or catching fire will be disqualified. Pump gas only. No racing fuel or alcohol allowed. 
  11. No fuel filters or electric fuel pumps in driver's compartment. Electric fuel pumps in engine compartment must be connected to ignition switch and clearly marked 'ON' and 'OFF' ALL fuel lines and transmission lines in driver's compartment must be ran through steel conduit if they are rubber. 
  12. Maximum of one 12-volt passenger car battery only. This battery must be securely mounted in the driver compartment and completely covered. 
  13. No intentional ballast allowed, including but not limited to bolt-on lead or steel weight, sand bags, etc.


Suspension

  1. Al components must be OEM and steel.
  2. Rear end must be 5- stud OEM productions rear end. No 3/4 ton or Ford 9" rear ends allowed. Stock spider gears only, may be welded for positive traction.
  3. No spring spacers, jacks, blocked shocks, air shocks or racing shocks allowed. One unaltered steel, non-adjustable, non-take apart, OEM-mounted shock, In OEM location, per wheel.
  4. If shocks has a coil spring around it, spring must be cut.
  5. Car must have some travel in all four corners of suspension when prompted.


Wheels and Tires

  1. Maximum wheel width allowed is 7". Maximum wheel diameter allowed is 16".
  2. Factory production steel DOT wheels only. No racing wheels allowed. No beadlock rims or split rims.
  3. All hubs must have all wheel studs and all lug nuts
  4. Valve stems protectors may be welded to the wheels, but only welding on wheel allowed must be within 2" on the valve stem in all directions.
  5. Tires must be DOT approved for street use. No skid loader tires or 3-ribbed tires. Tires must be tubed, but not stuffed with anything other than air. No smaller tires, foam, water, etc
  6. All car must have steel OEM, operative four wheel, drum or disc brakes, before their heat race and feature. No brake shut off, pressure sensitive or proportioning devices allowed. 


Engines

  1. Radiators must remain in original location. No extra radiator supports allowed (exception: refer to Bodies #4). Overflow tubes must be to the ground.
  2. Transmission coolers are allowed but must be properly secured.
  3. Headers allowed, but must be of own design. No performance or aftermarket headers. 
  4. NO ANALOG OR DIGITAL ENGINE GAUGES ALLOWED. (tachometer, oil pressure, water temperature, etc)
  5. ALL ignition rotors, cap, coils and modules must remain OEM-appearing. No ignition boxes. 
  6. Must have unaltered OEM factory intake for make and model of engine. No aftermarket, high rise or marine intakes.
  7. Unaltered OEM factory 2-barrel carburetor only. Carburetor must match engine. Must remove carburetor choke plate. No carburetor spacers allowed, exception is max. 1" adapter plate from 4- barrel intake. One1/4 inch max. thickness gasket only. 
  8. All engine components must be steel. No aftermarket or high performance engine components.
  9. No porting, polishing, and alterations of any kind to the heads or intake.
  10. Engine must be in OEM location, using any OEM engine mounts. Engine mounts may be welded to engine cradle. Engine must be OEM appearing and must be able to be used in conventional passenger car without alterations.
  11. All bolt on and external engine components must be OEM.
  12. 16" vacuum rule will be in place
  13. May use GM engine in Ford, Dodge, etc.
















