Rules

Insurance fee (mandatory):

Pulling Classes:

Xcaliber Pulling offers a total of 10 different classes. They are:

1.11500lb Profarm Tractor: 505 cubic inch limit

2.6400lb Limited Prostock Tractor:

410 cubic inch—1 turbo

315 cubic inch—2 turbos (diesel only) 6100lb Limited Prostock Tractor:

360 cubic inch—2 turbos

3.6200lb Prostock 4X4 Truck

4.8500lb Limited Prostock Tractor: 466 cubic inch limit

5.6200lb Modified 2WD Truck

6.8000lb 3.0 Diesel Prostock Truck

7.6000lb Extreme Super Stock Tractor

6000lb—Alcohol 6200lb—Diesel

8.6200lb Modified 4WD Truck

9.9500lb 4.1 Limited Prostock Tractor: 640 cubic inch limit

Purse Payout

Profarm: $1000.00 per class

Payout: 8 places $220-$200-$170-$140-$100-$80-$60-$30

6400lb Limited Prostock: $1500.00 per class

Payout: 8 places $350-$300-$225-$175-$150-$125-$100-$75

6200lb Prostock 4X4: $1500.00 per class

Payout: 8 places $400-$325-$220-$150-$135-$105-$90-$75

8500lb Limited Prostock: $1800.00 per class

Payout: 8 places $415-$360-$270-$215-$180-$140-$125-$95

3.0 Diesel Prostock: $2000.00 per class

Payout: 8 places $460-$400-$300-$240-$200-$160-$140-$100

Modified 2WD Truck: $1600.00 per class

Payout: 6 places $460-$375-$230-$205-$180-$150

Modified 4WD & 6000 Extreme Super Stock: $2500 per class

Payout: 8 places $600-$500-$400-$325-$225-$175-$150-$125

9500lb 4.1 Limited Prostock: $3000.00 per class

Payout: 10 places $600-$500-$400-$350-$300-$250-$200-$200-$100-$100

Hook Fee:

1.All classes with the exception of Modified 4WD, 6000 Extreme Super Stock, and 9500lb 4.1 Limited Prostock will be charged a $20.00 hook fee

2.Modified 4WD, 6000lb Extreme Super Stock, and 9500lb 4.1 Limited Prostock will pay 1% of purse for the hook fee.

3.100% of hook fee will be put into the individual class’s point fund. 100% of the one day membership will also be put into the individual class’s point fund.

4.Members must be entered 1 hour prior to scheduled start time. Late entries will be charged a $20.00 late fee, unless a pre-entry has been arranged. If you know you are running late, you should notify the secretary or the class vice president. At that time, the secretary has the authority to draw for your position and enter you for the competition.

5.Tractor may compete in a class different than its own if it complies with class rules.

6.All members will be allowed to pre-commit to any or all of the events that his/her class offers. This will allow member to skip registration process at each pull.

Points

1.Points will be awarded to vehicles that have paid vehicle registration fee.

2.Vehicle will receive show-up points at each sanctioned even—5 points per class—provided vehicle registration and hook fee is paid. If you wish to receive a hook fee back—you will not receive any points for that particular class.

3.Points will be awarded in the following way: 1st place will receive 25 points, and will continue decreasing by 1 point each lower place.

4.Points will be tallied and winners will be awarded at the conclusion of the season.

5.Points will be paid out at the same percentages and the same places as each class purse payout. If a class does not have 8 members, but purse payout is 8, the remaining points fund will go into general fund.

6.A tie in points will be broken by the most first place pulls. If there is a tie on firsts, it will go to the most second, etc.

7.If a vehicle disqualifies on the track it will receive last place points and prize money (if available) for that class.

General Rules

1.All vehicles must weigh at each event for that event only.

2.All decision rendered by the presiding board will be final.

3.Any rule violations will result in contestant being disqualified.

4.Pull begins when hook is placed in the drawbar, and ends when hook is removed and all safety equipment is disconnected.

5.Contestant pulling the furthest distance in the class will be declared the winner. No excessive digging allowed. Pull is considered over when forward motion stops. Distance will be measured from center of sled.

6.Vehicle may begin pull under the green flag only, and must stop when given the red flag at any time during the pull. If the vehicle begins under a red flag, it is disqualified.

7.Contestants pulling position is determined by drawing when vehicle is registered at each event.

