2013- Late Model Rules
General Rules: Track officials may supersede any rules of the Late Models.
Track officials reserve the right to approve or translate any rule to proper safety or legality.
Tech and race directors have final say on any rulings.
Drivers are responsible for all of his/her crew/family members. Drivers can be disciplined for inappropriate actions.
Heat races are lined up by pill draw on first night of the season. Rest of the season, heat races and main events will be lined up by inverting qualified cars point averages, everyone else will be lined up heads up. This may be changed for special events.
All cars must pack track upon requests, not packing may lead to starting scratch for the heat and main event (all night, if running more than a heat and main).
All cars will have transponders mounted on the motor plate of the car.
Any car, team and/or driver that does not meet these specifications and/or equipment requirements will be subject to penalties as determined by the Late Model Series Officials or Track Management.
A. Only conventional type V-8 engines with the cam in the block will be permitted. There will be no limit on the cubic inch displacement.
B. Rev Limiter Box must be out of reach of driver and will run at 7000 RPM limit.
C. Aluminum Blocks Allowed. SEE WEIGHT RULES.
D. All engines must be normally aspirated with a single conventional-type four (4) barrel carburetor.
E. The engine must have an operating self-starting mechanism Vehicles that require a push start will not be permitted.
F. Only a single distributor will be permitted. Coil pack and/or engines that have individual ignition systems, electronic or mechanical for each cylinder will not be permitted.
G. A maximum of 25�� from the center of the ball joint to the front of the motor plate/engine bell housing flange will be permitted. *(See Stock Front Clip Rule)
H. Only two (2) valves and one (1) spark plug will be permitted per cylinder.
I. Dry sump systems are permitted.
1.1 Transmission/Driveline and Driveline Components
a. Direct drives systems of any-type will not be permitted.
b. The transmission must be bolted to the engine it must have forward and working reverse gear(s) and must be able to shift to forward or reverse with engine running.
c. All cars must be equipped with a working self-starter.
a. The driveshaft must be a minimum of 2" in diameter. All drive shafts must be painted white.
b. Only one (1) drive shaft connected from the transmission to the center of the rear end will be permitted.
c. A minimum of one (1) driveshaft hoop/sling must be fastened securely to the frame. It is recommended that two (2) driveshaft hoops slings be used.
1.3 Rear End
a. Any type of rear end differential / center section will be permitted.
b. Live-axle type rear ends will not be permitted.
c. Independent rear suspensions will not be permitted.
d. Floater-type wide-five hub assemblies will be the only hub assemblies permitted.
2.0 Fuel, Fuel Cells and Fuel System
A. All cars must have fuel cells that meet and/or exceed FT3 specifications. The fuel cell must have a maximum capacity of 32 gallons.
B. The fuel cell must be enclosed completely in a container that is a minimum thickness of 20-gauge magnetic steel and/or .060" aluminum.
C. The entire container must be visible for ease of inspection.
D. The fuel cell must be mounted behind the rear axle between the rear tires, a minimum of 4" ahead of the rear bumper. The bottom of the fuel cell must not be any lower than the bottom of the rear end/quick change housing.
E. The fuel cell must be mounted with a minimum of two (2) .125" thick steel straps. The straps must cover the entire cell. Fuel cells that are mounted in a square tubing frame will be permitted. 3/8 OR 7/16 minimum ASTM Grade 8 bolts must be used to mount the fuel cell to the frame.
F. The fuel pick up must be positioned on the top or right side of the fuel cell and be constructed of steel. The fuel pick up must have a check valve.
G. Only racing gasoline or alcohol will be permitted for competition. Nitrous oxide, nitro-methane and/or propylene oxide will not be permitted.
H. For the purpose of inspection, the driver and/or crew must be prepared to drain fuel upon request for inspection and/or measurement.
I. Fuel cells must have a Flapper Valve installed or an air craft style locking fuel cap.
J. Only mechanical and/or belt driven fuel pumps will be permitted. Fuel injection system(s) and/or electrical fuel pumps and/or any type of pressurized fuel system will not be permitted.
3.0 Exhaust Muffler and Sound Reduction Devices
A. All exhaust systems/headers must end with a collector. Must have one (1) muffler per side. MUFFLERS ARE REQUIRED.
4.0 Traction Control Devices
A. All electronic and/or computerized wheel spin and/or ignition retardation and/or acceleration limiting and/or traction control devices of any type will not be permitted.
B. Adjustable ping control devices, dial a chip controls, timing controls and/or automated throttle controls will not be permitted.
C. Adjustable restrictor plates will not be permitted.
D. Remote control components of any-type will not be permitted.
E. Radios and/or devices for transmitting voice and/or data will not be permitted.
F. Data acquisition systems will not be permitted.
G. Anyone caught with any of the above, will be subject to disciplinary actions including fines, loss of points and any monies.
