Late Models

2013 Late Model Rules

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official. The officials shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.

Safety

Helmets are mandatory and must meet Snell SA2000, SA2005, or SA2010 safety standards. Helmet must be worn at all times when car is on the track and must accompany car to tech inspection. SFI rated fire resistant drivers suits, gloves, shoes, neck brace or head and neck restraint are required and must be worn during competition. A minimum 5-point SFI rated racing seat belt is required must be mounted to the frame and chassis. Belts must be under 3 years of age, with original OEM tag intact and unaltered. Aluminum racing seats are required and must be securely attached to the frame and chassis.

Body

Conventional aluminum dirt late model body must match diagram. Flat roofs only, no dished roofs or side panels. No fins, wings, or lips of any kind allowed on the car. No wedge style bodies. Must have 3 protection bars in front of driver. Mud screens must be attached securely but not impair the vision of the driver. No Mirrors. All cars must have secure pick-up loops installed front and rear. Numbers must be at least 18 inches high and easily readable, located on both doors and the roof.

Spoilers

Rear spoilers made of aluminum or lexan only. Must be securely attached to rear deck of car along entire width. Maximum width is 72”. Adjustable spoilers allowed. Gurney flaps or curls are allowed along the upper edge of the spoiler but will be included in the height, aluminum angle used to brace the upper edge of the spoiler will not. Spoiler sides must be present on both sides and be solid.

-Open/spec engine car: Maximum 8” material height. Triangular spoiler braces must match body diagram.

-Crate engine car: Maximum 12″ material height. Rectangular spoiler braces must match body diagram.

Chassis/Suspension

Professionally built conventional steel dirt late model chassis only. Rack and pinion steering allowed. Quick release steering wheel required. Roll cage diameter minimum is 1.5” with tubing not less than .083 thick. Car must have at least 3 door bars of the same material mounted horizontal on the driver’s door. Square tubing not allowed in cockpit area. No in-cockpit adjustable suspension devices, brake bias adjustment only.

Engines

6″ engine setback measured from top of upper ball joint to #1 plug maximum.

-Open Engine: GM heads must have 1-2-1 exhaust. No canted valves and no more than one spark plug and two valves per cylinder.

-Spec Engine Option: May run complete IMCA or SUPR Spec Engine package with spec aluminum heads.

-Crate Engine Option: Must use unaltered sealed GM 602 or 604 crate engine. Any different, altered or missing GM seal bolts will result in disqualification, loss of points for the season, event pay, forfeiture of illegal engine to Salina Speedway and $1,000 fine before driver may compete again at Salina Speedway. GM seal bolt exception is Salina Speedway approved and issued cable-lock repair system. $250 fine, disqualification and loss of points and pay for event for any crate engine not using proper GM rev limiter, pushrods, valve springs, rocker arms or other valve train components.

Wheelbase

Minimum wheelbase will be 103” on both sides measured from center of front hub to center of rear hub.

Wheels

Maximum 14” steel or aluminum wheels. Foam or disc type mud plugs allowed and must be bolted on behind beadlock.

Tires

-Open engine car: Hoosier D55 WRS/WRS-2 allowed. Grooving and siping allowed. No softening allowed. All tires must durometer at least 55 at all times.

-Crate motor car: Hoosier D21. Siping, grooving, and grinding is allowed. All tires must durometer at least 45 at all times.

Brakes

Four wheel brakes required during inspection. Right front shut off allowed during competition.

Driveshaft

Must be a minimum of 2″ in diameter. Must be equipped with a 360 degree drive shaft loop installed at the front of the shaft. Driveshafts must be painted WHITE.

Battery

One battery only securely mounted to chassis outside driver’s compartment.

Fuel System

One two or four barrel carburetor only.

-Open engine: Gasoline or alcohol only. No additives of any kind allowed.

-Crate engine: Gasoline or alcohol only. No additives of any kind allowed. 2” maximum spacer on 602 crate motor, 1” maximum spacer on 604 crate motor.

Fuel Cell

Maximum 32 gallon allowed. Fuel cell must be encased in steel can and secured by at least 2 straps, minimum 2” wide by 1/8” thick or 1“ inch square tube cage. If fuel cell does not have aircraft style positive seal filler neck/cap system – a flapper, spring or ball type filler rollover valve is required. Fuel vent check-ball valve is required.

Exhaust

-Crate engine car: Round tube headers only. All primary header tubes must enter directly into one collector, at same point, at end of header. Tri-Y headers OK.

Transmission

Transmission must have at least 1 forward and 1 reverse gear. If running external clutch explosion-proof bell housing required. Flywheel safety shield is mandatory for automatics. Car must be able to move forwards and backwards on its own at any time from a standing start.

Rear End

-Open engine car: Closed tube quick change only.

-Crate engine car: Floater 9 inch Ford (2012 only) or full size closed tube quick change rear end only.

Ignition/Electronics

No unapproved cameras, transmitting or listening devices (exception is one-way RACEceiver radio by officials), timing retard controls or electronic monitoring computer devices capable of storing or transmitting information except memory recall tachometer. All components must be out of reach of driver but accessible for inspection. All un-terminated wires and connectors must be taped closed or removed. No electronic or other traction control devices allowed at any time working or not. $1000 fine and forfeiture of traction control device if caught with any type of traction control on Salina Speedway property. All wiring must be visible for inspection.

-Open engine car- Single ignition only. Internal or external single setting rev control allowed. No additional ignition accessories allowed.

-Crate engine car: Single ignition box or module only with one internal or external non-adjustable high-end rev-limiter chip. No Magnetos. If using external rev limiter, must use MSD #8728 or #8738 rev-control. Rev-control must be out of reach of driver and accessible for inspection with rev limiter chip facing upward. 602 crate maximum 6200 RPM chip. 604 crate maximum 6800 RPM chip. $100 fine and loss of pay and points for event for rev limiter infraction.

Weight

Track scales are final. Competitors are encouraged to weigh before the event.

Open Engine Car (Steel Block): 2400 lbs.

Open Engine Car (Aluminum Block): 2400 lbs.

Spec Engine Option: 2350 lbs.

604 Crate Engine Car: 2200 lbs.

602 Crate Engine Car: 2150 lbs

Diagrams: