DIRT TRACK WORLD CHAMPIONSHIP Late Model Series
Car Specifications
1. BODIES:
(1-A) Nosepiece and roof must match body style of car. (1-B) All cars must have a minimum of one inch (1") and a maximum of two inches (2") roll at top offenders, doors and quarter panels. A sharp edge will not be permitted. Body roll must go from sides over upper body, not upper body over sides.
(1-C) Floor boards and firewall must cover the driver's area and be constructed to provide maximum safety.
(1-D) Legible numbers, at least eighteen inches (18") high are required on each side of the car and on the roof.
(1-E) The number(s) must be on the front nose and rear fuel cell and be a minimum of six inches (6") in height.
(1-F) No fins or lips of any kind are permitted anywhere along the entire length of the car.
(1-G) The body line must be a smooth even line from front to rear. (1-H) No wedge cars are permitted.
(1-1) All cars must use corresponding engine. EXAMPLE: Ford-Ford, Chevy-Chevy, Mopar-Mopar.
(1-J) No "belly pans" or any type of enclosure on the bottom of the car is permitted. A skid plate to protect the oil pan is permitted. (1-K) No wings or tunnels of any kind are permitted underneath the body or chassis of the car. A maximum of one (1) stone deflector, for rear mounted oil pumps, oil filters, and for the main oil tank will be permitted. The deflector may be made of steel, aluminum, or heavy gauge wire. The cover may only be mounted near the unit it is designed to protect with a maximum size of 18x18 in. and mounted only from the upper right frame rail to the lower right frame rail. (1-L) All non-approved bodies, will be assessed a fifty pound (50#) minimum weight penalty.
(1-M) No panels of any kind under the rear deck running from the front to the rear of the car.
(1-N) Any air cleaner scoops used must be positioned in front of or around the air cleaner and can not exceed one inch (1") in height above any part of the air cleaner. The scoop cannot extend more than twenty inches (20") forward of the center of the cleaner. The scoop cannot be designed with fins or raised edges to direct airflow. The scoop cannot extend behind the rear of the air cleaner and must have a maximum width of seventeen inches (17") at the rear, with a maximum often inch (10") width at the front and cannot have more than one inch (1") opening from the hood in height at the front.
(1-O) No adjustable shocks, hydraulic or pneumatic weight jacks, trackers, MSD boxes or similar adjustable components of any kind are permitted inside the cockpit of the car. Taping over of any adjuster is not permitted. The offending comoonent must be removed from the cockoit.
2. STOCK NOSEPIECES:
(2-A) All stock nosepieces must be approved by D.T.W.C. Technical Inspector.
(2-B) Nosepieces must be made of molded type material.
(2-C) Two piece noses must be fastened together in center. No spacers to gain width are permitted.
(2-D) The nosepiece must be mounted so as not to alter its original shape.
(2-E) No material can be removed from the nosepiece. No cutting from bottom, top or sides is permitted.
(2-F) No adding to the bottom of the nosepiece in the front achieve lower ground clearance is permitted.
(2-G) A stock nosepiece can extend a maximum of forty-eight inches (48") from the center of the front hub to the farthest point extending forward.
(2-H) Front fender flairs must be made of plastic and cannot alter the original shape of the nosepiece. The front fender flairs cannot extend beyond the front tire more than one inch (1") in width with wheels pointed straight.
(2-I) Front fender flairs must have collapsible support.
(2-J) The nose piece must have a headlight decal package attached. One warning will be permitted and then the car must run contrasting color tape in the shape of a headlight.
3. ROOFS & ROOF SUPPORTS:
(3-A) The roof length size must be a minimum of forty-four inches (44") to a maximum of fifty-four inches (54").
(3-B) The roof width size must be a minimum of forty-eight inches (48") to a maximum of fifty-two inches (52").
(3-C) The roof must be stock appearing and be mounted level.
(3-E) The roof height must be between forty-five inches (45") and forty eight inches from the ground.
(3-F) The roof must be mounted parallel to the body and near the center of the car.
(3-G) A maximum one and one half inch (1.5") roll, turned downward, is permitted along the front edge of the roof. A maximum one inch (1") roll, turned downward, is permitted along the rear edge of the roof. (The roll is permitted to help strengthen the roof).
