2014 Yellow Jacket Towing Sportsman Modified Rules


1.1 Engines

A.)  The General Motors (GM) Engine part number #88958602/192558602  is the only engine permitted in all Freedom Speedway Sportsman Modified events 

B.)  The engine and all components must remain in their original configuration and form as purchased and/or delivered from the factory.  Any alternatives to the engine will not be permitted.  The Engine must remain as manufactured by General Motors with a stock 4”-inch bore.  Overbore(s) will not be permitted.  Sleeve repair may be permitted with written permission from Freedom Speedway officials.

C.)  All engines are to remain sealed from the factory.  The original factory seals must remain unaltered.  Tampering, removal, modifications of any type and/or broken factory seals will not be permitted.  The GM Engine must remain unaltered in any way.

D.)  The GM Crate Engine seals (bolt-type) must remain unaltered.  Freedom Speedway Officials may require specific sealing and verification of all seals on any GM Crate Engine.  Tampering with and/or alteration of any seals will not be permitted and is subject immediate penalty and/or suspension.  Only RUSH and DIRT car seals will be accepted in the event of an engine repair.

E.)  On GM replacement parts of any type will be permitted for any type of replacement and/or repair, Part Number #10212811.

F.)  GM Crate Engine repairs must be authorized by Freedom Speedway and RUSH Racing Series.  GM Crate Engine repair procedure works as follows:

          1.) Contact RUSH Racing Series office at 724-964-9300.

          2.)  RUSH Racing Series Officials will provide a list of Freedom Speedway and RUSH authorized engine repair facilities and instructions to the driver/owner to take the engine to get an estimate.  List of Freedom Speedway and RUSH authorized engine repair facilities will be released soon.

          3.) Based on the estimate and the detail of the repair, Freedom Speedway and RUSH Racing Series Officials will determine if the repairs may be made of if a new engine must be purchased.

          4.)  If a repair is approved, a specified RUSH Inspector will inspect the engine and work with the RUSH Authorized  Engine Repair Facility throughout the duration of the repair to ensure that the engine maintains the GM  Specifications.

          5.)  Upon completion of the repair(s) the engine will be `resealed` using RUSH seals before being released for competition.

          6.)  All part including the gasket repair kit(s) must be stock OEM GM Performance replacement parts.  RUSH Authorized Engine Repair Facility must retain all receipt(s) generated from the GM Performance Dealer and/or parts department and also provide said copies of receipts to Rush Racing Series office before RUSH seals are released to RUSH Authorized Engine Repair Facility.  It is highly recommended that driver/owner also maintain a copy of repair paperwork in his possession at all times while competing at a RUSH sanction event and is “required” if competing at a DIRT car event.

          7.)  Overbores will not permitted.  If a cylinder has scoring and/or needs repair it must be communicated to RUSH office before being sleeved  to maintain the original bore size.

          8.)  Valve jobs will not be permitted.  Valves may be lapped.

          9.)  If the cylinder head requires resurfacing and/or valve seats, a new cylinder head must be purchased. Machine work of any type will not be permitted to the cylinder heads.

        10.)  Bead blasting and/or any polishing and/or any alteration to the intake manifold and/or cylinder heads will not be permitted.

         11.)  The distributor advance curve and/or all parts must remain stock as manufactured.

         12.)  All engine information regarding repairs and/or engine introduction must be retained by RUSH Authorized Engine Repair Facility and turned into Freedom Speedway and RUSH office at 4368 US 422, Pulaski, PA 16143 to be recorded into repaired engine database, including the driver, owner, serial number, repair, type of repair, and/or what type of service was performed to any engine.

        13.)  If any repair estimates come back to Freedom Speedway and the RUSH office that meet and/or exceed 80% of the actual price of a new engine, a new engine must be purchased.  The engine that was damaged will no longer be eligible for completion.

G.)  RUSH Racing Series Officials reserve the right to technically inspect, exchange and/or confiscate any GM Crate Engine at any time.  Failure to surrender the engine and/or submit the engine for inspection equals disqualification for the night’s event, loss of all Series points to date, suspended fro the Series competition for 365 days, and fined $1,000.  Fine must be paid in full to Series by cash or certified check in order to compete once suspension period ends.

H.)  The intended direction of the GM Crate Engine program is to maintain a cost-effective, affordable racing program.  Rebuilding, balancing, blue printing and/or any other alteration made in attempt to influence the integrity of this program will not permitted.  The judgment and determination of any such decision will be at the sole discretion of RUSH Racing Series Officials.

I.)  The engine must be centered in the front of the chassis and placed in an upright position.

J.)  Engine set back will be as follows; Minimum is 56”-inches and a Maximum of 66”-inches with a tolerance of ½”-inch (+/-).  The setback will be measured from the centerline of the front axle to the rear machined surface of the engine bell housing.

