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2018 Modifieds of Mayhem

Modifieds of Mayhem Rules 2018

The rules and/or regulations set forth herein provide for the orderly conduct of racing events and to establish minimum acceptable requirements of such events. These rules shall govern the condition of all such 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. Rules 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.

* Speedway Officials shall be empowered to permit minor deviations from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements. No expressed or implied warranty of safety shall result from such alteration of specifications.

*Speedway reserves the right to update, modify, and/or delete rules at any time deemed necessary to insure safety, fair competition or any other reason that may be appropriate.

*Cars, parts and or equipment will not be considered as having been approved by having passed through inspection at any time or number of times unobserved or undetected.

*Any interpretation or deviation of these rules is left to the officials. Any decision of and by Speedway Officials is final.

*Unsportsmanlike-like conduct can carry a minimum $100.00 fine and/or suspension. Any and all fines will be added to the point’s fund at the end of the racing season.

*All Discussions with officials must be conducted in a professional manor.


2500 minimum “Pro Late” 604  Crate engine

2550 minimum “Steel Head” Built engines

2600 Minimum “Aluminum Head” Built Motor

  • All car 58.0% Left side maximum without refueling.
  • This rule has been updated to the correct wording.All lead (No Tungsten) must be mounted with a minimum of two (2) ½ inch bolts. All weights must be painted white or florescent with the car # painted on each piece. Any driver that loses any lead from their car will be fined $ 10.00 per pound payable prior to any further competition. This rule is in effect during race day or practice days.
  • No titanium products, parts, components or gun-drilled, tubular, hollow bolts or studs allowed on chassis or suspension.


  1. No aluminum blocks or Dry Sump Systems allowed.


  1. Only One 2 barrel or 4 barrel will be allowed
  2. Right Front carburetor stud must have a 1/8”hole for sealing purposes.
  3. Must qualify and race with the same combination. No externally adjustable restrictor plates will be allowed.



  1. MSD or Crane ignition boxes allowed. No Traction Control.  7600 rev limiter required.


  1. Sunoco Racing Fuel only with no performance-enhancing fuel additives of any kind. Fuel cell required and a 22 gallon maximum and mounted no lower than rear housing. Lines to fuel pressure gauge must be steel braided type.
  2. Oberg # SV-0828 or SRI # FFF-FSV Fuel Valve will be mandatory.


  1. Must maintain 4″ ground clearance at all times. Factory production complete full 1960 or newer parallel American passenger car frames only with a Minimum wheelbase 108”.
  2. Frames may be cut in rear only no more than 36 inches from center of rear end housing. Must be full and complete both sides and not narrowed.


  1. Front steering must be unaltered and be in stock location unless noted. Aftermarket drag link allowed. Tie rods and adjustment sleeve may be replaced with 5/8” heims and tube. Spindles must be steel. Bottom A-frames cannot be altered or moved. Steering box must be steel approved OEM and must remain within original bolt pattern for type of frame used. No rack & pinion allowed.
  2. Minimum of 500 pound front spring rate and Absolutely no bump-stops, coil binding, short shock shafts or chassis stops of any type and will be checked by putting front tires on ½” blocks and cross-member/nose on the ground 
  3. Coil over kits with minimum of 4.5″ springs on rear only. A maximum 2 spring rubbers allowed per spring. No driver adjustments will be allowed from cockpit except Brake Bias knob. Front sway bar must be stock appearing and maximum diameter of 1 3/8”.


  1. Front and rear brakes must consist of stock appearing components only and must lock up all four (4) wheels.
  2. Only one brake bias adjuster allowed inside cockpit.


We are taking control back on bodies in 2018; don’t make us put the IMCA body template back in these rules.