(3-H) No flat or odd shaped roofs are permitted.
(3-I) Any sun/antiglare shields may exceed a 4" drop from the top roof line, and must hinge for easy exiting.
(3-J) All roof side panels must extend to the edge of the body. Roof side panel window size must match the dimensions in the drawings. The window area may be covered with clear Lexan or transparent material. Both roof support openings must be covered or both must be left open. Decals will be permitted but must meet the dimensions in the drawing and must be approved by the Technical Inspector.
(3-K) Front roof supports are permitted to be two inches wide and extend to the
back of the hood.
4. FRONT FENDERS AND HOOD:
(4-A) The hood and front fenders must be level and flat from the left to the right side of the car.
(4-B) Fenders are not permitted to gain height from the rear to the front of the car.
(4-C) No part of the fender or the hood can be outside of the body line.
(4-D) The front fender can be maximum of thirty six inches in height. Height is measured vertically from the ground to the top of the fender behind the front tires
5. DOORS:
(5-A) Door to door cannot exceed seventy-six inches in width at the top of the doors.
(5-B) Door to door cannot exceed eighty two inches in width at the bottom in the center of the car.
(5-C) Doors cannot exceed thirty-six inches in height measured from the ground
(5-D) At no point can the door sides break in towards the center of the car between the top and bottom measurements.
(5-E) The minimum ground clearance permitted is three inches.
6. QUARTER PANELS:
(6-A) The maximum distance permitted from the center of the rear hub to the top corner of the quarter panel is fifty three inches.
(6-B) The quarter panels cannot exceed seventy-six inches at any point on the top.
(6-C) The quarter panels cannot exceed eighty inches from center to bottom.
(6-D) The maximum distance from the center of the rear hub to the end of
the quarter panel is forty eight inches.
(6-E) The maximum height permitted from the ground to the top of the deck is
thirty-seven inches.
(6-F) No offset quarter panels are permitted. Quarter panels must run in line
with the doors.
(6-G) Tire clearance from the body must be a minimum of two inches.
(6-H) No skirting is permitted to extend behind the quarter panel.
(6-1) At no point can quarter panel sides break in towards the center of the car.
7. SPOILERS:
(7-A) The rear spoiler must be manufactured of adequate strength material such
as Lexan or Aluminum.
(7-B) The maximum length of the rear spoiler is eight inches. The maximum
width of the rear spoiler is seventy-two inches.
(7-C) The rear spoiler is not permitted to be suspended above the deck to create
a "wing effect".
(7-D) The rear spoiler must begin where the quarter panels end.
(7-E) No more than three spoiler supports are permitted. The front edge of the
sooiler suooorts must be in line.
(7-F) Spoiler supports cannot be mounted wider than the top of the quarter
panel.
(7-G) Spoilers will be measured according to the total length of and width of the
material, in any shape or form. If an aluminum angle is used to brace the upper
edge of the spoiler, it may not add to the spoiler height or length in any way.
8. INTERIORS:
(8-A) No area of the interior of the cockpit can be less than twelve inches below the roof and the roll cage for safety and easy exiting of car from either side measured straight up and down. Side windows must have fifteen inches minimum opening, at angle to door. No support bars are permitted to block the right window exit from the cockpit. The rock guard must end at the steering wheel for 12" clearance and easy exit on right side of the car. (8-B) Dropped interiors may begin no further forward than the rear engine plate with a maximum of 4", and cannot drop below 4" of the rear of the hood. The start of the dropped interior may not be open, as this forms part of the fire wall. The entire width must be closed off in sheet metal.
(8-C) The interior must gradually taper up to the quarter panel height and be level for twenty inches from the rear of the quarter panel and deck.
9. DRIVER COMPARTMENTS:
(9-A) A full metal firewall must encompass the driver's compartment - front, rear,
both sides and floorboards. Aluminum or sheet metal is permitted.
(9-B) The driver's seat must be of a proper Racing Seat design, located on the
left side of the car and securely attached to the frame.
(9-C) The use of at least an approved five point seat belt system including a
crotch belt is required. The system is to be mounted to the frame and not to the
floor pan. The mounts must be run at the same direction, as the belts are
intended to secure the driver. The belt webbing must be protected from any
sharp cutouts in the sheet metal or any other sharp edges. The date on the belt
must not exceed 5years.