K.)  Protest procedures and penalties/fines to be released at a later date.

1.1    Carburetor / Air Cleaner

A.)  Only one (1) 650 cfm Holley carburetor. Part Number 4777 or 80777 or Holley HP Carburetor Part Number 80541-1 will be permitted.

B.)  All engines and all components must remain in their original configuration and form as purchased and/or delivered from the factory.  Any changes will result in disqualification from the event.  Any alterations to the engine will not be permitted.

C.)  4777 and 80777 Option:

          1.)  The carburetor must maintain the stock venture and throttle bore dimensions.

          2.)  The carburetor must maintain all stock dimensions, including mounting and stud location on intake manifold.

          3.)  The booster height must remain stock OEM from Holley.  Cutting, tumbling, and/or polishing  will not be permitted.

          4.)  Visible modifications will not be permitted.

          5.)  The maximum height of the carburetor when measured from the bottom of the carburetor and/or throttle plate to the machined horizontal surface of block will be 7”-inches in both the front and rear of the block.

          6.)  The following alterations will be permitted;

                   a.)  Holes drilled in the throttle plate for proper idle.

                   b.)  Drilling, tapping and plugging of unused vacuum ports.

                   b.)  Welding of throttle shaft to linkage arm.

                   d.)  Drilling of idle and/or high speed air correction jets.

                   e.)  Milling of center carburetor body metering block surface, maximum of .15” on each side.

                   f.)  Removal of choke plate and shaft.

                   g.)  The jets may be changed as needed.

          7.)  Gauge measurements (go/no-go) must be met at all times, regardless of carburetor temperature.

C.)  HP 80541-1 Option:

          1.)  The carburetor must remain stock retaining all Holley measurements and dimensions.  The carburetor may be adjusted utilizing only specified Holley replacement parts,

          2.)  Jets, bleeds, needle and seat, emulsion bleeds, power valves, accelerator pumps nozzles and accelerator pump cam adjustments will be permitted. 

          3.)  Physical alteration of carburetor components and/or parts and/or any alterations, machining and/or reshaping will not be permitted.  The use of epoxy and/or coatings of any kind will not be permitted.

D.)  A single unaltered carburetor spacer plate with an unaltered square hole/opening including gasket with a maximum thickness of 1-1/8“-inch will be permitted.  Tapering, machining and/or any other alterations to the spacer plate will not be permitted.

E.)  Only a single conventional round type air cleaner housing will be permitted.  Ram air, air box and/or heat shield type devices will not be permitted.  The air cleaner must remain in place when the hood is removed.

F.)  Air cleaners that provide ventilation through the top cover ( such as the K&N brand) will be permitted.

G.)  Air induction plastic carburetor insert and/or other devices that direct air into the air intake will not be permitted.

H.)  Air diffusers will not be permitted.

1.1.6     Ignition

A.)  Only stock OEM distributors will be permitted.  The distributor must maintain the factory mechanical advance curve to stock OEM specifications.  Alterations and/or adjustments will  not be permitted.

B.)  The ignition amplifier box (“rev box”) and coil must be mounted under the hood (out of the driver’s reach) for the ease of inspection.  The black wire must be grounded to the motor.  When the hood is removed the “rev box” must be clearly visible and not covered.

C.)  The car must be fitted with one (1) unaltered approved MSD/Dirt car RPM (rev) limiting box, part number 87286 with DIRT 6,200 RPM chip.  The box and the chip must remain operable and working condition, prior to, during and after all racing events.

D.)  The “rev box” RPM limiting chip (6,200 RPM) must face up and be securely fastened (taped in) in the “rev box”.

E.)  Trigger-type and/or crank trigger-type ignitions will not be permitted.

F.)  The ignition must be mechanically driven in the stock OEM location.

G.)  Only the stock OEM H.E.I. ignition will be permitted.

H.)  The wiring must remain as specified by the ignition amplifier box manufacturer.

I.)  One American Passenger Car sized battery with terminals on top and a maximum of 12 volts will be permitted.  The battery voltage must not measure more than 14.3 volts.  Step up transformer and/or any other device designed to increase voltage will not be permitted.

J.)  OEM stock firing order must be maintained for all engines.  Standard GM Firing Order 18436572.

K.)  Ignition amplifier boxes, “rev boxes”, RPM limiting chips, may be inspected, confiscated and/or rev chips at any time. 

L.)  Traction control device will not be permitted. Braking device that control traction will not be permitted.

M.)  Freedom Officials reserve the rights to analyze and/or switch ignition boxes and/or rev chips at anytime.

