1. Contest is open to two-wheel drive, rear wheel drive, rubber tired tractors. Max tire size for all classes is 26x12x12.
2. Tech officials will enforce all rules; All tractors must pass safety check and meet class rules to be allowed to compete.
3. Operator must remain seated during pull attempt and must have complete control of tractor at all times. Operator must keep one hand on steering wheel at all times.
4. All drivers must be 8years of age for stock classes, 12 years for Stock Alt, Sport Stock, Pro Stock,and Super Stock, 16 for all other classes.
5. The first puller in eachclass has the option of keeping there first distance or coming back in the 6thposition or last you must decide before unhooking from the sled.
6. Every puller has twochances to go at least 50 feet, you must signal to the flagman before you pass50 ft. If you have driveline breakage before 50 ft you can repair and return inlast position, you have 5 min. after the last puller pulls to attempt yourpull.
7. All pullers must wear a dot approved helmet and long pants, all pullers must wear a fire jacket (except stock) any puller burning methanol must wear full fire suit. Stock Pullers must have long sleeves.
8. All tractors must have functional brakes, steering and a secure seat with a minimum 3” backrest.
9. All tractors must be equipped with a fully charged 1-1/2 lb fire extinguisher.
10. All tractors must have a dead man throttle.
11. All exhaust must discharge vertically +or- 10 degrees; Exceptions to this rule would be the use of stock mufflers or rear engine tractors.
12. All fuel lines must be kept away from hot engine components.
13. All ignition points must be covered to protect from chance of fire.
14. All tractors must have sturdy fenders to protect driver from tires.
15. All weights must be securely mounted on stationary weight brackets.
16. All seats must be stationary
17. All tractors must have adequate stabilizer bars to prevent rear tip over, wheels are allowed, must be strong enough to support tractor and drive at pulling weight. Wheels or pads must be at least 5 inches behind rear tires and not more than 5 inches off of the ground. Use of bump bars is recommended.
18. All tractors must have a sturdy hitch not more than 13” off of the ground. Must have 1 ½ hole and not further back than plain of rear tires.
19. All tractors must have a kill switch mounted at the rear of the tractor and must be easily accessible;it must immediately kill engine and power to electric fuel pump. Must be sturdy ring 1 ½ in diameter.
20. All tractors must have a manual fuel shutoff valve.
21. Flywheels and starter pulleys on all engines turning over 4000rpm must be billet steel or aluminum.
22. All class weights include driver, helmets and coat.
23. All weights must be onstationary weight brackets, no moveable weights.
24. Weights may be repositioned on a false start or re-pull. You must re-weigh if you unhook from the sled.
25. Any loss of weight whileunder green flag will result in DQ.
26 No nitrous oxide or compressed gas of any kind allowed.
27. During the course of competition no part of the tractor can touch the boundary lines or disqualification will result. The sled may go out of bounds. The flagman makes the decision.
28. All engines in all classes must be naturally aspirated, except (open class).
Stock Class:
1. All general and safety rules apply, must be 8 years ofage.
2. The Maximum Rpm for this class is 3800rpm for 15 to 18 hpengines and 4000rpm for 14 hp and lower.
3. Must maintain stock appearance and utilize stock sheetmetal, Sheetmetal can be changed from brand to brand (John Deere on Cub Frame) but frame can’t be altered.
4. Heads must retain factory gasket lip.
5. Only stock OEM parts non-altered.
6. Factory Carb for engine it is being used on. No intakestandoffs or velocity stacks allowed.
7. Maximum horsepower rating is 18hp, V-twins not allowed.
8. All stock tractors must be commercial lawn and garden type with commercial built stock engine with max. of 30 over stock bore and stock internal parts, rear-end and transmission. Differentials and Driveline can be modified for safety and durability. No locked rear-ends. Stock gears in stock position in transmission.
9. Chassis must be of original wheel base, stock framelength, may be modified for engine swap. Must have stock front axle in stocklocation.
