Classes Class Numbers
1050 Lb. Stock 100 - 149 1050Lb. 250 cc Motorcycle 150-199
1150 Lb. Pro Modified 250 - 299
1300 Lb. Small Bike 650cc 300 - 349
1300 Lb. Super Bike 1350cc 350 - 399
1500 Lb. Mini Rod 4-cyl 400 - 499
1500 Lb. Open 800 - 899
1700 Lb. Econo Modified 8-cyl. 500 - 599
1950 Lb. Modified 8-cyl 600 - 699
3500Lb. 2wd Modified Truck 700 - 799
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1050 Lb. Stock
1. Stock engine only not exceeding 14 HP and 32 cubic inches from the OEM,
maximum .030" over bore.
2. 0.330 Maximum cam lift.
3. Maximum 1" venturi carburetor.
4. Throttle to be run through a working governor, 4000 rpm maximum.
5. Porting and polishing is not allowed.
6. Gasoline or diesel only.
7. Maximum tractor length shall not exceed 6'6" from center of rear axle.
8. Tractor must have hood and grill.
9. Maximum drive tire size: 23x10.5x12.
10. Transmission gear ratio changes allowed.
11. Drivers up to 17 years of age and/or High School.
NOTICE: At two hook events, if 7 or more stock tractors register in either stock class, the pull in that class for the day will be run as an elimination event. All registered tractors will pull in the first pull, however only the top 5 will pull in the second pull. See general rules for points explanation.
1050 lb. 250 cc Motorcycle
1.250 cc maximum stock engine only
2.Single or twin cylinder 2 or 4 stroke
3.Carburetor only, no modifications, no porting and polishing, no fuel injection, no computer controlled engines.
4.Pump gasoline only
5.OEM Garden Tractor rear ends and transmission- gear ratio changes allowed
welded or Locked rearends allowed
6.Auxiliary gear boxes allowed
7.Jackshafts allowed
8.Maximum drive tire size: 23x10.5x12. Tires may be cut
9.Maximum Tractor Width 48 inches
10.Maximum tractor length shall not exceed 6’6” from center of rear axle to furthest point forward
11.Modified frame are allowed
12.Must have hood, grill and fenders in place
13.Fenders and seat combination to have side arms and back with minimum height of 8 inches or tractor to have fall off protection with sides of seat and rear of seat to have minimum height of 8 inches . (Roll cage or roll bar optional) .
14.Fenders to cover minimum 1/4 of tire width and cover front of tire to frame and return to rear with minimum of 4 inches past back of seat
15.Wheelie bars and kill switches required to follow TMTPA rules
16.All chains to be covered
17.13 inch hitch height maximum Hitch point to be 6 inches of center of rear axle
18.Must have working brakes
19.Long pants, closed toe shoes required. (Fire suits recommended)
20.Drivers up to 17 years of age
21.All TMTPA General rules apply
1150 Lb. Pro Modified
1. Any combination of engines allowed, excluding automotive, motorcycle,
snowmobile, or ATV type engines.
2. Gas, alcohol, or diesel only. Propane injection allowed on diesels only, see rule
# 6 under "Tractor" in General Rules.
3. Turbochargers allowed on diesels only.
4. Maximum tractor length shall not exceed 6'6" from center of rear axle.
5. Maximum tire size: 26x12x12.
6. All other modifications allowed.
1500 Lb. Motorcycle (Small Bike and Super Bike)
Small Bike maximum 650 CC OEM, Super Bike maximum 1350 CC OEM. All other rules are the same for the 2 classes.
1. Gas or alcohol only.
2. Hood and grill optional.
3. Tractor must be equipped with a minimum 3/8 inch cable securely attached to
differential housing or frame, extending around hitch point so that it lies within
sled hook.
4. Naturally aspirated motorcycle engines only.
5. Tractor width shall not exceed 60". Maximum tractor length shall not
exceed 8' from center of rear axle.
6. Rotating parts and chains must to shielded top 180 degrees with minimum 1/8"
steel or 3/16" aluminum. Frame rails may be considered shielding if made of
proper thickness.
7. Maximum drive tire size: 26x12x12.
1500 Lb Mini Rod 4-cyl
1. Engine must be OEM block not to exceed 4 cylinders.
2. Gas, alcohol or diesel fuel only, turbochargers and superchargers allowed.
Superchargers must have adequate restraint to prevent blower lift off.
3. Diesel engine tractors only may run any combination of propane injection,
methanol/water injection, or nitrous oxide injection as power adders only. For
propane injection, see rule # 6 under "Tractor" in General Rules.
4. All tractors with flywheels must have SFI approved housings or the clutch,
pressure plate and flywheel must be shielded 360 degrees with minimum 4" wide
x 3/16" steel or 1/4" aluminum.
5. Automatic transmissions must have SFI approved scatter blanket or scatter
shield.
6. Rotating parts and drive chains must have the top 180 degrees shielded
with minimum 1/8" steel or 3/16" aluminum. Frame rails may be considered
shielding if made of proper thickness. Drive shafts with u-joints on both ends
must have loop(s) within 4" of each u-joint.
7. Tractor must be equipped with a minimum 3/8" cable securely attached to
differential housing or frame, extending around hitch point so that it lies within
sled hook.
8. Tractor width shall not exceed 60". Maximum tractor length shall not exceed 8'
from center of rear axle.
9. Maximum drive tire size: 26x12x12.
10. Drivers in this class must be at least 14 years old.
Requirements for the following classes are the same as the Mini Rod 4 Cylinder class except for any listed changes.
1500 Lb. Open
1. Any tractor pulling in this open class must meet all general safety rules and other regulations.
2. Any engine or combination of engines allowed.
3. Maximum tractor length shall not exceed 8' 6" from center of rear axle, width not to exceed 60".
4. Maximum drive tire size: 26x12x12
5. The 800 - 899 numbers apply only to tractors built specifically for this class. Any others competing in this class may run current class number.
1700 Lb. Econo Modified 8-cyl
1. Engine must be OEM block not to exceed 8 cylinders.
2. Naturally aspirated engines only.
3. Gas or alcohol only.
4. Single carburetor only.
5. No aluminum heads.
6. Drivers in this class must be at least 16 years old.
1950 Lb. Modified 8- cyl
1. Naturally aspirated engines only.
2. Gas or alcohol only.
3. Maximum drive tire size: 31x15.50x15.
4. Maximum width 72".
5. A 4 point frame mount roll cage of round or square tubing with .090 wall thickness
and 1 ½" minimum o.d. recommended. Cage must enclose the driver and be
capable of supportng the competion weight of the tractor. Mininum 4 pt safety
harness recommended. Minimum requirement will be a rollbar at least .125 thick
x 2" o.d., and of adequate height and placement to protect driver in event of a
rollover. Lap belt also required.
6. Drivers in this class must be at least 17 years old.
3500Lb. 2WD Modified Truck Rules Click Here
TMTPA OFFICIALS DECISIONS AND DIRECTIVES ARE FINAL AND TMTPA OFFICIALS RESERVE THE RIGHT TO REFUSE ENTRY TO ANY PULLER OR TRACTOR.
PULLING WITH US IS MORE THAN JUST A DRAG!
