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2012 Season MAD Rules
see also General Rules


  1. Roll bars must consist of continuous hoops not less than 1.750 inch outside diameter and must have a wall thickness minimum of .095 inch.
  2. Roll bars must be frame mounted in at least eight (8) places.
  3. Driver's head must not extend above roof loop with helmet on and strapped in car.
  4. Foot protection consisting of bar or plate is mandatory
  5. Driver door bars must be parallel with the ground and located so as to provide maximum protection for the driver. The side bars must be welded to the front and rear of the roll cage members. Door bars of less than .095 inch thickness are not allowed. A minimum of three (3) bars at 1.75 OD or four ( 4) bars at 1.50 OD must be used.
  6. A 0.090 magnetic steel plate attached to driver’s side door bars is required.
  7. Right side door bars should be a minimum of an “X” or 3 parallel bars. This rule will be mandatory for 2013 and is highly recommended for 2012.


  1. A-arms must be magnetic steel.
  2. No independent rear suspensions allowed. Axle tubes made of magnetic steel only.
  3. No aluminum or fiberglass suspension parts are allowed, except for panhard bar and top link. Any type of front sway bar is permitted, but arms on after-market sway bars must be made of steel.
  4. Any type of shock is allowed  (Future season will have a spec shock, to be determined.)
  5. Spindles must be magnetic steel.
  6. Wheelbase must be a minimum of 105 inches.
  7. Frame and body height will be a minimum of four (4) inches at all times.
  8. Firewall and floorboards are mandatory.
  9. Rear of bodies must have a solid panel at least eight (8) inches minimum and 22 inches maximum in height and must extend
    completely across rear of car. No open rear bodies allowed. Spoiler is to be no wider than the width of the rear body and maximum 5
    inches high.
  10. Engine compartment sides must remain open. Hood sides may have maximum of six (6) inch drop and must be enclosed at rear of the hood.
  11. Front windshields must be complete from dash to roof, a minimum of 14 inches wide, constructed of 3/16" Lexan. The windshield must not extend beyond the centerline of car or above roof line. Braces are required to support the Lexan windshield.
  12. All cars will be numbered on both sides, roof and in one of the “head/tail light” areas at both ends of the car.
  13. All cars will be numbered on both sides, roof and in one of the “head/tail light” areas at both ends of the car.
  14. Maximum body width will not exceed 66” wide and 44” high measured to the top of the spoiler from the ground.


  2. Any shock may be used, any shock may be claimed.
  3. No bump stops
  4. Shock claim procedure.

Top 3 finishers are subject to claim
Top 5 finishers MAY claim
Shocks may only be claimed post race before the car to be claimed exits the tech shed.
Claim must be posted in cash at the time of tech by the driver only of the claiming team.
*MAD officials reserve the right to claim ANY shock on ANY car for the $160.


  1. Bumpers must be used in both the front and rear of car. Bumpers must be able to support the car if lifted by a wrecker. The rear bumper must be of rounded construction with no sharp edges on outer ends. “I Beam” bumpers are allowed. The ends of the bumper must be a complete arc or connect to the rear rub rails.
  2. Center of bumpers must be eighteen inches above the ground plus or minus two (2) inches. NO COW CATCHERS OR ANGLED FRONT BUMBERS.
  3. Nerf bars must extend between one inch plus or minus to outside edge of the tires. Rear Nerf bars are strongly recommended.


  1. Only OEM-type transmissions allowed, No  in-out boxes, overdrives, couplers, or buttons allowed. All cars must have operable reverse gear and be able to back up and move forward from standing position.
  2. Clutch-type transmissions must be equipped with approved blowproof bell housing. A transmission blow-proof cover shield is
    required for automatic transmission cars.
  3. All flexplates must be OEM or SFI-approved. No FFI or other manufacturer of lightened flexplates allowed.
  4. Drive shaft will be painted white and have car number on it. Car must be equipped with a driveshaft strap made of steel that is a minimum 3/16" thick by a minimum two (2) inches wide.


  1. No anti lock. Tires and wheels.
    1. Only 8-inch steel wheels are allowed.
  2. All Competitors will use the approved MAD spec. Tire.


