2007 Rules - Hobby Stock            1-29-07

  1. ROLL CAGE - Roll cage must be .095 inch tubing with at least 1.500 inch diameter for main cage and door bars.  No offset cages.  Four post roll cage must be used, with front and rear hoop welded to the OEM frame.  Rear hoop must have “X” brace, front down bars must be tied together. Must have a Petty Bar on driver side.  Rear kickers and front hoop must be minimum 1.25 inch tubing with .083 inch wall thickness.  Three horizontal door bars on both sides are mandatory.  Minimum of four uprights tied from frame to top door bar on drivers’ side.  May have two bars for protection in front of radiator, behind bumper, within confines of body, no wider than stock frame horns.  May tie front horns together.  All bars, front and rear, must be inside body.  Must have minimum of one cross bar in top of halo of roll cage.  Steel door plates, 18 gauge or .049 inch minimum thickness metal must be securely welded to outside of door bars on drivers side.  Plate must cover the area from the top door bar to the rocker panel and from the rear down post to five inches in front of the seat.  Must be visible for inspection.  Must have pick up chains front and rear.  Fuel cell protection bar must be used, mounted frame rail to frame rail, no higher than the fuel cell and inside the trunk area.  Maximum 1.75 pipe. 



     
  2. SAFETY  - Helmets are required and must be approved Snell SA95, SA2000 or SA2005 full coverage and must be worn at all times car is on the track.  All helmets must meet Snell standards.  Helmet must accompany vehicle at time of inspection.  Racing seat mandatory.  Must be attached to frame and cage.  No fiberglass seats allowed.  Fire suits of a flame retardant nature must be worn by all competitors.  Two-piece fire suits allowed. NO KART SUITS AND NO FLAME RETARDANT COVERALLS. Fire resistant gloves and shoes recommended. Flame retardant neck braces mandatory.  Left side window net mandatory.  A minimum of three safety bars must be installed in window opening in front of driver.  Screen may be attached.  Fire extinguisher is required and must be securely mounted within driver reach.

    Competition 3” shoulder harness, 3” lap belt and sub-strap are required.  No factory-type shoulder belts or straps.  Metal to metal buckles are required on shoulder and seat belts.  The shoulder harness should be mounted even with, or slightly above, driver’s shoulders.  Belts should be anchored to frame and cage.  Seat belts and shoulder harness recommended not to be more than 1 year old.  Kill switch required within reach of driver.  This switch must be clearly marked “on” and “off”. 

    Loose objects and/or weights must not be used in driver’s compartment or outside the body or hood area.  Any weights added to other areas of the vehicle must be securely mounted and should be painted white and have the car number on it.  Weights must be attached with at least two 1/2” bolts under the car body.
    360 degree drive shaft loop is required and must be constructed of at least quarter inch by two inch steel, or one inch tubing, and should be mounted six inches back from the u-joint. 



     
  3. ELECTRONICS - No  transmitting or listening devices allowed in car.  No digital gauges allowed on car.  No ignition control boxes allowed, OEM ignition only.  Tachometer allowed. No traction control devices.  If found, driver and car are suspended for four events plus loss of points for previous 4 weeks. 



     
  4. FUEL - Pump gas only. No performance enhancing additives.  Racing fuel cell required, no boat or stock automotive fuel tanks.  Must be securely fastened inside trunk of car and be mounted by at least two 1/8 inch thick solid steel straps, two inches wide around cell, above level of stock trunk floor.  Fire wall must be between driver and fuel cell.  All cell mounts must be steel, attached to frame cage.  No adjustable fuel cell mounts.  Fuel cell must be in a steel container.  Fuel cell vents must have check valves.  Fuel lines through driver compartment must be in metal pipe or metal conduit.  No fuel filters in drivers’ compartment.



     
  5. BATTERY - One 12 volt battery only. Must be in a marine type case securely mounted to frame or roll cage in a metal frame behind the seat or in trunk area.



     
  6. TIRES AND WHEELS - 14 to 16 inch D.O.T. approved passenger tires allowed not exceeding 10” wide at any point on the tire. No American Racers or Hoosiers allowed except for American Racers 205-70-15 Hobby Stock Tire is optional. No mud tires allowed. No softening or Grooving allowed. Tires may not extend outside the body of the car past the centerline of the tread at the top of the tire. Spoke steel wheels allowed.  IMCA wheels allowed.  Maximum 8 inch steel wheel. Bead locking devices allowed on right rear only.  Reinforcing of stock wheels recommended.  One inch lug nuts required. .  



     
  7. FRAME - Frame must match body.  Minimum wheelbase - 107.5 inches. No more than one inch difference from side to side.  Frames may be “X” braced. Back of engine block to the center of rear axles must be a minimum of 94 1/2 inches. Rear of frame behind rear tires, from a point no further forward than one inch behind the factory seam, may be replaced in stock location with two inch by three inch steel tubing with .095 inch wall thickness.  Factory seam must remain visible.  Must replace with the same length as material removed.  Unibodies must be tied - rear frame to front frame.  No station wagons, convertibles, front wheel drive, four wheel drive or rear engines.  Bumpers must be in stock location.  Front and rear bumpers must be capped to fender the width of the bumper.  No reinforcement of bumpers. Must have pick up chains front and rear.



     
  8. SUSPENSION - Must be original type suspension and match the frame.  Steel springs only.  No add-on quick steer boxes. Lead ballast must be bolted with two ½ inch bolts to frame and painted white with car number on it.  No weight jacks allowed. All shocks must be mounted in stock location.