1.1.7 Lubrication/Oiling System/Oil Cooler

A.)  Only a single wet sump oil pump will be permitted. Dry sump oil systems will not be permitted.

B.)  Only magnetic steel oil pans will be permitted.

C.)  External type oil pumps and/or vacuum pumps will not be permitted.

D.)  Accu Sumps will not be permitted.

E.) Engine evacuation systems by internal and/or external drive pumps or by connection between exhaust system and/or valve covers, intake manifold and/or oil pan will not be permitted.

1.1.9- Transmission/Division and Driveline Components

A.)  Only approved North American and /or Canadian manufactured manual shift transmissions will be permitted.  Automatic and/or automatic-type transmissions will not be permitted.

B.)  Overdrive and/or under-drive transmissions will not be permitted.

C.)  Running through reduction gears will not be permitted.  The transmission must be direct drive  to the rear end.

D.)  The transmission must have working gears.  Forward, neutral and reverse must be working.  From neutral position and with the motor running, the car must be able to go forward and/or backward in a smooth manner.  The car must start and move under its own power.

E.)  The transmission must bolt to the bell housing.

F.)  Driveline components made of carbon fiber, titanium and/or other materials (considered exotic) will not be permitted.

G.)  A maximum of two (2) universal joints per driveline will be permitted.

1.1.10 -  Driveshaft

A.)  Only one (1) drive shaft connected from the transmission to the center section of the rear end will be permitted.  Only magnetic steel drive shafts will be permitted.  Titanium and/or aluminum drive shafts and/or drive shaft yokes and/or driveline components will be not be permitted.

B.)  Two (2) driveshaft hoops / rings a minimum Ό”-inch x 2”-inch wide magnetic steel must be positively fastened by two (2) 3/8”-inch grade 5 bolts to the frame and/or torque arm side plates installed around each universal joint.

C.)  The drive shaft must have some type of drive shaft cover/shield.  Cars with open drive shaft tunnel a minimum of 1/8”-inch thick magnetic steel extending from 2”-inches under the front edge of the seat to the back of the transmission covering the shaft and the universal joint(s) and output flange on top and both sides.  The tunnel must extend down to the floorboards.  The cover must be positively fastened with a minimum of four (4) 3/8”-inch diameter bolts at the bottom connected to a cross-member.  The cover must be a covered unit with no cuts and/or holes and/or removed material for the purpose of weight reduction.  The only hole may be for the gear shift control.

D.)  Closed drive type cars, torque tubes and/or bells that already have a 360 degree cover from the universal joint back to the seat will be permitted.

E.)  Carbon fiber, titanium, and/or other materials (considered exotic) will not be permitted.

1.1.11 - Engine Cooling System/Radiator

A.)  Only cast iron water pumps will be permitted.

B.)  Only one (1) radiator will be permitted.  The minimum width of the radiator will 20”-inches when measured from the outside edge(s) of the radiator.  The radiator must be mounted vertically in front of the engine.  The minimum height of the radiator must be 22”-inches when measured from the bottom of the frame rail vertically and may incorporate the oil cooler to achieve the vertical height.  Radiators mounted on an angle will not be permitted.

C.)  Plastic and/or carbon fiber radiators will not be permitted.

D.)  Auxiliary cooling tanks and/or overflow cans and/or canisters will not be permitted in the cockpit.

E.)  The cooling fan for the radiator must be mounted in the stock OEM location on the front of the water pump.  Fans mounted to the crankshaft will not be permitted.  Electric cooling fans and/or pumps will not be permitted.


1.1.12 - Rear End

A.)  Only competition type rear ends will be permitted.

B.)  Hypoid-type and/or Nine (9”) Ford-type and/or limited slip-type and/or lockers and/or two speed rear ends will not be permitted.

C.)  Only solid aluminum and/or magnetic steel spools will be permitted.

D.)  Only steel and/or aluminum rear spindles will be permitted.  If the rear spindle is machined from aluminum it must be a one-piece tube and spindle with a minimum outside diameter 2-7/8” and a maximum 2-½” inside diameter.

E.)  Live rear ends with aluminum and/or steel axles will be permitted.

F.)  Carbon fiber, titanium and/or other materials (considered exotic) for any rear end component will not be permitted.

G.)  A maximum rear end offset of 4”-inches from the center of the inside tire width when measured from the inside of the left rear tire to the inside of the right rear tire at axle height. 

1.1.12 Rear End

A.)  All rear end components, rings and pinion, gear sets and/or any other component, must be specific for the rear end in the car in size.   Only full-size type rear ends will be permitted.  A minimum of 8”-inch diameter ring gear will be permitted.  Miniature rear end housings will not be permitted.

B.)  Titanium axles and/or any other titanium rear end component will not be permitted.