Bodies

  1. All glass, including head and tail lights and door glass must be removed before coming into pit area. All chrome strips and ornaments must also be removed. All flammable interior upholstery must be removed, including but not limited to carpet, ceiling fabric, back seats, door plastic, etc.
  2. All doors must be bolted, chained, wired, or welded shut. Driver's compartment may be reinforced for driver safety.
  3. All cars must have operable hood and trunk lids, they must be pinned not bolted. Maximum 6 pins allowed to fasten the hood.
  4. Maximum one 2"x2"x1/4" thickness angle iron can be welded to radiator header and extend from corner gusset to corner gusset. May be welded to gussets.
  5. Corner gussets allowed, but may be no more then 6"x6"x1/4" thickness flat steel, welded to fender and radiator support. May be welded to radiator support angle iron.
  6. Original rubber body mount bushings may be replaced with steel washers.
  7. Only door panels may be patched for driver safety, but replacement pieces must conform to original body contour. Patches may not double the thickness of OEM body. No added material to body anywhere but doors.
  8. No after market additions to OEM body allowed (i.e. spoilers, wing, etc.) except sun visor.
  9. Two rub rails allowed, one on drivers side, one on passenger side, maximum 72" in length, 6" in height, and 2" in depth. May be welded or bolted to door(s). Must be mounted parallel to ground and between front and rear fender wells. Must be smooth front to rear, top to bottom, no protrusions. Ends must be capped or tapered. If using channel iron, channel must be toward body.
  10. No bars in front of the back side of the front tire.  No bars behind the front side of the rear tire.  There will be three bars allowed to support front fenders.
  11. Cutting fenders for wheel clearance only is allowed. No cutting torches allowed in pit area.
  12. Should have a steel plate, minimum 1/8" thick, under leg and seat area for driver protection.
  13. Three straps or bars, maximum 1", to hold front fenders on.  Two at the top and one between the bumper and the front tire on the bottom.  To be attached to the fender by no more than 4 inch square 14 gauge.  



Suspension

  1. All components must be OEM and steel.
  2. Stock or 9" Ford rear end. Floaters allowed. No 3/4 ton rear ends. Stock spider gears may be welded for positive traction.
  3. If shock has a coil spring around it, spring must be cut.
  4. Tubular A-frames allowed.
  5. Stock rear end control arms.  Must be stock length and non-adjustable
  6. No intentional ballast allowed, including but not limited to, bolt on lead or steel weight, sand bags, etc.



Wheels and Tires

  1. Maximum wheel width allowed is 8". Maximum wheel diameter allowed is 15".
  2. Can use any rim/racing wheels are legal. Bead locks allowed.
  3. All hubs must have all wheel studs and lug nuts. Must have 1 inch lug nuts.
  4. Valve stem protectors may be welded to wheels, but only welding on wheel allowed must be within 2" of valve stem in all directions.
  5. Tires may be tubed, but not stuffed with anything other than air. No small tires, foam, water, etc.
  6. All cars must have steel OEM, operative four wheel, drum or disc brakes before their heat race and feature. No brake shut off, pressure sensitive or manual proportioning devices allowed.
  7. Radial passenger car tires and racing tires are legal. Maximum 8" wheel.
  8. NO 700-15LT TIRES WILL BE ALLOWED.


Engines

  1. Radiators must remain in original location. Overflow tubes must be to the ground. Optional Radiator support: 1 - 4" x 1/4" C channel -- must be mounted inside the frame rails -- bottom of the radiator only.
  2. Transmission coolers are allowed.
  3. Engine gauges allowed. (tachometer, oil pressure, water, temperature, etc.)
  4. All ignition rotors, caps, coils and modules must remain OEM-appearing. Soft touch rev control is allowed.
  5. Engine must match. Ford in Ford. GM in GM. Chrysler in Chrysler.
  6. Engine Quest seat angles and valve sizes can not be changed, three angle valve job only. Absolutely no casting removal in valve pocket of Engine Quest head for any reason.


Brakes

  1. All four brakes must work. Rear disc brakes allowed. Must lock up on inspection.
  2. No aftermarket brake pedal setups.
  3. No brake bias.


Shocks

  1. Racing shocks allowed.
  2. Must be mounted in stock location and stock mounts.


Springs

  1. Racing springs allowed. Stock mounts, stock location. No weight jacks.


Steering

  1. No Quick steer


Drive shafts

  1. Must be painted white. Must have at least one strap or chain under drive shaft.


Battery

  1. One automotive type battery.
  2. Securely fastened down and covered inside battery box.
  3. Battery must be in the driver's compartment.


Radiator

  1. Aluminum racing radiators allowed. Radiator in stock location.


Stock means stock.