A. The minimum wheel base will be 103A. The minimum wheel base will be with a maximum wheel base of 105". *(See Stock Front Clip Rule)
A. The minimum wheel base will be 103" with a maximum wheel base of 105". *(See Stock Front Clip Rule) with a maximum wheel base of 105". *(See Stock Front Clip Rule)
B. All frames must be fabricated from magnetic steel with a minimum of 2" x 2" or approved rectangular magnetic steel with a minimum material thickness of .083".
C. A minimum of 1.75" Outside Diameter magnetic steel tubing, 4130 Chrome Moly or DOM with a minimum material thickness of .083", will be permitted for frames that are fabricated from round tubing.
D. Rear bumpers that are stubbed may only extend a maximum of 8" beyond the frame. Any stubbed rear bumper that extends further than the maximum 8" must be formed and directed 8" toward the front of the car.
E. External rub rails will not be permitted.
F. All cars must be equipped with a tow hook and/or strap for the purpose of towing.
G. All battery supports and/or mounts must be secure and braced in two (2) horizontal positions and one (1) vertical position or approved by Tech Director.
A. The total weight of the car with the driver will be:
CT525 Crate Engine -2350
602 Crate Engine - 2250
604 Crate Engine - 2300
Any Open Engine - 2350
ALUMINUM BLOCKS - 2350 - with 50lbs in front of motor plate. ( total 2400 lbs. )
Maximum weight of any car with driver will not exceed 2650 lbs.
B. Weights up to 50 lbs must be positively fastened by 2", minimum grade 5 bolts with a minimum of two (2) weight clamps. Threaded rods will not be permitted. All weights must be painted white and clearly labeled with the car number on it.
C. Any weight(s) must be securely attached to the frame below the body decking.
D. Any car that loses any weight/ballast during an event may be subject to a penalty.
E. Pellet-type and/or liquid-type weight/ballast will not be permitted.
F. Driver operated weight adjustment, weight jacking devices will not be permitted.
7.0 Body (Refer to diagrams 1 - 5 attached)
7.1 Overall Appearance
a. The car must be neat in appearance and must display the car number on the front nose and the rear fuel cell. The minimum height for the number will be 6".
b. The car must have legible numbers on each side and on the roof a minimum of 18" high.
c. The driver's last name must be placed in legible letters on both doors or the rocker panels.
7.2 General Body
a. All cars must have a minimum half-inch (1/2") and a maximum of one (1") inch radius at the top of fenders, doors and quarter panels. Sharp edge(s) will not be permitted.
b. The floor boards and firewall must completely cover the driver's area with no openings.
c. Fins and/or lips of any-type will not be permitted anywhere along the entire length of the car.
d. The body line must be a smooth even line from front to rear.
e. Wedge shape cars and/or body styles will not be permitted.
f. Belly pans or any type of enclosure on the bottom of the car will not be permitted. A skid plate to protect the oil pan is permitted. A maximum 1/8" skid plate will be permitted.
g. Wings and/or tunnels and/or any type of air deflection device will not be permitted underneath the body and/or chassis of the car.
h. 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 18" x 18" and only mounted from the upper right frame rail to the lower right framer rail.
i. Panels of any type under the rear deck running from the front to the rear of the car will not be permitted.
j. Any style air cleaner scoop used must be positioned in front of/or around the air cleaner and must not exceed 1" in height above any part of the air cleaner. Any type of flange and/or air deflection device and/or fin that is designed to direct airflow will not be permitted.
k. Cockpit adjustable components with the exception of brake bias adjusters will not be permitted. Adjusters of any-type, including but not limited to adjustable shocks, hydraulic or pneumatic weight jacks, trackers, ignition boxes or similar adjustable components will not be permitted inside the cockpit of the car or within reach of the seated driver.
a. Only approved nosepieces may be used, they are as follows:
MD3 Performance Bodies
Five-Star MD3 type
b. All nosepieces must be made of molded type material.
c. Two piece noses must be positively fastened together in the center. Spacers added to gain width will not be permitted.
d. The nosepiece must be mounted in a manner that does not alter its original shape.
e. The nose shall remain flat above the nose lip/wicker bill. Alterations and/or additions may be made to this area other than cooling holes will not be permitted.
f. The nosepiece can extend a maximum of fifty two inches (52") from the center of the front hub to the farthest point extending forward.
g. The nosepiece must display a headlight decal package. A one-race grace period, running contrasting color tape in the shape of a headlight will be permitted.
a. The roof length from front-to-back must be a minimum of 44" with a maximum of 54".
b. The roof width from side-to-side must be a minimum of 48" to a maximum of 52".
c. The roof must be stock appearing and be mounted level to the height of 48".
d. The minimum height of the roof will be 45" with a maximum height of 48".
