If you have a minor that will go into the pits and need a minors release form, please download the form from the racetracks race site and have it completed before arriving at the track for that evenings events. STEM can not intervene with minors release forms. This is a compliance issue between the track and their insurance company.
Southern Topless Economy Modified (STEM) will not tolerate any misbehavior by drivers or their crews on or off the race-track. Punishment will be at the discretion of the series director and staff and not limited to suspension or termination from the series. Any disagreements including line-ups during a race, will be discussed after the nights racing activities. Discipline final decisions will not be made the night of the infraction. Penalties will be handed out within two days of the infraction on a case by case basis, by the series officials. Any driver who has been barred from racing at another racetrack, for behavior reason, is not eligible to compete in the STEM class during his punishment. Drivers who have a consistent behavior problem may not be eligible to compete in the STEM class. The administrative staff of STEM reserves the right to deny a STEM license to anyone who does not fit the STEM behavior model.
Drivers under the age of 18: There is no age rule on drivers under the age of 18. Any driver is eligible to compete in the STEM class, but must prove the ability to safely perform on the track. Each driver will be admitted to the class on an individual basis, either by previous history of racing, or by an on track demonstration of performance at the STEM administration request. Our goal is safety and enjoyment for young drivers. Young drivers who are not ready to race in the STEM class may be asked to be mentored by a seasoned STEM driver for instruction. Also, all school age drivers will be required to show their grades to STEM administrator for verification.
If you cause one single-car caution in the heat race or three cautions in the feature race, you will be sent to the pits and not be able to compete in the rest of that event. If you are spinning out that badly, you need to go work on the car in the pits, not cause havoc on the track. Points will be awarded by the position finished. On single file restarts where a cone is placed on the front stretch all cars MUST go to the right of the cone, single file, without passing the car in front of you until crossing the start/finish line. Failure to do so is a black flag for that race.
All drivers/crews will conform to local tracks behavioral rules.
Calling the track owner/promoter with an issue on any STEM decision, is not acceptable. All decisions concerning violations and punishments will be handled by the STEM staff.
Any malicious posts by drivers, crew or family on social media concerning STEM, STEM drivers, or STEM sanctioned tracks may result in immediate suspension of STEM license. Keep it positive on forums, Facebook, Twitter, etc., we are not going to put up with any negativity.
Car must be in the pits when signing in for that nights race.
Rain-out Rule: Whatever tracks rain-out rule procedure is, will be followed at that track.
FIRST NIGHT: All drivers draw for heats. Qualifiers redraw for starting positions. One heat - 5 redraw; two or five heats - 10 redraw; three, four or six heats - 12 redraw.
FROM SECOND NIGHT ON: As per track procedure.
“B” mains are lined up straight up from heats with highest finishers to front.
Track will determine "A" feature car count.
Changing cars during the night is allowed as long as it is allowed by that track. If it is not allowed, you can not change cars between heats and feature. If car change is allowed, you must report car change to track official and run your car number.
Points accrue in drivers name. If you change cars from heat to feature, you must change the car number to your assigned number and it must be reported to track official no less than 10 minutes after the "B" Feature is run. If you change cars you will start on the back of the feature race.
Overall Championship begins March 1, 2014 and ends November, 2014 (weather permitting).
Top 15 feature races will be counted towards overall championship. If you have raced more than 15 feature races, only top 15 finishes will be calculated towards STEM Championship.
MODIFIED FRAME: 1964 or newer OEM perimeter American rear-wheel drive passenger car frame only. No sports car frames. Frame must be full and complete, cannot be widened or narrowed, and must be able to support roll cage on both sides, exceptions are: weight jack in original center line of spring tower allowed; frame may be cut a maximum 36 inches forward from center of rear end housing; horns may be removed in front of steering box front cross member may be notched and boxed for radiator and/or steering clearance. Maximum two inch wide by four inch tall frame stiffener may be welded directly to outside of left side frame rail. Minimum wheelbase 108 inches. For cars using OEM rear suspension design, rear of frame behind rear tires no further forward than one inch behind factory seam, may be replaced with two inch by three inch steel tubing with 0.095 inch wall thickness.
ROLL CAGE: Must consist of continuous hoops, minimum 1.66 inch O.D. tubing, with minimum wall thickness of 0.095 inch for main cage, frame-mounted in at least six places. Sport mod can be 1.50 O.D. minimum .095 wall thickness. Must consist of a configuration of front, rear and top hoops connected by tubing on sides or side hoops. Driver’s head must not protrude outside cage with helmet on. Roll cage must be securely supported and braced with minimum one cross bar in top halo. Foot protection bar required. Main cage no further forward than rear of engine. All bars forward of cage must be lower than hood. All driver side door bars and uprights must be minimum 1.5 inch O.D. Minimum three driver side door bars, parallel to ground and perpendicular to driver, and welded to front and rear of roll cage. Passenger side must have at least one cross door bar, horizontal or angled, minimum 1.25 inch O.D. with 0.083 inch wall thickness, and one top door bar, minimum 1.5 inch O.D. with 0.083 inch wall thickness. Steel doorplate, 18 gauge or 0.049 inch minimum thickness, must be securely welded to outside of driver side door bars.