(9-D) All cars must have a quick-release type steering wheel.
(9-E) All cars must have a working starter, operated from inside the car.
(9-F) No mirrors are permitted.
(9-G) No radios are permitted in the car or on anyone connected with car.
(9-H) The edges around the driver's cockpit must be suitably protected with trim
or beading. Care must be taken not to have any sharp, jagged or rough
fasteners, brackets or anything else that could snag the driver's suit when the
driver exits the car.
(9-I) A substantial rock guard must be mounted in front of the driver.
10. FRAMES:
(10-A) No aluminum frames or front clips are permitted.
(10-B) The wheel base width must be between a minimum of one hundred three
inches and maximum of one hundred five inches. (10-C) All frames must be of steel construction and must be a minimum of two
inches by two inches square, or rectangular, with a minimum material thickness
of .083 inches.
(10-D) If a round tube frame is used, the tubing must have a minimum of one and
three quarter inch outside diameter, with a minimum material thickness of .083
inches. These frames must use 4130 Chrome Moly Steel or DOM for
construction.
(10-E) If the rear bumper is stubbed, it may only extend a maximum of eight
inches beyond the frame. Any stubbed rear bumper that extends in excess of
eight inches beyond the frame must be rounded and directed towards the front of
car eight inches.
(10-F) No external rub rails are permitted.
(10-G) It is recommended that all cars be equipped with a tow hook or strap.
(10-H) All battery supports must be braced in two axis - two horizontal and one
vertical.
11. ROLL CAGES:
(11-A) Cars must have a suitable steel cage in the driver's compartment
including a head rest.
(11-B) Side roll bars are mandatory and must extend into the door panels.
(11-C) A minimum of three bars must be used on the left side of the car. Each
bar must be a minimum of one and one-half inch in diameter with a minimum
thickness of .065".
(11-D) The roll cage must be welded to the frame.
(11-E) The roll cage must be above the driver's helmet.
(11-F) Any "fin-shaped or foil-shaped" add-ons to any part of the roll cage must
be constructed of steel and must not exceed a maximum of seven inches total
circumference
12. ENGINES:
(12-A) Only V8 engines will be permitted with no limit on cubic inch displacement,
(12-B) Engines must be based on a factory design and must be naturally
aspirated. Aluminum or steel blocks are permitted.
(12-C) Magnetos are permitted. However, the engine must have an operating sell
starter.
(12-D) The engine is permitted to be set back a maximum of six inches from
center of the ball joint to the front of the foremost spark plug hole.
(12-E) The carburetor is limited to 1 four barrel unit.
(12-F) All engines are limited to one spark plug and two valves per cylinder.
13. TRANSMISSIONS:
(13-A) No direct drives are permitted. The transmission must be bolted to the engine, and must have forward and reverse gears and must be able to shift to forward or reverse with engine running. All cars must be self starting.
14. DRIVE SHAFTS:
(14-A) All drive shafts must be a minimum of two inches in diameter. All drive
shafts must be painted silver or white.
(14-B) Only one drive shaft is permitted.
(14-C) The driveshaft must be protected with a secure driveshaft hoop or sling.
15. REAR ENDS:
(15-A) Any type of rear end differential is permitted. (15-B) No "live axle" rear ends are permitted. (15-C) No independent rear suspension is permitted. (15-D) Only floater "wide five" hub assemblies are permitted.
16. BRAKES:
(16-A) All cars must be equipped with a four wheel disc braking system.
17. SHOCKS:
(17-A) Shocks must be constructed of aluminum or steel. Remote reservoirs are permitted.
18. SPRINGS:
(18-A) Coil springs must be steel. Leaf springs may be composite or steel.
19. TRACTION CONTROL DEVICES:
(19-A) All traction control devices utilizing wheel sensors or any means of
measuring ground speed to control wheel spin are strictly prohibited.
(19-B) Adjustable ping control devices, dial a chip controls, timing controls, or
automated throttle controls are NOT permitted in the cockpit or any other position
accessible to the driver.
(19-C) Any remote controlled components inside or outside the cockpit of any
competitor's race car are NOT permitted.