e. The roof must be mounted parallel to the body and near the center of the car as viewed from the front of the car.
f. A maximum 1-1/2" roll, turned downward will be permitted along the front of edge of the roof. A maximum 1" roll, turned downward, will be permitted along the rear edge of the roof. These modifications will be permitted to improve the strength of the roof. Any other modifications to the roof will not be permitted.
g. Flat and/or odd shaped roofs will not be permitted. Bellied and hollowed roofs will not be permitted. 4.3.8 Any sun-antiglare shields may not exceed a 4" drop from the top roof line, and must hinge for easy exiting.
h. A maximum of two (2) roof edge bead rolls of a maximum height of �� the length of the roof will be permitted.
i. The roof posts and spoiler support(s) may not overlap.
j. Only single plated roofs will be permitted.
k. The maximum thickness of the roof at any point will be ��.
l. The roll cage and associated frame members above the interior panels (decking) must remain open. Enclosures will not be permitted.
7.5 Roof Supports and Window Side Panels
a. All roof side panels must extend to the edge of the body.
b. The roof side panel window size must be a minimum of 10" x 15" and must match drawing number -2- side view. A maximum crown of two (2) inches will be permitted, measured from the center of a common tangent point on either side of the crown.
c. The side window area may be covered with clear Lexan and/or equivalent type material, be cut out and/or represented by a decal. Both roof support openings must be covered and/or both must be left open. The left and right side openings must be the same size with a tolerance of one (1) inch.
d. The left and right side window panels must match.
e. A maximum bow of two (2) outward on the window side panels as viewed from behind will be permitted.
f. The front roof supports up to 2 in width must extend forward to the rear of the hood.
7.6 Front Fenders, Fender Flares and Hood
a. The hood and the front fenders must be level and flat from the left to the right side of the car.
b. The outside edges of the hood and/or the fender must remain inside the overall bodyline.
c. The front fender may be a maximum of 37" in height, measured vertically from the ground to the top of the fender behind the front tires.
d. The front fender flares must be made of plastic and must not alter the original shape of the nose piece.
f. The front fender flares must be flat across the entire width of the car.
g. The front fender flares must have collapsible supports.
a. The door-to-door measurement must not exceed 76" in width at the top of the doors.
b. The door-to-door measurement must not exceed 82" in width when measured at the bottom of the doors in the center of the car.
c. The doors must not exceed 37" in height when measured from the ground to the top of the door.
d. The door sides may not break inward from the top 76" and bottom 82" measurements. Hollow and/or belled doors will not be permitted.
e. The minimum ground clearance will be 3".
7.8 Quarter Panels
a. The maximum distance from the center of the rear hub to the top quarter of the panel is fifty three inches (53").
b. The quarter panels must not exceed 76" in width at any point as measured at the top of the panels.
c. The rear deck must taper in a symmetrical manner from the center of the rear hub to the rear spoiler with a maximum width of 72".
d. The maximum width for the quarter panels measured from outside-to-outside measured 19" from the ground and/or at the bottom of the quarter panel will be 86".
e. Any breaks and/or bends formed in the sides of the quarter panel that move the panel toward the center of the car will not be permitted. Hollow and/or bellied panels will not be permitted.
f. The maximum distance from the center of the rear hub to the rear trailing edge of the quarter panel will be 48".
g. The maximum height from the ground to the top of the rear deck at the top of the rear quarter panel is 38".
h. A minimum of 2" of tire clearance between the tire and the body will be required.
i. Skirting that extends behind the rear quarter panel will not be permitted.
7.9 Spoilers and Spoiler Braces/Supports
a. Only aluminum and/or Lexan and/or Lexan-type rear spoilers will be permitted.
b. The maximum overall height of the rear spoiler will be 8". The maximum width of the rear spoiler, including braces and/or supports is 72".
c. The rear spoiler must begin at the deck and extend 8" from that point. Suspending the spoiler to create a wing-type device will not be permitted.
d. The rear spoiler must begin at the rear most point of the quarter panels.
e. Only four spoiler braces/supports will be permitted. The front edge of the spoiler brace/support must be in line with the spoiler.
f. The outside spoiler supports must not be mounted any-wider than the top of the quarter panel(s) and must be centered on the rear deck.
g. In the event that aluminum angle is used to bracer the upper edge of the spoiler, the angle must not add to the height and/or length of the spoiler in any way.
a. The interior of the cockpit must be a minimum of 11" below the top of the roof and/or roll cage, measured perpendicular to the ground from the bottom of the roof to the cockpit deck. Roof rolls are not part of the measurement.
b. The side window opening(s) must be 15" from the top of the door to the bottom of the roof.
c. Support bars that block the right window from the driver exiting the cockpit will not be permitted.
d. A single rock guard (Lexan screen) tapered back from the steering wheel to the height of 1" in the line with the driver's chest providing the 11" minimum clearance is met at any point from the roll cage to the body and/or rock guard.
e. If the interior deck drops the drop must begin at the rear of the engine plate with a maximum of 4" and must not drop below 4" rear of the hood. The start of the dropped interior must remain closed as a part of the fire wall. The entire width must be closed off with sheet metal.
f. The interior must gradually taper up to the quarter panel height and must be level for a minimum of 20" from the rear of the quarter panel and deck.