FRONT SUSPENSION: All components must be steel, unaltered OEM, in OEM location, and replaceable by OEM parts, exceptions are: tube-type upper A-frames with or without aluminum or steel cross shaft, and mounts can be moved; OEM replacement stamped steel lower A-frames; rubber, nylon or steel lower A-frame bushings, no offset or bearing type; welded or bolted shock mount on lower A-frame; OEM or OEM replacement ball joints allowed. Lower A-frames must be right and left, and of same design. Lower A-frame mounts and bolt holes on frame must be in OEM location. OEM ball joints only. May use sway bar must be unaltered OEM. Sport Mod frame cars may run tubular upper A-Frames.
STEERING: No rack and pinion. All components must be steel, unaltered OEM, in OEM location, exceptions are: outer tie rod end and adjustment sleeve may be replaced by a minimum 0.625 inch steel rod end and steel tube; spindles can be ground for brake caliper clearance only; bolt on spindle savers allowed; steel steering shafts and knuckles only. Spindles must be right and left, and of same design. OEM Idler arm, pitman arm, and center link must match frame.
SHOCKS: One steel, nonadjustable, unaltered shock per wheel only. No shocks allowed on screw jacks. No external or internal bumpers or stops. No coil over, air , or remote reservoir shocks. No Schrader valves or bladder type valve allowed.
REAR SUSPENSION: One steel coil or multi-leaf (rear) spring per wheel only. Minimum 4.5 inches O.D., non-progressive coils only. No torsion bars, air bags or inner liners. All components must be steel. All mounts and brackets must be welded or bolted solid. Coil springs must remain vertical and over center line of rear-end housing. No coil-over eliminators allowed. No chains, cables or tethers. Rear shocks cannot be mounted on control arms. Must utilize one of the following designs:(A) After-market three link design requirements: No biscuits used on suspension anyplace on the car. Must use 13 inch minimum lower control arms. Must use one upper control arm, solid tube only. All mounts must be solid, no cantilevers, on upper link. Must use minimum 23 inch pan-hard bar located behind rear-end housing. Solid J-Bar is legal rather than pan-hard bar. Lower spring perch must be mounted on center of axle tube. Must use steel upper weight jack. No bearing rear spring perches/cups allowed. (B) Multi-leaf spring requirements: Must use steel multi-leaf springs with no additional suspension components besides one shock per wheel. Adjustable aluminum lowering blocks allowed. (C) OEM stock design requirements: Rear cross member, control arm mounts and bolt holes on frame must be in stock location. Springs must remain in stock location. Lower spring perch must be welded to rear-end housing. Must use steel upper weight jack. On Sportmod frames, trailing arms must remain stock length and will be measured bolt-hole to bolt-hole. Upper trailing arm measures 11 3/16" center-to-center. Lower trailing arm measures 19 1/4" center-to-center. No slotted holes in trailing arms. May weld a washer over hole in trailing arm but must be at stock length. Bottom of axle tube to center hole of trailing arm mount is approximately 2 3/8". This is the stock length and will be checked, even if you have after market trailing arm mounts. No extra trailing arm holes in mounts. Must be stock measurements.
REAR END: Any steel approved OEM passenger car or truck non-cambered rear end (housing and carrier) allowed. All components must be steel, except axle cap, and drive flange. Safety hubs (floater) allowed. No quick change devices. Ring gear, center section and yoke cannot be lightened. One piece drive flanges only. Floaters O.K. No Detroit lockers or other types of traction control.
BUMPERS: Steel bumpers must be on front and rear and welded or mounted with minimum .375 inch bolts. Rear bumper must be no wider than five inches outside of rear frame rails. If wider than five inches outside rear frame rails, must be capped and bent forward 90 degrees, or constructed in a loop design. Must have at least one upright from bumper to fuel cell guard. Two-bar front bumper must no wider than width of material outside frame horns and with bottom loop parallel to ground. Top bar must be directly above bottom bar, minimum 6.5 inches apart, measured center to center.