  1. Cast iron factory heads. No aluminum heads. No aftermarket heads.
  2. Flat top or dish pistons only.
  3. No roller rocker arms. No roller cams. Can run stamp steel roller tip rockers.
  4. Aftermarket and aluminum intakes allowed.
  5. Aftermarket carbs allowed OEM fuel injected engines allowed.  No electric fuel pumps.
  6. Headers allowed, must exit under the car.
  7. Engine needs to be in stock location.
  8. Engine must be able to carry 15 inches of vacuum at 1000 RPM
  9. Maximum compression - 9.5:1


Fuel Tanks

  1. Fuel tanks or fuel cells must be securely mounted in the trunk area and the stock gas tank must be removed from the stock location. All gas tanks must be secured and covered. No 5 gallon cans allowed. Any car spilling gas or catching fire will be disqualified. Fuel cell must be mounted above level of OEM trunk floor.  No excessive gussets or bracing in the trunk area.
  2. Fuel lines must be inside a structure or conduit if running inside the drivers compartment. 
  3. Back seat area (where back seat was) should be covered with light metal. 


Stock Class Rules

General Rules

  1. Absolutely no welding allowed unless specified below.
  2. No after market racing components allowed anywhere on car, with the exception of pre-approved safety equipment.
  3. Cars must be OEM appearing and performing.
  4. All cars must be inspected prior to racing. No car will be inspected without the hood and trunk lid raised or removed.
  5. Mechanical OEM type push rod fuel pumps only. Unaltered OEM two barrel carburetor for that engine. Venturi I.D. can be no larger then 1.375 on Rochester Carburetor. Must remove carburetor choke plate.
  6. Any gear allowed.
  7. No quick steer.
  8. No stall convertors – must be stock.
  9. Random pre-race tech.


Frames

  1. OEM complete, 1964 or newer, perimeter American-made passenger car only.
  2. Frames must be stock. Repairs must be like material 1/8" or less.
  3. Bumpers must be stock. Bumpers must be bolted, chained, wired or welded to body or frame.
  4. Front bumper may have two straps, maximum 2" wide x 1/4" thick, that may be welded from front bumper to top of radiator support. Front and rear bumpers must be capped and welded to the body with no larger than 6" x 1/8" strips no longer than 12" from side of bumper to side of fender. Safety chaining of the bumpers is allowed. Strap may overlap bumper maximum 6" and overlap fender maximum 6". No sharp edges.  See the picture in Pro Stock section.  Tubular bumpers will be allowed.
  5. You can weld seams on frame. Any car with reinforced frame, body or bumpers by excessive welding, plating or unnecessary ballast in or on cars will not be disqualified, but simply moved either to the pro stock class or the open class. In the event of post race inspection we find one or more of the above problems you will lose your prize money and points for that day and possible suspension.
  6. No X bracing behind rear axle between frame.


Bodies

  1. All glass, including head and tail lights and door glass must be removed before coming into pit area. All chrome strips and ornaments must also be removed. All flammable interior upholstery must be removed, including but not limited to carpet, ceiling fabric, back seats, door plastic, etc.
  2. All doors must be bolted, chained, wired, or welded shut. Driver's compartment may be reinforced for driver safety.
  3. All cars must have operable hood and trunk lids, they must be pinned not bolted. Maximum 6 pins allowed to fasten the hood.
  4. Maximum one 2"x2"x1/4" thickness angle iron can be welded to radiator header and extend from corner gusset to corner gusset. May be welded to gussets.
  5. Corner gussets allowed, but may be no more then 6"x6"x1/4" thickness flat steel, welded to fender and radiator support. May be welded to radiator support angle iron.
  6. Original rubber body mount bushings may be replaced with steel washers.
  7. Only door panels may be patched for driver safety, but replacement pieces must conform to original body contour. Patches may not double the thickness of OEM body. No added material to body anywhere but doors.  Fenders must be replaced with factory fenders, can not be fabricated steel or homemade. 
  8. No after market additions to OEM body allowed (i.e. ground skirts, spoilers, wing, etc.) except sun visor.
  9. Two rub rails allowed, one on drivers side, one on passenger side, maximum 72" in length, 6" in height, and 2" in depth. May be welded or bolted to door(s). Must be mounted parallel to ground and between front and rear fender wells. Must be smooth front to rear, top to bottom, no protrusions. Ends must be capped or tapered. If using channel iron, channel must be toward body.
  10. No rub rails allowed inside or outside of front or rear quarter panels
  11. Cutting fenders for wheel clearance only is allowed. No cutting torches allowed in pit area.
  12. Rust patching is ok as long as it is below the rub rail line and is only one layer thick. Repairs must be OEM thickness – 14 gage or less.  If you need to fix rear quarter or front fenders the repairs need to be approved by a Gunderson Racing official!!!
  13. Corners may be wrapped 3" towards he center of the car and 3" toward the body of the car.
  14. Trunk floor cannot be removed.  If floor is rusted it must be replaced with original thickness of steel 14 gage or less.
  15. After market front inner fenders may be used but can only be attached to the fire wall and front fenders, not to the frame.  Rear inner fenders can only be attached to the drivers compartment and fender, not to the frame.