8.If sled breaks during the pull, the class will start over.

9.No tarp straps may be used to secure weights.

10.Officials can weigh vehicles and measure hitches after any class has pulled.

11.Absolutely no arguing about prize money.

12.Extra prize money will be pro-rated to the class at the same percentage rate as regular payout, unless fair advised otherwise.

13.Contestants gets 2 pit passes per vehicle.

14.Nitro, nitro methane, any combination of nitro, or nitrous oxide is considered an illegal fuel. Any violation will result in person being barred for 1 year and 10 days.

15.Refer to USPA rule book for the following: Harmonic Balancer/hub shields, fuel system, illegal fuels, fuel pressure gauge, engine deflection shield, drive shaft loops, drive line brakes, u-joint safety shields, manual transmission, kill switch, fire extinguisher, fire wall, flywheel certification, and cooling system catch can.

16.Unsportsmanlike conduct or behavior will result in vehicle losing hook, points, and prize money for that event. 17.Profanity or threats by any puller or member of his pit crew, toward any officers or sponsor of pull, shall because

for suspension of said puller and vehicle for the period of one year and ten days from the date of occur- rence.

18.All drivers in all divisions must wear full fire protection including full face helmets with shield, head sock, fire gloves, fire shoes, neck brace, and SFI certified fire suits. It is recommended that the face shield be in the down position during competition, head socks/neck skirts must be inside of driving suit. Nothing exposed while competitor is sitting in seat ready to compete.

19.Seat belt must be worn at all times while engine is running on track. Driver will be disqualified if he/she hooks to sled without fastening seat belt.

20.Vehicle must pull within three minutes after sled is ready. Track official may drop vehicle with a problem to a later position.

21.All vehicles must be in neutral or park while being hooked or unhooked from sled.

22.No weights or safety equipment may be lost on track while hooked to sled.

23.Puller may locate sled wherever he desires if he notifies the sled operator in sufficient time to have the sled spotted in said location when the sled is returned to the starting line from previous pull. If the proceeding puller did not move the sled past 100 foot mark, the next puller may have the sled relocated prior to attempt.

24.All pull distances will be measured.

25.Vehicle cannot go outside of track boundaries. Sidelines of track continue on even if they are not marked. Xcaliber will place orange cones to mark extension if possible.

26.Sled (not including dirt shields) cannot go outside of track boundaries.

27.Puller is allowed a second attempt if the first does not exceed 100 feet, but puller cannot be unhooked from sled or move the location unless mechanical malfunction occurs, then puller can unhook and come back before class ends. 100 foot distance must be official measurement. If driver attempts to stop before the 100 foot distance, track official may allow second pull after confirming official distance before making decision. Only one attempt allowed in a pull off. If the vehicle goes out of bounds in a pull off, it will place last in pull off.

28.Track judges may suggest to the sled operator to start the class over, after at least 2 vehicles have pulled.

29.Driver will be disqualified if he does not remain seated on track.

30.Pulling vehicle must be operated in a safe manner at all times. Track officials, board members, or presiding officers have the right to stop and disqualify any vehicle not being operated in a safe manner.

31.Vehicle must enter and leave track under its own power unless there is obvious breakage. Each vehicle is allowed 1 pull off each year for spark plug check, but must ask prior to start of class.

32.Weight ballast cannot be moved after entering track.

33.Lead weights must be marked with #lbs and removed upon demand.

34.After first vehicle has made a legal pull, all remaining vehicles must pull that weight.

35.Every vehicle will have 2 attempts to pass the 100 foot mark.

36.All ties will be pulled off if they involve prize money unless those involved agree to split prize money and points, or if the sled operator refuses to pull off due to time or weather, then prize money and points will be divided equally. Ties for places past prize money will split points.

37.No puller may hook to sled knowing the vehicle is broken.

38.Any individual complaints should be directed toward an Xcaliber Pulling Director.

39.All technical checks (Hitch height, weights, P&G, fuel testing and injection pump testing) should be completed 15 minutes prior to pull by an Xcaliber Pulling officer only. Checks may be at any time, at the discretion of the board of Xcaliber Pulling

40.All vehicles must pass safety and technical inspections at the beginning of each pulling season. Inspection will cover every safety and technical rules currently in effect. Inspection forms will be kept on file with secretary. Vehicle will be allowed 1 pull to come into complete compliance on minor technicalities at the discretion of the officers. Vehicle will not be allowed to pull if there is insufficient time to do complete inspection. Once vehicle has passed inspection the vehicle will receive a sticker that must be installed on vehicle.