TIRES/WHEELS: Must use unaltered Hoosier 2045 or F40 or above. Durometer 67 cold. No chemical softening, conditioning, or grooving of tire. No nail-head grinding. Tires may be ground within confines of tread (not past factory straight line). No re-caps. F45 or higher Hoosier tire will be required on left-side rear and F56 or higher Hoosier will be required on right-side rear sometime during the middle of the season. STEM will announce mandatory date. All wheels must be 10” wide or less, steel. Mud covers/mud plugs are legal on all four wheels but must be securely fashioned. No bleeder valves. bead lock, on right rear only. External, steel bead lock only and it cannot make wheel any narrower than 8 inches and no wider than 8.75 inches. Must use only steel bolts. Inner mud cover on left rear only. Must use minimum one inch O.D. Steel lug nuts. Right front bead lock allowed with certain track conditions. Drivers will be notified in drivers meeting.
BRAKES: Must be steel approved OEM, operative three wheel, drum or disc. Must maintain minimum OEM dimensions for hubs/rotors and calipers, cannot be lightened. Bolt pattern may be changed. Larger studs allowed. Rear rotors may be aftermarket 0.81 inch thickness (new). Vented rotors only, no scalloped or ceramic coated rotors. One proportioning device allowed front to rear only. Brake lines must be visible and must connect directly from master cylinder to calipers welded or bolted solid to rear-end housing.
EXHAUST: Round tube headers only. Turn down allowed. All exhaust must go through mufflers, two per car, one per header. No exhaust sensors. Stock manifolds OK. Ninty-eight (98) db minimum sound level. Tracks requiring mufflers must use approved mufflers for that track.
FUEL SYSTEM: Racing fuel cell required, maximum 32 gallon capacity must be in minimum 20 gauge steel container. Cell must be securely mounted behind rear axle .Must mount with minimum two solid steel straps around entire cell, two inches wide and 0.125 inch thick. All cell mounts must be steel, securely welded to frame/cage. Protective tubing must cover rear and extend past both sides of cell. No part of cell shall be lower than protective tubing. Fuel cell vents, including cap vent, must have check valves. 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. Pick-up must be on top or right side of cell. Limit of one fuel filter. One (1) carburetor allowed per car. May run gasoline or methanol , two (2) or four (4) barrel allowed. No fuel injection allowed. No fuel additives allowed except Top Oil.
BATTERY/STARTER: One 12 volt battery only, must be securely mounted between frame rails, Starter must bolt on block in OEM location.
GAUGES/ELECTRONICS: 12 volt ignition system only. Ford/Chrysler may use HEI distributor. Ignition rotor, cap, coil and module must remain OEM appearing. All wiring must be visible for inspection. No electronic traction control. MSD allowed.
TRANSMISSION: Automatic or Manual. Minimum two inch diameter, white, steel drive shaft. Steel slip yokes only. 360-degree drive shaft loop required and must be constructed of at least 0.25 inch by two inch steel, or one inch tubing, mounted six inches back from front U-joint. With engine running and car in still position, driver must be able to engage car in gear and move forward, then backward. No ‘in and out’ boxes or quick change devices allowed.
ENGINE COMPARTMENT: Rear of engine (bell housing flange) must be mounted at least 72 inches forward from centerline of rear axle. Stock rear suspension mounts may be at 70” Engine offset must be kept within two inches of centerline of front cross member with engine level. Copper/brass or aluminum radiator only and must be mounted in front of engine. ‘Wet’ sump oiling system only. Engine claim will be in affect at the start of the 2011 racing season. More to come on this issue.
SAFETY: All cars must have a window net. All drivers must were arm restraints or must utilize a piece of aluminum or steel no wider or longer than top of halo (1" Wicker Bill maximum on top). All cars must have a cross bar across the top halo.
BODY: Must be topless. Hood must be enclosed at rear. Engine covers allowed. No bars outside of tires. May have a rear spoiler , maximum of 8 inches maximum 67 inches wide. Left spoiler side maximum 34 inches long by 12 inches tall, right side maximum 20 inches long by 12 inches tall. Top of drivers door to bottom of halo no narrower than 12 inches. No front fenders.
WEIGHT: At tracks with scales only. Minimum weight 2350 lbs. unless using Brinn type transmission, mini-clutch, or direct coupler then must weight 2400 lbs.. Weights must not be mounted in drivers compartment or outside body. Weights must be painted white with car number painted on them.
1. If you have protest questions please discuss them with track tech as to what items are protestable.
2. Any car can be protested and is eligible to be protested the first night of competition, even at the beginning of the season, cars can be protested.
3. Protest must be in writing and handed to designated track official with monies and STEM license before the feature race by the protesting driver, $25.00 cash per item. Only requested items will be inspected. If there are multiple items protested, they must be included in writing and each item is $25.00 cash. No additional items can be added to the protest that night, after the protest is made.
4. The car protested will go to the inspection area after the feature race. Only two representatives for the protested car will be allowed with the car. Only one representative from the protesting car will be allowed to view inspection by STEM officials.
5. No safety items can be protested. Examples of items that can be protested are spring saddle location, trailing arm length, location of mounts, engine set-up, shocks, etc.