1.2  Fuel, Fuel Cells and Fuel System

A.)  All cars must have fuel cells that meet and/or exceed SFI 28.1/.2 and/or FT3 specifications and must not be older that five (5) years from the date of manufacture.  The fuel cell must have a maximum capacity of 24.5 US gallons and must remain in a rectangle and/or square shape for measuring and calculating capacity.  The fuel cell must be mounted securely in its container and centered between the frame rails.  Pressure tanks on fuel systems will not be permitted.  Auxiliary fuel tanks will not be permitted.


B.)  The maximum capacity of the fuel when measured empty and/or dry will be measured in cubic inches utilizing the standard formula of length

(minus ½”-inch) x depth (minus ½”-inch) will be 5,660 cubic inches.


C.)  The foam in the fuel cell must remain unaltered.  A minimal cut in the foam will be permitted in the shape of a square or a rectangle.  The cut may be no more that 1,000 square inches.  The foam must retain the factory cut.


D.)  The fuel cell must be enclosed completely in a rectangle and/or square container that is a minimum thickness of 20-gauge magnetic steel.  An aluminum container may be used as an option and must be a minimum thickness.  On the bottom of the fuel cell, a piece of .090-gauge material (aluminum and/or magnetic steel - in addition to the existing container) must be used at the bottom  of the fuel cell container to prevent bowing and/or deflection.  The .090-guage material must have an inspection hole drilled near the center of the piece to measure the thickness of the material.  A 1”-inch x 1”-inch x .0625”-inch thick magnetic steel square tubing rack must be fabricated on the top, front and rear sides of the fuel cell container.  The square tubing must be a minimum of 5”-inches from the outside edge of the fuel cell on either side.  The rack may be fastened to the bottom of the fuel cell can utilizing a piece of magnetic steel angle material that is a minimum of

1”-inch x 1”-inch with a minimum material thickness of .065”-inch magnetic angle steel that is on all four (4) sides of the container.  Drilling multiple holes and/or any attempt to lighten any piece with the fuel cell container and/or rack will not be permitted.  The measurements taken in regard to the fuel cell container will be measured on an inside-to-inside basis.  A tolerance for material thickness will be calculated and permitted for dimensions, however there will be no tolerance for expansion and/or containers that are larger than the minimum.


E.)  Fuel coolers of any type will not be permitted.


F.)  Pump or race fuel permitted.


G.)  Only one mechanical fuel pump in the stock location will be permitted.  Fuel must be delivered through the fuel system from the fuel cell to the mechanical fuel pump.  Fuel systems that require a return line, a pressure regulator of any type and/or other volume and/or pressure altering device will not be permitted.


1.3   Exhaust-Muffler and Sound Devices


A.) Each car must have one (1) unaltered muffler per exhaust.


B.) The exhaust must exit past the driver and exhaust must flow toward the rear of the car in an upward manner away from the racing surface. Exhaust systems that face the outside of the car will not be permitted.


C.) Each muffler must have a tail pipe that is a minimum of 10”- inches long when measured off the rear edge of the muffler.

D.) Cross-over and/or the joining of exhaust systems from side-to-side will not be permitted.


E.) Only Schoenfeld headers, model number: 1122b,112bcm, 4122b and 3122b will be permitted. The exhaust headers must not exceed 1- 5/8” outside diameter. Tri-Y, step headers, stainless steel, coated, ceramic and/or otherwise, and/or merger collectors will not be permitted.


F.) The permitted mufflers include: Dynomax part number:17223 and 17296: Extreme Muffler part numbers: 31530 and 31230: Beyea part number: MUF3DM.


G.) Header collector extension pipe and tail pipe must be inserted past the muffler inlet or outlet flange and must exit behind the driver.


1.4   Traction Control Devices


A.) All electronic and/or computerized wheel spin and/or ignition retardation 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 acquisitions systems will not be permitted.


1.5 Chassis/Frame


A.) All frames must be fabricated utilizing 2”x4” rectangular magnetic steel tubing with a .120” wall thickness. Only 2”X4” Rectangular box frames between the front and rear axel centers will be permitted. The 4”- side of the rectangular tubing must remain in the vertical position. For the purpose of inspection one 3/16 dia hole may be drilled in each frame rail. Other holes will not be permitted. Round tubing must be either 1- 1 / 2 outside diameter and/or 1-3 /4 outside diameter with wall thickness of .095”- inches.


B.) Frame width will be as follows: At the front shock towers a minimum 24” and a maximum of 35”- inches. Rear of the car minimum of 26” with a maximum of 35” -inches. The minimum frame width at the rear roll bar must be 26”- inches. All measurements will be taken from the outside of the frame rail, at the top and bottom of the frame rails at its longest length. Clips, sub-frames, ect, will be considered a part of the frame.


C.) The minimum length of the 2”x4” frame rails begins 14”- inches in front of the centerline of the rear axel and extends to the front of the radiator. The left and right rails (both top and bottom) must be equal in distance from the driveline centerline along the total length of the frame. Offset frame rails will not be permitted. A maximum 4”- inches indent in the lower left rear frame rail for suspension clearance will be permitted. The (2) upper frame rails in the engines compartment may be altered for engine clearance only.


D.) The kick-ups must meet the same specifications as the roll cage and/or frame material.


E.) Titanium and/or carbon fiber materials will not be permitted on the chassis and/or frame.


F.) There must be a minimum of  2-½” inches ground clearance from the chassis at its lowest point.


G.) Metal, lexan, rubber air dams, fins, spoilers, skirts and/or air directional devices underneath the car will not be permitted.


H.) Ground effects will not be permitted.


1.5.1 - Seat Location and Mounting in Frame


A.) The seat and steering wheel must be centered in the frame. Offset mounting of the seat and/or steering wheel will not be permitted.


B.) The bottom rear of the seat most be a maximum of 16”- inches from the centerline of the rear axel.

1.6  Weight / Ballast


A.) All will be weighed with the driver seated in the car. The minimum weight permitted before and/or after an on track event will be measured by the track scales. The track scales will be the official scales. All cars found to be light prior to the event, time permitting will be allowed to make the necessary adjustments and represent themselves at the scales. The number of cars will be weighed after a event will be announced at the driver’s meeting and/or on the one-way radio. If a car is signaled to go to the scales in any fashion and does not report to the scales at a appropriate time, That car will be disqualified from the event. Any car that is found to be light following time trials and/or a qualifying event will be disqualified from that particular race and make the necessary adjustments and represent themselves for that car’s assigned consolation event. If the car is found light after the feature event, that car will be disqualified from the event.


B.) Freedom speedway Sportsman Modified must maintain utilizing the GM Engines must maintain a minimum weight of 2400 lbs following the completion of any event.


C.) All weight and/or ballast must be positively fastened and mounted within the vertical planes formed by the frame rails and must remain stationary during competition.


D.) All weights must be painted white and clearly labeled with the car number on it.


E.) Ballast and/or weight may not be mounted to the roll cage above the rear deck.


1.7 Body




1.7.1 General Body

A.) Mirrors and/or reflective devices will not be permitted.


B.) The maximum rear spoiler height, regardless of ride height, may not exceed 50”- inches. The rear spoiler must be able to provide the driver following a view of the track ahead.


C.) A full magnetic windscreen and/or rock guard is required.


D.) The minimum size opening for the side windows will be 12”- inches in width by 30”- inches in depth. A rectangular box, matching these dimensions may be passed through the car  from one side window to the other.


1.7.2 Body Material


A.) Only magnetic and or aluminum will be permitted for all inner and outer body panels.


B.) Only a single piece fiberglass roof will be permitted.  Roof must be centered on the roll cage must meet RUSH rules.


C.) Only clear lexan will be permitted for the rear spoiler and rear wing windows. Decals and/or lettering will not be permitted on the lexan.


1.7.4 Front Door Posts


A.) Must have 1 on each side must meet RUSH rules.


1.7.5 Rear Wing Windows


A.) All rear wing panels and windows must resemble a current production OEM style body. Must meet RUSH rules.


1.7.6  Body Width


A.) The body width, when measured at any point along the body line from front-to-back will be a maximum of 68”-inches and a minimum of 64”-inches. And must meet RUSH rules.


1.7.7 Door Panels


A.) The side door panels will be a maximum of 85”inches and a minimum of 60” in front of the centerline of the rear axel.


B.) The front door extensions will be a maximum of 20” behind the front axel centerline.


C.) The top front corner of the door when measured from the ground will be a maximum of 38” and a minimum of 30” when measured 60” from the rear axel centerline. The rear of the door when measured from the ground will be a maximum of 42” to the top of the door when measured 16” from the center of the rear axel centerline of the rear forward.


D.) The ground clearance on the bottom of the door must maintain a maximum of 12” and a minimum of 6” from the ground. And must meet RUSH rules.


1.7.8  Rear Quarter Panels


A.)  The rear quarter panels must be a maximum of 47”- inches and minimum of 40”-inches from the ground at the rear and continue in a straight line with the top of the door.


B.)  The rear quarter panels may extend rearward a maximum of 48”-inches at the top and maximum of 44”-inches at the bottom when measured from the center of the rear axle to the rear of the car.  And must meet Rush Rules.


1.7.9   Rear Spoiler


A.)  A one piece, clear lexan spoiler with a maximum height of 5”-inches from the rear deck will be permitted.


B.)  The rear spoiler must be non-adjustable.


C.)  The maximum overall height of the spoiler when measured from the ground must not exceed 50”-inches.


D.)  A maximum four (4) of vertical supports (a maximum of 2”-inches in vertical height and 10”-inches in length) for the purpose of fastening the spoiler to the rear deck will be permitted.  And must meet Rush Rules.




1.7.10   Rear Deck


A.)  The maximum height the rear deck when measured from the ground will be 47”-inches and a minimum of 40”-inches.


B.)  The rear deck lid must be fully enclosed from the side-to-side and have a maximum height of 14”-inches and a minimum 9”-inches vertically behind the fuel tank.  And must meet Rush rules.



1.7.11  Hood, Nose and Front Spoiler


A.)  The maximum width for the hood, nose and front spoiler will be 36”-inches with a minimum width of 24”-inches.  Louvers will be permitted on the sides of the hood.


B.)  The nose-piece must not extend rearward of the front shock towers.


C.)  The front spoiler must be a separate piece.


D.)  Shock absorber covers and/or deflectors must not be a part of the nose or the spoiler and/or positively fastened to the nose in any fashion exceeding the 36”-inch maximum width.


E.)  Fabric material shock absorber covers will be permitted.  The covers must not be used to achieve any aerodynamic advantage and/or to deflect air in a positive manner.


F.)  The maximum the spoiler may extend in front of the front axle centerline will be 20”-inches.


G.)  The front spoiler must be non-adjustable (hinges and/or sliders will not be permitted).


H.)  The hood and the nose may have a maximum lip and/or flange of 2”-inches on both sides following the contour of the body.   They must remain symmetrical.


I.)  The hood and nose be centered on the centerline of the frame.

J.)  The hood must extend over the radiator and have complete sides.


K.)  The front spoiler may have a lip and/or flange a maximum 2”-inches on both sides following the contour of the spoiler not exceeding the maximum width of 36”inches.  The front spoiler may be offset 1”-inch from the centerline of the frame to the right or the left.  And must meet Rush rules.


1.7.12   Hood Scoop


A.)  The hood must be fully enclosed.  And must meet Rush rules.



1.7.13  Interior Sheet Metal


A.)  All horizontal body support(s) other than the inner pods, whether in the front and/or rear must be a minimum of 1”x1” .095”-inch thick tubing or 1”-inch flat stock a minimum of .125”-inch thick.


B.)  Front and rear firewalls are required.  The front firewall must insolate the cockpit from the engine compartment. The rear firewall must extend from the top of the fuel cell to the belly pan to isolate the cockpit from the fuel cell.  The firewall must be a minimum of .050”-inch thick aluminum and/or magnetic steel.  The firewall may be altered and/or cut for drive shaft clearance.


C.)  Covered roll bars will not be permitted.  Sheet metal that is one-piece and/or part of a body panel formed around tubing that is not considered an aerodynamic advantage will be permitted, provided there is no excess sheet metal.


D.)  Louvers will be permitted for cooling purposes only, including the radiator, engine and/or a working oil cooler.  Louvers and/or holes in the interior or exterior sheet metal will not be permitted.  And must meet Rush rules. 


E.)  Only aluminum belly pans will be permitted. Panels under the rear and  and/or the fuel tank will not be permitted.



1.7.14  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.)  All cars must be equipped with a quick-release type steering wheel.


C.)  The driver compartment must have a starting switch and/or button within reach of the driver.


D.)  A clearly labeled electrical on/off ‘kill’ switch must be within reach of the driver.


E.)  Mirrors of any type will not be permitted.


F.)  Radios and/or electronic and/or data communication devices will not be permitted.


G.)  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-inches and must be securely fastened.


H.)  Fuel and/or power steering lines and/or fittings running through the driver’s compartment must be made from an approved braided type of line.  High pressure lines and/or fittings and/or hot fluid lines running through the driver’s compartment must be encased and/or must have a shield.


I.)  Rear pan hard bar adjustment devices will not be permitted in the driver compartment.  Any rear pan hard  adjustments that have a knob and/or an adjustment device outside of the cockpit must be wired in a fixed position for competition.  Adjustable pan hard devices of any type will not be permitted during competition.






1.7.15  Numbers and Identification


A.)  The track and/or series Scoring Director reserves the right to issue and/or change a car number to prevent duplication and/or maintain proper records.


B.)  Team cars must be clearly identifiable from one another and use another number and/or letter.


C.)  Number and/or letter combinations are required on the roof, nose and both doors.


D.)  All numbers and letters must be a minimum of 18”-inches high on the roof and/or doors and 8”-inches high for the nose.


E.)  The nerf bars must not block the visibility of the number and/or letter combinations.