41.Flywheel certification form is to be filled out every year (if applicable).

42.Any competitor or any of his crew incapacitated due to an intoxicating agent and/or drugs, his or her pulling vehicle will not compete for the duration of the pull. Obvious or excessive consumption of alcoholic beverages before or during the pull will not be tolerated.

43.The contestant who draws the lowest number will be the test puller, and may take his pull if the weight machine is ok or he may immediately take his second pull or he may pull in the 6th position. If the weight machine

needs further adjustment, the contestant who draws the lowest number has the option to take his pull or drop to the 6th position. All previous pullers must follow the puller with the lowest number drawn in order, following the option taken by the first puller after each adjustment of the weight machine.

Track Officials

1.They must be a member of Xcaliber Pulling, and will receive free membership and insurance with Xcaliber Pulling.

2.They must present themselves in a professional manner.

3.There must be one track official on the track during each class at end of track and one track official at 100’ mark.

4.Track officials must keep fully charged fire extinguishers nearby.

5.Track official located at the end of the track is in charge of operations by making sure sled is ready, all people and equipment are clear, and tire ruts are filled in before giving green flag.

6.Track official located at the 100 foot mark is responsible for keeping time for the three minute rule.

7.Track official located at end of track is to ask first puller if he/she is taking their first pull and notify announcer’s stand of the decision.

8.Track official is to check kill switch secure tie to see if engine kill is accidental.

9.Track officials are to receive free pit pass to pulls. If he/she is charged for pit entry, reimbursement will be given from Xcaliber Pulling.

10.Xcaliber Pulling officers will make final decision if track official cannot agree on track related decision.

11.Track officials will be paid per event.

Protest Procedures

1.In all protests, the protestor must notify an officer of Xcaliber Pulling. Not the person being protested, and not a class representative or tech official. Protestor must have a vehicle in the same class as the protested vehicle. Protest must be made within 10 minutes of class completion.

2. In a weight dispute, all vehicles in class must weigh. If a vehicle is found from 1-3% overweight, it is disqualified from the class. Greater than 3% will result in disqualification for 2 years and 10 days.

A. Tractor Protest Procedures

1. Tractor must meet all rules, an individual or group may protest a tractor provided they furnish a $250.00 fee and an additional $250.00 teardown fee to remove head. Cubic inches will be checked by removing the head or pan. Other areas will also be checked. An officer of Xcaliber Pulling will be told that this tractor is being protested and they will inform the individual. The officer will not disclose who the protester is. The tractor will be taken to a secure location and either checked that evening or at a time convenient to all involved. The owner and at least four officers will be present. If the tractor is illegal or owner refuses to tear down, the protester will be given back the money and the tractor, driver, and owner will be banished from all Xcaliber Pulling events for 2 years and 10 days from the date of tear down.

2. An individual or group may protest a tractor provided a $75.00 fee is provided to cover the cost of a fuel, alcohol, and/or water check for both tractors involved (the protested or protestor). This will cover the cost of both tractors involved in the protest to be checked. An officer of Xcaliber Pulling will be notified and given the money. The officer will inform the individual being protested. The officer will not disclose who the protester is. The tractor will be taken to a secure location and either checked that evening or at a time convenient to all involved. The owner and at least four officers will be present. If the tractor is legal, the person protested will receive the money. If found illegal, or owner refuses to the check, the protester will be given back the money and the tractor, driver and owner will be banished from all Xcaliber Pulling events for 2 years and 10 days.

3. 8300 Series injection pump will not be allowed in any Xcaliber class. Maximum size injection pump is a P-Pump with maximum size plungers of 13mm. An individual or group may protest a tractor provided a $1000.00 fee is provided to cover the cost. An officer of Xcaliber Pulling must be notified and given the money. The officer will inform the individual. The officer will not disclose who the protester is. The tractor will be taken to a secure location and either checked that evening or at a time convenient to all involved. The owner and at least four members will be present. If the tractor is legal, the person protested will receive the money. If found illegal or owner refuses to tear down, the protester will be given back the money and

the tractor, driver, and owner will be banished from all Xcaliber Pulling events for 2 years and 10 days from the date of tear down.