  1. Full roof is mandatory and must cover complete halo bar. No drip rails allowed.
  2. Body sides must mount straight on chassis (measured with 6’ foot straight edge on RR wheel and be equal) with a maximum length of 120″ starting from back of engine, maximum width of 66″ and maximum body rake of 6” must be straight front to rear and flat.
  3. Sail panels can’t attach to rear spoiler and must be no closer than 2” from spoiler. Maximum front nose width 43 ½ inches and all non Five-star noses may have a maximum of Two 2 ½” lips on top of nose only, no splitters, ledges or fins.
  4. Right side A-post must be within 8″ of outside of car or add 50 pounds. A 12″ maximum length triangular enclosure at the ‘A’ pillar will be allowed but not included in 8” measurement. No interior or exterior wings, belly pans, double skinned roofs, fins, wings, vanes, vertical ledges, ramps or any other air directing devises are not allowed. Engine compartment must remain open. All cars must have steel side nerf bars mounted even with outside of tire. Must maintain 4″ ground clearance at all times.
  5. 8” panel required in Rear / 90 degrees to the ground. Must be solid, attached to the deck and extend to the quarter panels, securely fastened

All body rules are at the discretion of tech official and must be met or a minimum of 50 pounds per infraction will be accessed.


  1. Maximum of a 5″x 60″ rear spoiler centered on body with maximum of 4 straight forward braces no longer than 16” and no taller than spoiler. May use Rear “Late Model “Braces. Gurney flaps or curls are allowed but will be included in all measurements.



  1. Height 20” Max – 16” Min (Ground to center of Bumper front and Rear)


  1. Hoosier R-750 Tire on 8″ steel wheels only
  2. Drivers soaking or altering tires in any way will forfeit all purse and points for the event. Driver must also pay a $1,000 fine prior to being allowed to compete at Speedway. Any illegal tire, in the judgment of Speedway Officials, will be confiscated.
  3. Maximum overall track width shall not exceed 80″ from outside of tire to outside of tire and will be measured at hub height. No wide-five hubs allowed.
  4. Cars must qualify and race on the same tires. Scuff may be used in case of flat.


  1. Fire suits, Gloves, Shoes, Approved Helmet and Head and Neck restraint required.
  2. 5-point harness and window net required no older than 5 years and must mount to chassis.
  3. Roll Bar padding required within all areas of drivers reach.
  4. Aluminum Racing seat only and must mount securely to chassis.
  5. Steel or Aluminum drive shaft only and must be painted white with two (2) drive shaft loops.
  6. All cars must have minimum of a 2-pound fire extinguisher with a gauge and a quick release mounted securely in car within reach of driver while belted in car.
  7. All MOM Teams must have a Minimum 10 Lb. Fire extinguisher in pit area.
  8. TRACK OFFICIALS must approve all safety equipment. The Chief Tech Inspector shall be authorized to make changes from any specifications contained within these rules as a situation may dictate. Any infraction not specified in these rules may incur a weight penalty. Furthermore, the Chief Tech Inspector may impose further restrictions in an attempt to maintain fairness. Under no circumstances may the tech inspector alter any safety rule to less than stipulated. ANY VARIANCE OF THESE RULES BY PARTICIPANTS THAT MAY ULTIMATELY LEAD TO REDUCTION IN SAFETY, OR AN INCREASED RISK, TO ANY PARTICIPANT, WHETHER ENFORCED BY THE CHIEF TECH INSPECTOR OR OTHERWISE, SHALL BE THE EXCLUSIVE RESPONSIBILITY AND LIABILITY OF THE PARTY OR PARTIES RESPONSIBLE FOR THE VARIANCE. THE MANAGEMENT OF THE TOUR, SPEEDWAY AND THE PROMOTERS SHALL NOT BE RESPONSIBLE OR LIABLE FOR ANY VARIANCE FROM THESE RULES AS PROVIDED.


  • Only drivers may protest. Protesting drivers and protested cars must have finished in the top 5 and be on the lead lap. All protests must be specific and submitted to pit officials in writing within 10 minutes of feature race completion, and be accompanied by $300 per item (Cash). Spite protests and unsportsmanlike-like protests will not be accepted. The driver who wins the protest will receive $225.00. Both protested and protesting cars will be checked Driver can only protest 2 times in one season and must wait five weeks before protesting again. Drivers or cars found illegal forfeit all points and moneys earned for the entire race meet. Refusal to comply with a protest or to tear down when instructed by Speedway Officials will result in a fine equal to protest amount, an automatic two race suspension for driver and loss of points and moneys earned for the evening. Upon returning to competition driver must agree to tear down after racing events at their own expense.
  • All cars must meet noise level specification of 100 db at 100 Feet at MMS or any track with a muffler or DB rule.

Permanent link to this article: http://www.montgomerymotorspeedway.org/division-rules/2017-mod-of-mayhem-tour/