1.7.16  Bumpers and Side Bars/ Nerf Bars



A.)  All bumpers, side bars/nerf bars and/or bracing must be made from a minimum 1-½” diameter round .095”-inch thick magnetic steel tubing only unless otherwise specified.


B.)  All edges and/or corners on bumpers and side bars/nerf bars must be rounded.  Sharp edges will not be permitted.


C.)  The rear bumper and/or any side bars must not extend past the outside of the tire sidewalls on either the left and/or right side of the car.


Front Bumper

A.)  Only the front bumpers may be made from a minimum 1-Ό”diameter round .095”-inch thick magnetic steel tubing.


B.)  These rails must be a minimum of 6”-inches and a maximum of 12”-inches apart when measured from the top to the bottom and maintain that measurement for a minimum width of 24”-inches and a maximum width of 30”-inches.  The front bumper must also have an 18”inch center when measured from the ground up to the middle of the bumper.


C.)  The maximum the front bumper may extend from the centerline of the front axle 24”-inches and a minimum of 20”-inches.


D.)  The front surface of the bumper must remain flat, parallel and perpendicular with the front of the nose piece for the full width of the bumper.    V-shaped and/or any other type of shaped bumpers will not be permitted.


Rear Bumper


A.) The rear bumper must consist of (2) rails, a upper and lower, which must  have (4) sockets and horizontal support bars positively attaching it to the frame.


B.) The rear bumper must have an 18”- inch center when measured from the ground to the middle of the bumper.


C.) The maximum the rear bumper may extend back when measured from the centerline of the rear axel is 52”-inches.


D.) The rear surface of the bumper must remain flat and parallel with the back of the rear quarter panel for the full width of the bumper. V-shaped and/or any other type of shaped bumper will not be permitted.


Rub Rails


A.) Solid and/or bars with ballast added will not be permitted.


B.) The rub rails must be exposed and outside the body panels. The left side rub rail may extend a maximum of 2” outside the left rear tire sidewall.


C.) The rub rail must be bent with a gentle radius at a 90 degree angle and must protrude a minimum of 6” back in past the body.


D.) The rub rails must be a minimum of 50”- long from socket - to - socket.


Bumpers and Rub Rails


A.) All bumpers and rub rail sockets must have fasteners, pins and/or bolts with a minimum dia of 5/16”.


1.8  Suspension


1.8.1  Front End


A.) The front axel must be straight, one- piece axel manufactured from magnetic steel tubing.


B.) Split axels and/or dropped axels and/or independent front suspensions will not be permitted.


C.) All brackets on the front axel welded and/or bolted. Bird cages and/or sliders will not be permitted.


 D.) Only Modified front spindles will be permitted.


E.) Bearing shafts that are made of steel are recommended.


F.) The front wheels and tires must remain fully exposed, fenders and/or deflection devices of any type will not be permitted.



1.8.2  Shock Absorbers


A.) No large body shocks and/or remote reservoir stile shocks. No external adjustments other than gas through Schrader valves.


B.) Only 1 shock per wheel will be permitted.


1.8.3 Suspension Components


A.) Independent front and/or rear suspensions will not be permitted.


B.) A Frames and/or ball joints will not be permitted for steering axis (kingpin only).


C.) Four wheel steering, actuated by the steering wheel and/or of any type will not be permitted.


D.) All suspension systems and designs must be mechanical. Hydraulic, pneumatic (air), electronic, radio and/or computer assisted for adjustment and/or in-or-out of cockpit type suspension adjustment systems will not be permitted.


1.8.4 Springs


A.) Any type and/or form of spring will be permitted ( torsion bar, coil and/or leaf spring).


B.) Carbon fiber and/or titanium will not be permitted.


1.8.5  Brakes 


A.) All cars must have (4) wheel hydraulic brakes in good working condition. Random brake inspection may take place throughout the season.


B.) Carbon fiber, carbon, titanium, ceramic, aluminum pads will not be permitted.


C.) On live rear axels, one inboard and one outboard brake assembly will be permitted.


D.) Brake bias may be adjustable through the cockpit.


E.) Manual brake shut offs will not be permitted, with the exception of the right front brake.


1.8.6  Wheelbase and Tread Width


A.) The minimum wheel base is 106” and a maximum of 110” with a maximum tolerance ½”,when measured from the centerline of the rear axel to the centerline of the front axel for both left and right sides.


B.) The maximum front tread width will be 86” with a minimum of 74”. The maximum rear tread width will be 86” with a minimum of 74”. These measurements will be taken from the outside edges of the side wall of the tires on each side.


1.9  Roll Cage


A.) Only round magnetic steel tubing 1 1 /2” and/or 1 3 /4” in outside diameter with a material thickness of 1-Ύ”-.095” and/or 1-½”-.120” will be permitted. Must meet Rush rules.