Suspension

  1. All components must be OEM and steel.
  2. No 3/4 ton rear ends allowed. Stock spider gears may be welded for positive traction.
  3. No spring spacers, jacks, blocked shocks, air shocks or racing shocks allowed. One unaltered steel, non-adjustable, non-take apart, OEM-mounted shock, in OEM location, per wheel.
  4. If shock has a coil spring around it, spring must be cut.
  5. No intentional ballast allowed, including but not limited to, bolt on lead or steel weight, sand bags, etc.
  6. May use tubular a-frames.
  7. May run a Ford 9 inch floater or non-floater rear end, rear disc brakes allowed.
  8. Stock rear end control arms.  Must be stock length and non-adjustable.


Wheels and Tires

  1. Maximum wheel width allowed is 8". Maximum wheel diameter allowed is 15".
  2. No bead lock rims allowed.
  3. All hubs must have all wheel studs and lug nuts.
  4. Valve stem protectors may be welded to wheels, but only welding on wheel allowed must be within 2" of valve stem in all directions.
  5. Tires must be DOT approved for street use. P-metric rated tires only and must display the P rating on the sidewall (i.e. P225, P235, etc.)
  6. Tires may be tubed, but not stuffed with anything other than air. No small tires, foam, water, etc.
  7. All cars must have steel OEM, operative four wheel, drum or disc brakes before their heat race and feature. No brake shut off, pressure sensitive or manual proportioning devices allowed.
  8. NO 700-15LT TIRES WILL BE ALLOWED.
  9. Can run racing tires.
  10. 1" lug nuts mandatory.


Engines
No solid cams.  No electric fuel pumps.

  1. Radiators must remain in original location. . Overflow tubes must be to the ground. Optional Radiator support: 1 - 4" x 1/4" C channel -- must be mounted inside the frame rails -- bottom of the radiator only.  No gussets to channel iron.
  2. Transmission coolers are allowed.
  3. No fabricated headers allowed. Stock manifolds may be inverted for vertical exhaust. No center dump exhaust.  No cutting of dumps, must be stock.
  4. Engine gauges allowed. (tachometer, oil pressure, water, temperature, etc.)
  5. All ignition rotors, caps, coils and modules must remain OEM-appearing.
  6. Must have unaltered OEM factory intake for make and model of car. No high rise or marine intake manifolds. No aluminum intakes.
  7. Unaltered 2 barrel stock OEM carburetor for that engine only. Must remove carburetor choke plate. No carburetor spacers allowed. One 1/4" maximum thickness gasket only. Adaptor allowed from a 4 barrel intake to a 2 barrel carburetor.
  8. All engine components must be steel. No aftermarket engine components.
  9. No porting, polishing or alterations of any kind to heads, intake and/or exhaust manifolds.
  10. Engine must be in OEM location, using any OEM engine mounts. Engine must be OEM appearing and must be able to be used in conventional passenger car without alteration.
  11. Engine must match. Ford in Ford. GM in GM. Chrysler in Chrysler.
  12. Maximum engine compression allowed is 8.6:1.
  13. Must be able to carry 16 inches of vacuum @ 1000 RPM.
  14. No double hump heads.
  15. No stroker motors. 
  16. Crank shaft must match motor.
  17. Can run aluminum radiator.
  18. Exhaust manifolds must have flanges and donuts visible.
  19. LT1 manifolds may be used.

Gunderson Racing

Hampton, Iowa