7.11 Driver Compartment
a. A full metal firewall fabricated from magnetic steel and/or aluminum must encompass the driver's compartment from front-to-rear, on both sides and floor boards.
b. The driver's seat must be a high back aluminum seat, designed specifically for racing, located on the left side of the car and mounted per the manufacturer's instructions securely to the frame.
c. The seat design should be one from a current manufacturer and/or recommended to include the full containment design. Installation of the full containment seat should follow the manufacturer's instructions.
d. All cars must be equipped with a quick-release type steering wheel.
e. The driver compartment must have a starting switch and/or button within reach of the driver.
f. A clearly labeled electrical on/off 'kill' switch must be within reach of the driver is recommended.
g. Mirrors of any-type will not be permitted.
h. Radios and/or electronic and/or data communications devices will not be permitted.
i. Any edge and/or sheet metal end in and around the driver compartment must be protected with trim and/or beading and rounded. Sharp and protruding edges will not be permitted.
j. A substantial rock guard with a minimum of three (3) additional roll bars must be mounted in front of the driver. The rock guard must be made from wire screen. Windshield screens must be a minimum of .090" and must be securely fastened.
k. A fully charged fire extinguisher meeting SFI 167.1 specifications with an activation push and/or pull knob within reach of the driver is recommended.
A. All cars must be equipped with an operating four wheel disc brake system.
B. Electric or manual right front shut offs are permitted.
8.1 Shock Absorbers
a. All shock absorbers must be constructed of magnetic steel and/or aluminum.
8.2 Suspension Components/Springs
a. Coil springs must be magnetic steel.
b. Leaf springs may be composite material or magnetic steel.
9.0 Roll Cage
A. All cars must have a roll cage fabricated from a minimum of 1-1/2" outside diameter with .065" thick seamless magnetic steel tubing.
B. The side roll bars and/or door bars must extend into the door panels.
C. A minimum of three (3) bars must be utilized on the left side of the car in the door area. IT IS RECOMMENDED TO HAVE A MIN. 18 GAUGE DRIVERS SIDE DOOR PLATES. MANDATORY IN 2011.
D. Any of the bars that are utilized for the top portion of the roll cage, including, but not limited to the front and rear hoops, the top hoop and the uprights, must extend a minimum of 1" above the driver's helmet.
A. Only steel or aluminum wheels will be permitted for competition.
B. The wheels must be mounted to the hubs utilizing lug nuts.The wheels must be mounted to the hubs utilizing lug nuts. 'Knock off' and/or single type wheel mounting systems will not be permitted.
C. The maximum wheel width that will be permitted is 14".
D. The maximum front track width will be 90" and the maximum rear track width will be 88", measured from the outside edge of the tire to the outside edge of the tire.
E. Wheel spacers will be permitted provided the track width(s) do not exceed their maximum dimensions.
A. Chemical alterations, vulcanizing, tire softening, defacing and/or altering the face of the tire lettering and/or tire stamping will not be permitted. Chemicals or tire softening is not permitted at any time. Tires may be inspected at any time. Any violation with any tire presented for competition may result in immediate disqualification from the events and/or other penalties including but not limited to; loss of money, fine, loss of points and/or suspension.
B. Tire clearances from body at least 2".
C. All tires are subject to durometer testing at any time.
D. Hoosier D55 Spec tires, Hoosier WRS Spec tires and Hoosier WRS2 Spec tires 11 x 86, 88, 90 and 92. Hoosier D55 E (Economy).
E. There will be no defacing or altering of manufacturer's identification markings on any tire.
F. You may not remove any letters, words, or numbers that would identify the tire.
G. Any alteration of tires may result in disciplinary actions, including suspension from all Late Model sanctioned events.
H. No tire softener of any kind.
I. All wheels must fit template with 14" maximum width.
J. Mud plugs should be foam or bolted securely to the wheel behind bead lock.
K. Tire grooving and siping are allowed. De-glazing of tire is permitted.
12.0 Stock Front Clip
A. 108" Wheel Base
B. Motor Set Back - 78" minimum from motor plate to center of axle tube.
C. 8" Steel Wheels Hoosier DCM400 Tire or H-84
D. 7600 RPM Limit Box must be out of reach of driver
E. Same body rules as Late Models
F. Weight 2350 lbs.
If stock front clip cars choose to run the Hoosier D55 Spec tires, they will also have to run the 7000 RPM chip.