B. Truck Protest Procedures

1.An individual or group may protest a truck regarding hitches providing a $10.00 fee is provided from protester. An officer of Xcaliber Pulling must be notified and given the money. The officer will inform the individual being protested. If protestee leaves without being checked the vehicle is disqualified. Officer will check hitches on protested vehicle and two other vehicles that competed in class. If proven illegal the vehicle will be disqualified.

2.An individual or group may protest motor of vehicle. An officer of Xcaliber Pulling must be notified and given the $500.00 fee from protester. The officer will inform the individual being protested. If protestee leaves without being checked or refuses to tear down vehicle will lose all points accumulated, and owner and vehicle will be suspended for one year and 10 days, regardless of any ownership changes. The $500.00 will be returned to protester. If protestee allows tear down, an Xcaliber Pulling officer will tear down motor, removing cylinder head for test. If found illegal, the $500.00 will be returned to protester, and the protestee and vehicle will be suspended for one year and ten days regardless of any ownership changes. Vehicle will also lose all accumulated points for that year. If found legal, $500.00 will be given to protestee for reassembly costs.

3.An individual or group may protest an engine of a competing member by giving an Xcaliber Pulling officer a

$100.00 fee for a P&G check on engine. A qualified Xcaliber Pulling officer will perform the test. If found oversize, members will decide whether to tear down and put up protest money. Owner will have option of D/Q before pulling or tear down after puller’s last hook of the event. The protest procedure for tear down will be followed at that time.

General Tractor Rules

Tractor Safety Equipment

1.All exhaust must be discharged upward. No curved stack or raincaps allowed. Two 3/8 inch diameter bolts placed 90 degrees apart must be bolted through the exhaust as close to the turbo as possible.

2.All tractors must have a fire extinguisher mounted to tractor in an easily accessible location.

3.All tractors must have skid bars that will individually support the tractor weighted to its heaviest class. Skid bars must not be higher than 10 inches off the ground and at least 32 inches from center of rear axle.

4.Tractors must be equipped with a working air shut off (diesel engines) or ignition kill (gas). A 2 inch ring must be attached to the end, and be positioned 48 inches above point of hook, and be no more than six inches off center and must be able to be pulled from the driver’s seat.

5.All tractors must have a spring loaded return to idle throttle.

6.If the tractor has a PTO, it must be covered.

7.Limited Pro-Stock, Super Stock, and Profarm tractors must be equipped with full side shields that cover engine below crankshaft centerline. They must be a minimum of .060 inch thick steel or aluminum. They must be easily removed.

8.All tractors are required to heave a white reverse back up light.

9.All inline pump tractors must have a fuel shut off that has a three way diverter valve and must run back to the fuel tank. It must be able to be pulled from the dash by the driver.

10.Roll cages must be SFI approved for all classes.

11.All tractors must have a quick release steering wheel, swing away column or factory tilt column or steering wheel.

12.Must have 3/8 inch cable between 1-2 cylinders with 2 clamps.

13.Tractor skid plate—front axle skid plate specs for all tractor classes.

A. Skid plate must be mounted inline with each frame rail and extend

from the center of the front axle forward (on both sides) equal in strength to from rail material. Skid plate surface to be a minimum of 4” wide and 12” long with minimum 6” curve when measured from the front most part of rolled edge.

NOTE: Skid plate must be able to support weight of front end when checked with a jack. Maximum ground clearance is bottom of front wheel rim not to exceed 4” with front tires in normal operating position

B. Front axle support to be made of 2.00”X.095” chrome moly tubing or 2.00”X.120” mild steel tubing or

4.3 LM 466 turbo 2.33 inlet max

5.Smooth bore, no slots, slugs, steps wheel must protrude housing 1/8” non-modified housing

6.OEM intake and exhaust housing/manifold

7.OEM cylinder heads

8.No water injection

9.No aftermarket intercoolers (iceboxes)

10.OEM rockershaft housing or factory delete option (No aluminum or steel plates)

11.Tire size 20.8X38 max. Radials allowed. No cut tires allowed.

12.Pressed steel wheels allowed. No aluminum front or back.

13.No tube frames or custom built front axles allowed.

14.No aluminum weight brackets

15.RPM limit 2800.

16.Factory roll over protection (ROPS) required.

