Friday May 5th, 6pm
YOU MUST BE REGISTERED BY 5:30 TO PULL
THREE CLASSES OF PULLING
All trucks must be 1990 and older with 400 hp and under.
No 4×4 or 6×6 will be allowed to pull in this class, single and tandem axle only.
All trucks must be a production truck.
This class is for STREET LEGAL semi trucks. Trucks in this class are expected to be driven regularly on the highway. An RPM limit of 2500 is to be followed. This is truly an open class for all semi trucks, but it is definitely NOT a PURE STOCK class.
LEGALITY OF CLASS
Truck must be capable of pulling a trailer on the highway.
No riders are permitted in the truck during pull attempt. Driver will not leave the drivers seat while vehicle is on the pulling track unless instructed by the flagman. Driver will take ALL DIRECTION from the flagman on the track.
This hitch must work from the fifth wheel. The hitch height is 24″. The sled operator will provide hitches at each event. Hitch height will be measured by a tech official before pulling.
The use of air bags is permitted. However no air may be added to or removed from the air bags while the truck is hooked to the weight transfer machine. The height of the hitch must remain the same from start to finish. Any change in the hitch height will be cause for disqualification.
WEIGHT OF TRUCK (20,000 LB MAXIMUM)
No added weight or ballast is permitted. The truck must be weighed before pulling. Any truck over 20,000 lbs. can pull for exhibition only.
MODIFIED SEMI TRUCK RULES
1. Vehicle must be stock appearance for that make, model and year of truck.
2. All competition vehicles must have a firewall between the engine compartment and the driver’s compartment. No holes except for controls. Holes must be no larger than ½” in diameter than the control that passes through.
3. It is recommended that a fire suit, driving shoes, driving gloves, fire-proof head sock and helmet is worn.
4. All competition vehicles must have universal joint shields. Any shaft longer than 90″ must have safety loops. Driveline shields must be 360 degrees with a minimum of 3/16 steel.
5. Fans must have fiberglass blades. No steel blades allowed. A complete shroud must encircle the fan area (360 degrees) and be securely attached. A heavy fiberglass shroud is highly recommended.
6. All vehicles must have working brakes on all rear wheels.
7. All exhaust systems must discharge vertically. No rain caps are permitted. Turbo charged engines must have two 3/8″ grade five bolts in some portion of the exhaust pipes. These bolts must be installed within 1″ of each other and at a 90 degree angle to each other.
8. A fire extinguisher (minimum 2.5 pound dry powder type) is required and must be in working order with gauge fully charged. Fire extinguisher must be within drivers reach.
9. All vehicles must be equipped with a securely fastening lap belt with a quick-opening clasp. The lap belt must be worn when the vehicle is hooked to the sled.
10. All vehicles must be in neutral when being hitched or unhitched from the weight sled. Drivers hands must be off the steering wheel and visible to the track official at the same time.
1. Only tandem drive axle semi trucks will be permitted to compete. No front wheel drive will be permitted. No single axle trucks. No dump trucks. No specialty trucks (well-drilling, wreckers, boom trucks, etc.) will be permitted to compete.
2. Airbags or air springs and/or all mechanical lift mechanisms on front steer axles are NOT permitted.
ENGINE AND TRANSMISSION
1. One production-available commercial truck engine only will be permitted. Engines must have been available in road use trucks. No multi-engine vehicles may enter any competition. No non-commercial truck engines (car, pick-up truck, aircraft, etc.) are permitted. No specialty engines such as Arias, Keith Black, Rodeck, etc. are permitted.
2. Only 2 air stages are permitted on the engine-turbo- charger (or) super chargers.
3. All turbos must be mounted under the hood.
4. Ether bottles used as starting aids may be permanently mounted to the vehicle using an OEM system. All lines must be completely visible and traceable.
5. Transmissions and rear ends must be commercial semi-truck factory components.
6. All automatic transmissions must be covered and protected by an approved blanket.
8. All flywheel housings must be covered with and protected by an approved blanket.
9. Only mechanically activated clutches are permitted.
10. A diverter valve that will permit fuel to return to the fuel tank in case of an emergency is required.
1. Maximum hitch height will be 18″.
2. A minimum of a 3″ wide x 3-3/4″ long hole is required for chain hook.
3. Trucks are required to pull from the standard 46″ sled chain.
1. All vehicles must have an operable kill switch on the right side of the hitch and located directly in line with the point of hook. A minimum of a 2″ solid ring is required for connection with a minimum of 1/8″ cross sectional thickness. The sled cable will be attached to this ring.
2. On all diesel engines, the kill switch must activate the air shut off. Shut off must be placed ahead of any turbo-chargers. A cable may be used for this purpose, but must have positive-type enclosed cable for the shut off. This cable must be 100% free of any obstructions. The shut off must have a spring-loaded closing mechanism. System to be deemed acceptable must at least prevent any building of boost. Control for the driver will not be the same as for the sled.
3. Diesel engines with an electric fuel pump must have a break-away plug that will attach to the kill cable. This break-away plug must break all contact to the fuel pump and cause the fuel pump to immediately stop.
4. Diesel engines are required to install a minimum of a manual ball shut-off ahead of the fuel supply that can be operated within easy reach of the driver.
5. All semis must be equipped with a master disconnect.
6. Kill switch ring must be secured with a single nylon tie wrap (1/8″). The tie wrap must be broken in order for a re-pull to be approved.
1. All tires must be road use approved tires and available to the public. Dual wheels and tires must be used on the rear axles. No chains or cables permitted. Maximum tire size limited to: 11×24.5 x 8.25 (or) 10 x 22 x 8.25.
2. No tube type tires allowed. No spoke type wheels. Wheels must be Budd type.
WEIGHTS OR ADDED BALLAST
1. Maximum weight for any truck will be 20,000 pounds. All trucks must weigh before the event with a tech official.
2. Weights cannot extend rearward more than 51 inches from the center of the rear axle. (Weights included)
3. Weights cannot extend more than 24″ from the farthest point of the vehicle.
4. Weights must be securely mounted. If a weight hits the track during competition (under green flag), vehicle will be disqualified.
5. Weights must not interfere with the hooking of the sled to the hitch.
6. No movable weights are permitted during competition, such as hydraulic controlled weight racks or boxes.
*** ALL TRACK OFFICIAL’S DECSIONS ARE FINAL. ***