1.10 Wheels 


A.) Steel or Aluminum will be permitted.


B.) The maximum rim width will be 14” when measured from the inside of left bead to the inside of the right bead of the wheel, however, it is highly recommended to use 12” wide on the rear and 10” on the front. Only wheels 15” in diameter will be permitted. Beadlocks may only be used on the outside of the wheel.


C.) A minimum of (5) lug nuts on the wheels will be permitted.


1.11 Tires 


A.) Hoosier and American Racer will be allowed. (27.5x11) and (29x11) Nothing any bigger allowed.


B.) Heating of the tires by torch, blanket, heating devices, exhaust systems and/or any other method will not be permitted.


C.) Inner liners of any type will not be permitted.


1.12  Personal Safety Equipment 

3.1 General

A.) Each competitor is solely responsible of for the effectiveness and proper installation, per the manufacturers specifications, of personal safety equipment and determining it to be adequate for competition at every event. each competitor is expected to investigate and educate themselves for continuing improvements regarding their own personal safety equipment.


Seat Belts/Restraint System


A.) Each car will be equipped with a minimum (5) point SFI 16.5 or 16.1 approved restraint system, until the date of the belt expiration (two years from the date of manufacturer). Seat belt restraint systems shall be installed and used in accordance with manufacturers instruction. ( 2”- inches) wide belts that meet the SFI 16.5 and/or SFI 16.1 specifications will be permitted.


Protective Clothing

A.) All drivers will be required to wear a fire resistant driving uniform meeting minimum of the 3.2A/5 specification and display a Valid SFI 3.2A/5 Label.


B.) All drivers should wear fire resistant accessories including but not limited to ; head sock , under garments, shoes, and socks. All drivers will de required to wear fire resistant gloves. Shoes and gloves will required to meet minimum of the SFI 3.3 specifications and display a valid SFI 3.3 label.



A.) Aluminum and/or carbon fiber-type composite seats only will be permitted. If a carbon fiber type composite seat is used it must meet the SFI 39.2 rating. Aluminum seats with an FIA and/or SFI39.2 rating are recommended. All seats must be mounted to the frame as required by the seat and chassis manufacturer. Full containment seats and/or aftermarket bolt on head restraints are recommended.


B.) All areas surrounding the head should have padding.


C.) Aright side head restraint net and/or support is recommended. All head restraint nets should be equipped with quick release mechanisms.


D.) The drivers seat must be securely fastened to the frame and/or cage in six positions with a minimum of (6) 3/ 8” bolts. There should be a minimum of (4) bolts on the bottom and (2) in the back of the seat. All seats must be a minimum of 1/ 8” magnetic steel plate under and up the back 4” and be as wide as the seat. Only single piece high back seats will be permitted.



A.) All drivers will be required to wear a full-face helmet with a Snell safety rating of SA 2010 and/or 2005 and/or a valid SFI 31.1, SFI 31.2 and/or SFI 31.1 2000 label.


B.) Arm restraints are recommended and must be connected and used as instructed by the manufacturer.


Other General Safety Items

A.) Sharp and/or protruding edges in the cockpit will not be permitted.


B.) Windshield screens should be a minimum thickness of 0.090 and should be securely to the roll cage.


C.) A clearly marked electrical engine shut off switch within the reach of the driver.


D.) A clearly marked fuel shut off valve, labeled ON AND OFF, must be in reach of the driver. It must be labeled wit the words Fuel Shut Off.


E.) SFI- approved and labeled seat, roll bar, knee and steering pads and/or padding is recommended.


F.) All cars must have a driveline U-Joint scatter shields.


G.) It is highly recommended all teams must have a fire extinguisher in the rear of their transporter with the car number clearly visible on the extinguisher. It is highly recommended the extinguisher be a minimum of 20lb and is recommended to FFF type chemical and/or Dupont FE-36 and/or equivalent.


1.13 Other

A.) All fuel lines, power steering lines and/or fittings running through the drivers compartment must be made from an approved braided type line. Plastic and/or glass fuel filters will not be permitted.


B.) All cars may be subject to technical inspection at any time.


C.) All drivers are required to have a one-way radio. The one-way radio must be working and active prior to any on-track activity, two-way radios, crew-member and/or any other means of electronic communication, other than the one-way radio will not be permitted.

***While the above rules offer a good outline, not everything can be covered by a written rule. If a car has a part that no one else has, and its not mentioned in rules, its NOT assumed legal. ASK FIRST. If you want to run anything not covered ask Troy Shuknecht at 585-409-1366 or 585-409-4061 first before doing so. If you don’t ask and anything is found it will automatically be ruled illegal. Any item found illegal will be confiscated!