17.RPMs monitored with box on sled and Gordyville style hook up.

18.Must follow all Tractor Safety Equipment Rules.

Limited Prostock

1. Cubic inch limits for Limited Pro Stocks are as follows: 6400lb. Class— 410 Cubic Inches—1 turbo or

315 Cubic Inches—2 turbos (diesel) 6100lb. Super Stock—360 Cubic Inches—2 turbos 8500lb. Class—466 Cubic Inches (no inner/after coolers) 9500lb. Class—640 Cubic Inches

2.Engines can be modified up to limit but no tolerance above limit is allowed.

3.Engines may have a steel plate, maximum of 5/8 inch thick, between the block and head.

4.No recasted, billet, or aftermarket head allowed in any Xcaliber Pulling tractor classes with the exception of Extreme Super Stock. Note: Must be able to bolt on stock intake and exhaust manifolds.

5.Tractors may have only one injection pump limited to a P series Bosch with a maximum of one plunger per cylinder. 8300 Series injection pump will not be allowed in any Xcaliber Pulling tractor class. Maximum size injection pump is a P-Pump with maximum size plungers of 13mm.

6.Gas tractors are limited to one four-barrel carburetor. All fuel must be metered through the carburetor’s metering jets. Alcohol may be injected under 20 psi before the turbo (gas tractors only)

7.No inner coolers allowed.

8.All Xcaliber Pulling Tractor classes, with the exception of Extreme Super Stock, must run fuel and water purchased from Stern Oil Co.

9.Maximum tire size allowed for competition in all Limited Pro Stock classes is 24.5” X 32” with a

maximum of 210 inch circumference, when inflated to 10 psi. Tread width not to exceed 25 inches.

6400lb Limited Prostock

1.No Overhead cams allowed.

2.No recasted, billet, or aftermarket head allowed in any Xcaliber Pulling tractor classes with the exception of Extreme Super Stock. Note: Must be able to bolt on stock intake and exhaust manifolds.

3.No component tractors.

4.No inner coolers allowed.

5.Alcohol Super Stock can run diesel head with spark plugs.

6.Maximum tire size allowed for competition in the Super Stock class is 30.5” X 32” with a maximum of 210 inch circumference, when inflated to 10 psi. Tread width not to exceed 32”.

7.Maximum tire size allowed for competition in all Super Farm and Limited Pro Stock classes is 24.5” X 32” with a maximum of 210 inch circumference, when inflated to 10 psi. Tread width not to exceed 25 inches.

6400lb Limited Prostock Turbo Rules:

1. Turbo compressor measurement to be measured at the face of the wheel inlet a maximum of 3.0 inches. The wheel may be no larger than this measurement at the inlet. One map width enhancement groove of .200 allowed. Wheel must protrude into housing 1/8 of an inch. All air must enter through 3 inch hole. Must be 3 inches on both side of map width enhancement groove. At least 1/8 inch on back side of map width enhancement groove must be 3 inch diameter.

2.Exhaust outlet is to be no larger than four inches at the face of the exhaust wheel. Exhaust wheel shall be no larger than 4” at its face and taper back from face evenly with no steps.

3.6400lb Gas Tractors will be allowed to run waste gates.

8500lb Limited Prostock Turbo Rules:

1.The compressor inlet measurement to be measured at the face of the wheel a maximum of 3.0 inches. Tips of wheel must protrude into 3 inch opening at least 1/8 of an inch. Note: Housing may use a reducer or slug if welded in place. No setscrews of provisions to remove slug. Tips of wheel must still protrude into opening.

2.The exhaust outlet measurement to be measured at the face of the wheel a maximum of 4.0 inches. Tips of wheel must protrude into 4 inch opening at least 1/8 of an inch. Note: Housing may use a reducer or slug if welded in place. No setscrews of provisions to remove slug. Tips of wheel must still protrude into opening.

3.No functional waste gates. No air entry after 3 inch opening in compressor or 4 inch opening in exhaust housing. No map width enhancement grooves. No variable geometry turbos. Note: Waste gated exhaust housing allowed, but must be altered to look like non-waste gated exhaust housing. All passages internal and external must be plugged.

4.The maximum allowed clearance on each side between turbine wheel and the 3 inch opening when measured at the 1/8” protrusion not to

exceed .050 maximum. This applies to both intake and exhaust sides.