(19-D) No data acquisition systems are permitted.
(19-E) Any competitor found with any of the above will be disqualified.
20. WHEELS:
(20-A) Steel, aluminum, carbon-fiber or plastic wheels are permitted. (20-B) The wheels must be mounted with lug nuts. No "knock-off mounting devices are permitted.
(20-C) The maximum wheel width permitted is fourteen inches. (20-D) Wheel spacers are permitted provided they do not cause the front track width to exceed the ninety inches maximum or rear track to exceed the eighty-eight inches maximum measured outside to outside of the tire.
21. TIRES: (Any approved brand of tire that follows below specs.)
(21-A) All tires may have a maximum size of 11" by 29" by 15", unless specified
otherwise.
(21-B} Maximum circumference - ninetv-three inches. (21-C) Maximum width (sidewall to sidewall) sixteen and three-quarters inches -No Tolerance. Tire Hoops will be used, and must pass freely over tire.
22. FUEL SYSTEMS:
(22-A) All cars must have fuel cells to FT3 specifications - 32 gallon maximum.
Fuel cell must be in a completely enclosed 18-gauge steel container. All
containers must be completely visible. The driver must be prepared to drain fuel
upon request for measurement.
(22-B) The fuel pick up must be on the top or right side of the fuel cell, be
constructed of steel and must have a check valve in case of roll over.
(22-C) Racing gasoline or alcohol is permitted. No nitrous oxide, nitromethane, or
propylene oxide is permitted. Fuel may be checked at any time.
(22-D) The FT3 fuel cell must be securely mounted behind the rear axle between
the rear tires, a minimum of four inches ahead of the rear bumper, no lower than
the quick change housing. It must be mounted with a minimum of two .125 inch
thick steel straps two inches wide around the entire cell. All cells must be
securely mounted to the frame. The bolts used to mount the fuel cell must be a
minimum of 7/16".
(22-E) No fuel injection system or electrical fuel pumps or any type of pressurized
fuel system is permitted. Only mechanical or belt driven fuel pumps are
permitted.
23. EXHAUST:
(23-A) The exhaust is not permitted to be directed towards ground. (The exhaust must be parallel to the ground so as to disturb as little dust as possible.) (23-B) All headers must end with a collector.
24. WEIGHT:
(24-A) Any attached weights must be securely attached to frame, painted white
or bright silver and have the car number clearly displayed on them. Weights of up
to 50 pounds must be secured by two half inch Grade 5 bolts on two weight
clamps. Weights secured by one bolt and/or held on by a means other than
accepted by the Tech Inspector will not be permitted. NO ALL THREAD will be
permitted. Due to the high risk factor involved, any car that loses lead weight
during an event may be fined or face disqualification.
(24-B) No weights may be attached to rear bumper.
(24-C) No lead pellets or liquid weights are permitted.
(24-D) No driver-operated weight adjustment devices are permitted.
(24-E) The total weight of the car with the driver must not be less than 2300 track
scale pounds.
(24-F) After any heat, last chance or feature, an additional weight allowance will
be given at the rate of 1 Ib. per lap for fuel burn off. 10 laps = 10 Ibs.; 50 laps =
50 Ibs.; 100 laps =100 Ibs., etc. Allowance will also be given for laps run under
caution, at the discretion of the D.T.W.C. Officials. Minimum weight 2300 Ibs.
25. MISCELLANEOUS:
(25-A) No pit boards are permitted.
(25-B) No flashlight signals are permitted.
(25-C) Hand signals are the accepted communication with the driver. Colored
gloves are permitted.
(25-D) No car will qualify without Tech Inspector approval. All cars must be
available for inspection prior to the advertised time of the driver's meeting.
Following the drivers meeting, covers of any type are prohibited until the feature
is completed. All race cars are subject to inspection by officials at any time.
26. DRIVERS EQUIPMENT:
(26-A) A Snell SA95 or newer spec full face helmet is mandatory for all events
including track packing.
(26-B) A clean quilted, or with nomex type underwear, one piece flame retardanl
driver's suit to DIRT specifications is mandatory for all events including track
packing.
(26-C) Flame retardant gloves and shoes are mandatory.
(26-D) Driver suits, gloves, shoes and helmets must be presented at Tech
Insnection |