  1. All drivers must wear a helmet that is a Snell SA 2000, or Snell SA 2005. All helmets must be inspected by the Tech director. Helmet must accompany car at time of inspection.
  2. All drivers must wear fire suits made of flame-retardant material. Suits will be kept in presentable condition.
  3. All drivers must wear flame-retardant gloves. Flame-retardant hood, socks and shoes are highly recommended. Gloves and other safety equipment covered by grease and/or oil and not cared for properly should be replaced.
  4. The driver's competition shoulder harness and lap belt must be at least three (3) inches wide with a submarine strap. Metal to metal buckles are required on shoulder and seat belts. The shoulder harness should be mounted even with or slightly higher than driver's shoulders. Belts that are weathered or frayed will not be permitted for racing use.
  5. Approved "Hans-type" head and neck restraint is mandatory.
  6. Fireproof driver's side window net is mandatory and will not be accepted if cut, tattered or frayed.
  7. All cars must be equipped with an on-board fire system/extinguisher that is fully charged and accessible to the belted driver.
  8. All roll bars within the driver's reach of his/her leg or arm must be padded with acceptable padding.
  9. The steering wheel will have a safety pad in the center.


  1. Racing fuel cells are required. Maximum capacity of fuel cell is 22 gallons. Minimum clearance from ground to lowest point of fuel cell is eight (8) inches. The fuel cell must be enclosed in a metal container constructed of a minimum of 22-gauge steel. It must be
    securely mounted in race car with at least two straps widthwise. Straps have to be a minimum of 1/8 inch thick by one inch wide (steel only).

All cells must have closed cap or check valves on gas fill and vent. Fuel cell vent must exit on outside of rear panel, approximately 12 to 18 inches from left side of quarter panel.


  1. Each car is allowed only one (1) 12-volt battery. Batteries must be
    securely mounted and shielded.
  2. All cars must have an electrical cut-off switch mounted in the center of the car or in the center of the dash. This switch must be labeled ON and OFF.
  3. All cars must be equipped with a self-starter.
  4. Alternators may be used.
  5. No electronic traction control, traction control devices can be extremely difficult to find if possible at all. MAD officials reserve the right to deny competition to any team that presents sufficient evidence in performance that such a device exists.


  1. Any American production passenger car engine is allowed.
  2. Mounting locations on block cannot be altered from OEM, i.e., framemounts, starter, fuel pump, etc.
  3. Engine must be mounted at least 72 inches forward from the centerline of the rear axle housing, measuring to the bell-housing
    flange at the rear of the block. The distance from the center of the crank to the ground can be no lower than 11 inches. Engine must be mounted between front frame rails. If the crank center line is below 11” and or closer to the rear end housing than 72” a 55% max left side weight rule is in affect.
  4. Carburetor must be a Holley 500 CFM. 2 BBL The maximum butterfly and venturi diameter is 1.750 inches. No sleeving of venturi or booster modifications allowed.  No air leaks in the manifold, spacers or adapters below the venturi’s.
  5. No aluminum engine blocks. Cars with aluminum heads must bolt 50#s to the upper section of roll cage parallel to the engine. 25#’s on each side positioned between the balancer and the bell housing and not below the “head to block line” (this does not apply to 93 octane pump gas cars cars)

PUMP GAS (not to exceed the specific gravity of unleaded 93 octane)

  1. Fuel delivery system- any, no superchargers or turbochargers. Car must be equipped with a fuel pump equipped with a manual, roll over and low pressure shut off if an electric pump is used.
  2. Car must weigh a minimum of 2,450 lbs, 59% left side max.


  1. Race gas powered cars must weigh no less than 2650#’s with a maximum left side of 58%
  2. Added weight must be in block form.
  3. Full tube chassis (NASCAR Type modified) have a maximum left side weight of 55%

Any team choosing to race pump (93 or less) octane will be provided whatever advantages are needed to keep them competitive. You are paving the future to more affordable racing and we owe it to you to share the technology to help this sport continue to grow into the 21st century.

The purpose of this set of rules is to allow as many types of modifieds to race equally at an affordable level. Future rule modifications to be phased in are Spec shocks and the standard Holley 4412 1 11/16” bore 2 BBL carb for cars on racing fuel. The long term goal is to get all the cars racing on fuel that is under $4 per gallon.



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