5.Rules are locked in for 3 years (thru 2014 season).

9500lb Limited Prostock Rules:

1.No component chassis.

2.24.5-32 maximum size tires. HP pulling tires will be allowed.

3.9500 pounds maximum weight

4.No engine larger than 640 cubic inches (+ or—1%)

5.A maximum bore center limit of 4.875”.

6.Deck plate allowed up to .625 thick.

7.Engine must be OEM agricultural-type for that brand of tractor. Cylinder head port location must be same as stock with manifolds using stock port bolt patterns.

8.Aftermarket manifolds allowed and must bolt in original port bolt location.

9.No overhead cams.

10.Maximum 2 valves per cylinder.

11.No inner - after coolers allowed.

12.Maximum size injection pump is a 7100p-pump with maximum size plungers of 13mm.

13.Only pullers performance fuel and water from Stern Oil Company will be allowed. Fuel and Water is available from Stern Oil Company 800-

477-2744.

14.Fuel and water sample valve mandatory.

15.Mandatory turbo for this class is a smooth bore 4.1 Holset from Excel Engineering or Diesel Perfornance built specifically for OTTPA and Xcaliber Pulling. Excel Engineering 641-734-5800 Diesel Performance Engineering 816-324-6680.

16.No points for events co sanctioned with OTTPA, when co sanctioned with OTTPA run their rules.

6000lb Extreme Super Stock

Chassis

1.Only engine considered legal to be used in Super Stock division must be available in 2 wheel drive farm tractors.

2.Maximum distance of 1 5/8 inch deck plate between bottom of cylinder head and top of engine block.

35.Any header upright or down swept is allowed.

36.Front brakes or drive line brakes allowed.

37.Front and rear traction bars allowed.

38.Weight racks will be allowed, but cannot exceed 60 inches from center of front axle to farthest point of weights or rack.

39.Solid suspension allowed.

40.Track official has the right to red flag any truck slipping the clutch excessively or bouncing hard.

41.Foot throttles must be equipped with toe strap.

42.If hood is cut out for air cleaner, must run hood scoop. Hood scoop may be operational at rear.

43.No automatic traction control devices of any kind allowed.

Modified Two Wheel Drive Truck

1.Vehicle must weigh 6200lbs.

2.Limited to one engine.

3.No aluminum engine blocks.

4.Aluminum heads.

A)No Hemi, No Billet

B)Only modification allowed is porting.

C)No external modification

D)Maximum of two valves per cylinder

E)Must have factory OEM port design (i.e. Ford 429 CJ, Chevrolet rectangle port).

F)OEM meaning used in passenger car.

5.No fabricated intake manifolds

6.541 cubic inch limit naturally aspirated

7.Aluminum cylinder heads must fit OEM intake manifolds.

8.Any cast iron head may be used however it will have no more than 2 valves per cylinder

9.No adapter plate that will adapt or modification of heads or intake to accept OEM style bolt pattern intakes.

10.Planetaries are allowed.

11.Drive shaft must be enclosed with 1/8” steel or 3/8” aluminum

12.No four wheel drive lockout front ends.

13.Unused yokes must be enclosed with 1/8” steel or aluminum

14.Maximum wheel base is 15’ from center of rear axle to furthest point forward, unless it is a fiberglass front bumper then it can be 15’6” from center of rear axle to furthest point forward. Does not include tow hitch.

15.Maximum tire size 18.4 X 16.1. No dual wheels.

16.Limited 2 carburetors.

A)Single Carb. must have 2 springs on the primary shaft.

B)Dual Carb. must have 2 springs on primary shaft, one on each side.

17.Fuel injection allowed.

A)Single shaft injectors must have two springs on butterfly shaft.

B)Multiple shaft injectors must have one spring on each butterfly

shaft.

18.Gasoline and alcohol allowed.

19.No scented fuels allowed.

20.All throttles must be positive action, self returning.

21.Foot throttles must have toe strap

22.Truck or car bodies are allowed.

23.Truck must have a presentable bed.

24.Fiberglass bodies allowed.

25.Alcohol engines must exhaust upright.

26.Gasoline engines may have chassis headers, must exit straight to rear.

27.Exhaust shall not blow towards officials or spectators.

28.Headers cannot be less than 18” from center of rear axle.

29.No part of vehicle may extend more than 30” rearward of hitch point.