     
  9. BRAKES - Master cylinder must be in stock location.  Approved OEM brakes on all four wheels must work.  No OEM Anti-lock Brake Systems. Rear wheel disk brakes allowed. No brake shutoff or bias allowed. No shutoff valves allowed in breaking system. Breaks must be stock with exception of optional rear wheel disk breaks.  No plastic brake lines.



     
  10. BODY - 1960 or newer American made stock passenger automobile with factory steel top. No Camaros, Firebirds, or Mustangs.  Sunroofs and T-tops must be reinforced and enclosed.  All bodies must be approved OEM.  Front and rear after market plastic nosepieces allowed.  No spoilers, wings, air scoops or anything that alters the stock appearance.  Hood must be separate from fenders - no one-piece or tilt front ends.  Hoods may be gutted.  No cutting out kick panels. All holes in front and rear fire walls must be covered with metal. Firewall and floor pans cannot be removed for trimming or relocation, has to be stock and in stock location. All hoods and trunks must be securely fastened and the back of the hood must be sealed off from drivers compartment with metal.  Maximum seven inch metal sun visor may be added to top of windshield opening only.  External rub rails allowed if flush with body.  All sharp edges, torn fenders and body panels to be repaired prior to next race.  Must have a minimum of three windshield bars in front of driver.  All glass, plastic, upholstery, rear seat, lights, mirrors and chrome removed.  Dash is not to extend more than 24 inches back from the center of lower windshield opening.  Dash must be flat except for cowl in front of driver.  All doors must be secured shut (welded, chained, bolted, no rivets).  The front inner wheel wells may be removed, but not the rear wheel wells. 



     
  11.  DRIVE TRAIN - Minimum 2.5 inch diameter steel drive shaft only and must be painted white and have car number on it.  All forward and reverse gears must be operational.  Transmission must be approved OEM automatic, with original bell housing and functional torque converter containing a minimum of three quarts of fluid, or approved OEM single disc type clutch inside an explosion proof steel bell housing on manual transmission only.  No corvette or aluminum flywheels.  Automatic must have an approved scatter shield (may be constructed of quarter inch by three inch steel) 270 degrees around flex plate of flywheel.  Torque converter must have a minimum 1/8 inch plug.  Steel axles only.  Nine inch Ford rear end allowed, but must be mounted like stock rear end for that make and model.  Rear end may be welded or mini spool, no full spools.  No floater rear ends.  Rear suspension must match frame.  No electronic or mechanical traction control devices allowed.   


     
  12. CAR WEIGHT RULE-Car must weigh minimum 3200 pounds with driver after race.


     
  13. NUMBERS - All cars must be numbered with large, legible numbers on both sides, top and rear panel.  Numbers must be in contrasting color from body in all light conditions.  Numbers on side of car to be at least 4 inches thick and 20 inches high.  Numbers on top must be at least 4 inches thick and 30 inches high.  Sign shop style numbers and lettering required.  No spray painted numbers or lettering allowed.



     
  14.  ENGINES - Steel head only.  Ford cars - no after-market or SVO heads.  Chrysler cars - no after market W2 heads.  Stock replacement: World Products Head;  # 955-043600 or #955-0436101-01 allowed. May run 64cc heads or larger. We will pump engines at random. No angle plug heads. No 2”, 1.6” or larger valve heads. If questionable you will have to pull one head. If you do not pull the head you will be DQ’D. Engine/head pro-test rule. $125 pro-test fee. If engine/head is illegal then protester gets fee back and if engine/head is legal then the protest fee goes to the protested driver.  If the engine/head is illegal then the driver will forfeit all points and cash and contingency winnings for the evening and car and driver are suspended from the Hobby Stock class for the next 2 events.



     
  15. ENGINE AND CARBURETOR - FOLLOWING RULES APPLY TO ALL ENGINES -
  1. ENGINE CLAIM -  $425 cash engine claim with exchange, $25 of this goes to the wrecker for pulling engine.  Claim does not include:  1) flywheel, 2) clutch, 3) pressure plate, 4) bell housing, 5) valve cover breathers, 6) carburetor and adapter, 7) starter, 8) motor mounts, 9) sending units and switches for oil pressure and water temperature, 10) fan and pulleys, 11) clutch ball, 12) clutch arm, 13) throw-out bearing, 14) dip stick, 15) water pump, 16) fuel pump, rod and plate, 17) distributor, 18) plug wires, 19) headers.

     

    First four position finishers (whether running or not) are subject to engine and carburetor or intake claim by any other driver finishing fifth on back in feature and on the same lap as the fourth place car.  Driver is allowed to make one engine claim or one carburetor claim or one intake claim per event, regardless of outcome of that claim.  In case of multiple claims, engine, carburetor or intake will go to qualified claiming driver finishing farthest back.  Driver making claim must drive his race car immediately after finish of feature, under its own power, directly to the claiming area.  Only drivers and officials allowed in claiming area.  Claims must be made within 5 minutes of end of feature race and claim must be accepted or denied within 5 minutes of offer. Claimed engine, carburetor or intake must be completely removed within one hour from the time claim is accepted.

    All claims must be made to track official.  Only drivers may claim.  Refusal to sell forfeits all points and cash and contingency winnings for that night and car and driver are suspended from the hobby stock class for the next two weeks.  No driver may claim more than one engine or one carburetor or one intake per regular season, plus number of times you have been claimed.  Must participate in two consecutive events to claim.

If the rules do not say you can do it, DON’T DO IT.

24 Raceway, LLC

PO  Box 553

Moberly, MO  65270

660-269-9300

(F) 660-269-9315

www.24racewayinmoberly.com