10. Maximum length is 8 foot from center of rear axle to farthest point forward.
Stock V-twin:
1. All general and safety rules apply, must be 8 years ofage.
2. The maximum RPM is 3800.
3. Maximum of 25hp rating flat heard or V-twin. Must usefactory stock Carb for engine, No modifications to Carb, Must use OEMnon-altered internal parts.
4. Heads must retain factory gasket lip.
5. Must use factory stock sheet metal and retain factory appearance. Sheetmetal can be changed for brand to brand (John Deere on Cub frame) but frame can’t be altered.
6. Front axle can be factory or tube type, can be movedforward as long as it is within the factory frame.
7. Frame can be modified for engine swap, rear-end mustremain in stock position.
8. Gears can be changed in Transmission.
9. Maximum length is 8 foot from center of the rear axle tofarthest point forward.
Stock Altered:
1. All general and safety rules apply, must be 12 years ofage.
2. No RPM limit for this class.
3. Flathead or V-twin engines allowed.
4. 1,200 Carb size. No air entering after 1,200restrictions.
6. Engines must be factory production or their OEMreplacement.
7. Billet Heads allowed on Single Cylinder engines.
8. Must have factory head bolt pattern.
9. No reverse port engines allowed.
10. Max Valve lift is .330” measured at valve stem.
11. Max Carb spacer of 1”. Only factory intake manifolds.
12. Must use factory stock sheetmetal, frame and retain factory appearance. Sheetmetal can be changed for brand to brand (John Deere on Cub frame) but frame can’t be altered. Maximum wheelbase of 52”.
13. Must run factory Transmission.
14. Methanol or Gas, No additives.
15. Maximum length is 8 foot from center of the rear axle tofarthest point forward.
Sport Stock:
1. All general and safety rules apply, must be 12 years ofage.
2. No RPM limit for this class.
3. Flathead or V-twin engine allowed.
4. 1,200 Carb size. No air entering after 1,200 restriction.
6. Must be OEM Engine or it copy (Julian Block, Jones orWoolam).
7. Billet Head allowed on Flatheads only, V-Twins must haveOEM heads.
8. Must have factory head bolt pattern.
9. No reverse port engines allowed.
10. Must use factory stock sheetmetal, frame and retainfactory appearance. Sheetmetal can be changed for brand to brand (John Deere onCub frame) but frame can’t be altered. Maximum wheelbase of 56”.
11. Must run factory Transmission.
12. Methanol or Gas, No additives.
13. Maximum length is 8 foot from center of rear axle to farthest point forward.
Missouri Super Stock:
1. All
general and safety rules apply, must be 12 years of age.
2. Must be
Garden Tractor Type Engine(Kohler, Briggs, or Tecumseh).
3. Only
Flathead Single Cylinder engines allowed Maximum Cubic Inch 37.5 stock stroke
Crankshaft.
4. Limited
to one single Carb Max of 1.200. No air entering after 1.200
restriction.
5. Must be
OEM Engine or it copy (Julian Block, Jones. or Woolam).
6. Billet
head allowed, must maintain factory head bolt pattern.
7. Camshaft
and Crankshaft must remain in Factory position.
8. No
reverse port engines allowed.
9.Must use
factory stock sheet metal, frame and retain factory appearance. Sheet metal can
be changed for brand to brand (John Deere on Cub frame) but frame can’t be
altered. Maximum wheelbase of 56”.
10. Must
run factory Transmission.
11.
Methanol or Gas. No additives.
12. Maximum
length is 8 foot from center of rear axle to farthest point
forward.
Pro V-Twin:
1. All general and safety rules apply, must be 12 years of age.
2. No RPM limit for this class.
3. 48 Cubic Inch. Must be OEM Block or its copy.