30.Maximum hitch height 31” for 0-485 C.I.

31.Maximum hitch height 30” for 486-530 C.I.

32.Maximum hitch height 32” small Cepeks

33.Must have sufficient hitch on front to tow vehicle.

34.Trucks will have wheelie bars which will extend 2 inches back from the furthest point of the tires—with a 5 inch square pad on the bottom or a 5X5 inch solid steel or aluminum roller mounted with a 3/4 inch grade 8 bolt that will not turn with the roller.

35.All drawbars must be parallel to the ground no more than 1 1/2” per foor of drawbar fall or increase.

36.No L shape hitches

37.No truck hitches, cam type rear ends drawbar.

38.Hitch must be rigid in all directions

39.No electronics to engage clutch.

40.No electronic traction control devices.

41.Refer to USPA rule book under fuel and fuel containers for fuel rules.

Modified Four Wheel Drive Truck Rules

1.Vehicles must weigh 6200lbs.

2.Limited to a single automotive type engine.

3.Aluminum heads allowed with no more than 2 valves per cylinder.

4.No blowers

5.No turbo chargers

6.Engine must be within engine compartment, all engine components including pump, drive and harmonic balancer must be behind grill in and on the original position

7.Starter is not considered an engine component and may extend through the grill

8.Back of motor must not be in front of center front axle.

9.Any type of transfer case allowed.

10.Any transmission allowed

11.Axles must be centered in wheel well openings.

12.Axle bolts must have a 1/16” metal shield held securely in place.

13.Maximum of 133” wheelbase with 1/2” tolerance

14.No part of the truck may extend more than 60” forward of front axle. Front tow hook excluded.

15.No loose ballast weight allowed

16.Maximum tire size is 18” wide and 34” tall.

17.No dual wheels allowed.

18.All tires must have rubber or rubber compound between tires and ground.

19.Front and rear tires must track within centerline of each other.

A) The way it will be checked is—measure widest wheel base first, outside of tread to inside opposite tread. The narrow axle measurement must be equal to or larger than the wide axle measurement. The track or tread is not the side wall of tire.

20.Racing gas, pump gas, gasohol, or alcohol allowed.

21.No pressurized fuel systems.

22.No M3,M5, or oxygenated type gasoline fuels will be allowed. No nitro based fuels, synthetic nitro fuels, or power enhancing alcohol will be allowed.

23.No oxidizing type fuels

24.Top lube allowed.

25.Fuel protest allowed $50.00 fee plus price of fuel test, $50.00 fee will go to protested puller if found legal.

26.Any 4X4 truck or van body allowed.

27.Must have working driver’s door

28.Fiberglass bodies allowed

29.Must look presentable with no significant body damage

30.Hood may be cut to allow for fuel and exhaust systems.

31.Must use a steel frame, no aluminum or magnesium allowed in frame rails.

32.Non-tinted front and rear glass or Plexiglas required.

33.Must have a full bed floor or bed cover.

34.Headers and open exhaust allowed but must exit up or down and back.

35.Exhaust cannot blow toward audience or track officials

36.Headers must exit up if alcohol fuel is used.

37.Hitch must be furthest point of truck except for safety bumpers.

38.Maximum hitch height 26” to point of hook.

39.Hutch must be solid in all directions and secured no more than 6” from hook point.

40.Hitch must have a minimum of 3”X3 3/4” oval opening.

41.Point of hitch to center of axle shall not be less than 36% of wheelbase.

42.Hitch can not rise before, during or after the pull.

43.No clevis, chain or cable allowed in hitching device.

44.No portion of hitch can be greater than 33 degrees or less than 0 degrees.

45.If drawbar adjuster is attached to rear axle housing it must be attached at centerline or below.

46.Hitch supports from top must be vertical or leaning backward. Hitch supports from the bottom must be vertical or leaning forward.

47.Safety bumpers may extend 6” past hitch.

48.Safety bumpers are not mandatory, but highly recommended.

49.All automatic type clutches require operational inching pedal.

Prostock Diesel Truck Rules

1.Diesel trucks only maximum weight 7800lbs

2.Trucks must be in safe operating condition.

3.No passengers allowed.

4.All trucks must have a three way dump valve (manual) ahead of the injection pump to be operated from the dash panel and air shutoff kill switch that is operated from the rear of the vehicle. The kill switch must have a 2” ring and be mounted directly above the hitch in the center of the tailgate area.

5.Lap belts required and driver’s side window must be down.

6.Trucks must have working brakes

7.Truck must have full size steel or OEM body. The bed floor may be removed and bed gutted.

8.Interior seats may be removed except for the driver’s seat.

9.No fuel tanks inside of cab.

10.All trucks must be weighed at each event.

11.Hitch height to be a maximum of 26”, hitch must be frame mounted and no more than 18” from center of axle to center of pivot pin on hitch and not to exceed 25 degrees. No transfer type hitches, receivers must be made of solid steel with an oblong shaped hole 3 3/4” long and 3” wide. No pulling point above truck frame rails with 44” minimum from center of rear axle to hook point. Rear bumper bars required.

12.All trucks must have three round metal loops shielding on each driveshaft (two piece driveshaft will have 6 metal loops.) 360 degree loop must be a minimum of 3/8” thick aluminum or 5/16” thick steel, 3/4” wide (or wider) and not more than 2” from the shaft in any direction. End loops to be placed no further than 6” from universal joints, with third loop in center of shaft, or can be a solid tube (3/8” aluminum or 5/16” steel) meeting the above requirements.

13.All trucks will have 360 degree metal shield around the universal joints, 3/8” thick aluminum with 1/8” steel insert or 1/2” aluminum or 5/16” steel, minimum width 6”. The insert must be a minimum of 6” wide. Shield must have a minimum of 2” clearance and a maximum of 4” clearance.

14.Axle and hub bolt shield required to be minimum 0.060 thick. Minimum diameter of axle end and hub bolts to be covered on both front and rear axles. Mounting shields cannot be mounted to axle end or hub bolts. A hold may be installed in the center of front shield so lock can be operated, so long as hub end or axle bolts are covered.

15.All vehicles must have a SFI approved clutch and flywheel. An SFI approved blanket is required around bell housing or SFI approved clutch can.

16.Exhaust may exit through hood of vehicle and must point upward. Two \3/8” bolts minimum grade 5 must go through exhaust pipe 90 degrees and within 1” of each other and be mounted as close to the turbocharger as possible.

17.Engine must remain in stock location, maximum of 17” from center line of axle to front of block. Engines may be changed to cross factory lines of manufacturing (Cummins may be put in a Ford or Chevrolet). Factory option engines for 1 ton trucks and lighter are allowed. No superchargers allowed. No aftermarket/recasted

blocks allowed. Deck plates allowed. Engine maximum 460 cubic inches.

18.OEM frame and wheelbase not to exceed 158”

19.Maximum “P” series pump, one plunger per cylinder.

20.One turbo with one pressure stage permitted. Maximum of 3.0” opening on intake wheel. Map width enhancement is not allowed to exceed .250. Compressor wheel must protrude into three inch bore 1/8”. All provisions allowing air to the wheel other than via the bore and map groove are prohibited. One (1) 360 degree map enhancement groove allowed, not to exceed .250 inch in width.

21.Computer chips and auxiliary boxes are allowed.

22.Water (only) injection allowed. No alcohol, methanol, propane, or nitrous allowed.

23.Dual rear wheels are allowed.

24.Weights must be secured and may not extend more than 60” forward from centerline of front axle. Weights may be fastened in the bed and are not allowed in the cab of truck. No tarp straps allowed for any purpose.

25.Aftermarket transmission and transfer cases are allowed.

26.All front axles must have coil or leaf springs and must be in stock location. Adjustable front suspension stops must be mechanical. Pneumatic, hydraulic and electrical adjustable stops are not allowed.

27.Rear suspension may be welded.

28.Traction and ladder bars are allowed

29.DOT street legal tires are only tires allowed. No altered, cut or recap tires. 35” is maximum diameter.

30.All drivers must wear full fire protection including full face helmets with shield, head sock, fire gloves, fire shoes, SFI spec 3.2A-1 driving suit and a full 360 degree neck collar meeting SFI spec 3.3 or a Hahn’s device.

All helmets must meet or exceed Snell 1985 rating or must be SFI 41.2.

31.All pulling vehicles must be equipped with a minimum of 2 lb Halon type or 2 1/2lb dry powder type fire extinguisher, fully charged with gauge, in working condition and convenient to operator.