4. OEM or Recast Heads allowed.
5. Any single Carb.
6. Any Cam Any Lift.
7. Maximum Wheelbase 56:, Maximum length 8’ from center of Rear Axle to farthest point forward.
8. Must have Grill and Hood.
9. Must run Factory Transmission.
10. Any Tractor Legal for Sport Stock can complete in this class under there own rules.
Super Stock:
1. All general and safety rules apply, must be 12 years ofage.
2. No RPM limit for this class.
3. Single Cylinder 50.5 cubic inches or smaller engines.
4. Open Carb
5. Must be OEM Engine or its copy (Julian Block, Jones orWoolman).
6. Must be factory stock sheetmetal, frame and retain factory appearance. Tube frames permitted according to NQS rules.
7. Maximum wheelbaseof 56”.
8. Must run factory Transmission.
9. Methanol or Gas, No additives.
10. Maximum length is 8 foot from center of rear axle tofarthest point forward.
11. Must have grill and hood.
Pro-Stock:
1. All general and safety rules apply, must be 12 years ofage.
2. No RPM limit for this class.
3. Single Cylinder 50.5 cubic inches or smaller engines.
4. 1,200 Carb Size. Must be Kohler Type Carb. No air entering after 1,200 restriction.
5. Must be OEM Engine or its copy (Julian Block, Jones orWoolam).
6. Must be factory stock sheetmetal, frame and retain factory appearance. Tube frames permitted according to NQS rules.
7. Maximum wheelbase of 56”.
8. Must run factory Transmission.
9. Methanol or Gas, No additives.
10. Maximum length is 8 foot from center of rear axle to farthest point forward.
11. Must have grill and hood.
Super Stock Open:
1. All general and safety rules apply, must be 12 year ofage.
2. No RPM limit for this class.
3. Maximum of two cylinders (can be two singles) 54 cubic inch OHV or OHC, 70 cubic inch Flathead. Max of 4 vales total.
4. Must be OEM Engine or its copy (Julian Block, Jones, or Woolam).
5. Any type of Natural Aspirated induction permitted.
6. Must use factory stock sheetmetal, frame and retain factory appearance. Tube frames permitted according to NQS rules.
7. Maximum wheelbase of 56”.
8. Must run factory Transmission.
9. Methanol or Gas, No additives.
10. Maximum length 8 foot from center of rear axle to farthest point forward.
11. Must have grill and hood.
Super Mod:
1. All general and safety rules apply, must be 16 years ofage.
2. No RPM limit for this class.
3. Motorcycle, Snowmobile or Garden Tractor Engines only airor water cooled, max of 4 cylinders (can be 4 singles or 2 twins).
4. Maximum engine displacement is 1500cc total.
5. Engines must be naturally aspirated.
6. Maximum of 4 barrels of carburetion total.
7. Methanol or Gas, No additives.
8. Maximum length of 8 foot from center of axle forward.
4 CylinderMini-Rod:
1. All general and safety rules apply, must be 16 years ofage.
2. No RPM limit for this class.
3. Maximum of 4 cylinders. Must be OEM type automotive engine cast or aluminum.
4. Maximum of 2 or 4 valves per cylinder, maximum of 1 spark plug per cylinder.
5. Engines must carbureted and naturally aspirated.
6. Maximum length of 8 foot from center of rear axle to furthest point forward.
7. Methanol or Gas, No additives.
8. Super Modified tractors can run in this class under thereown rules.
Open Class:
1. All general and safety rules apply, must be 16 years ofage.
2. No RPM limit for this class.
3. Maximum of 4 cylinders.
4. Maximum length of 8 foot from center of rear axle to furthest point forward.
5. Methanol, Gas or Diesel.
Weight Classes:
1050 lbs for Stock, V-Twin Stock, Stock Altered, SportStock, Super Stock Open, Pro Stock, Super Stock, Pro V-Twin, and Missouri Super Stock
1250 lbs for Super Mod
1350 lbs for 4 cylinder Mini Rod
1300 lbs for Open
All tractors will weigh at or below class weight, drivermust be seated when weighing and hitch measured.
Spring Shootout 
