2023 HOBBY STOCK RACING RULES

GENERAL OVERVIEW OF HOBBY STOCK RACING RULES

1. The vision for the Hobby Stock Division is to offer a fun, affordable and safe class of racing. These Hobby Stock Racing Rules are designed to encourage a safe, competitive class with limited amount of performance and modifications while keeping a limit on expense. In no way will the rules be interpreted to allow a car that is technically superior to dominate the class or to be constructed in an unsafe fashion that poses a danger to the operator or
other competitors.

2. Drivers or passenger must be at least 13 years of age to compete in this class. (Proof may be requested at any given time under the Hobby Stock Racing Rules.)

3. All Vehicles will receive an initial safety inspection and approval before the vehicle is allowed to participate in the first race of the season. (There will not be any grace period given, you are legal or you’re not.) In addition all vehicles are subject to random inspections by Tech officials and to include race winners.

4. This class will have no tolerance rule for rough driving. If the vehicle is illegal, that vehicle will be moved up one division until the problem is resolved to the satisfaction of the Tech/Track officials and or Representatives.

5. All other track rules, policies and procedures will apply. The word “STOCK” means: unaltered as originally produced for that year, make and model including after-market replacement parts. Unless specified below. I.E. Chevy to Chevy, Ford to Ford, Dodge to Dodge under the Hobby Stock Racing Rules.

BODY STYLE UNDER HOBBY STOCK RACING RULES

  • Domestic full-size two wheel drive passenger cars only, to include station wagons, El Caminos and Rancheros under the Hobby Stock Racing Rules.
  • No pick-up trucks, vans, jeeps, sport utilities or convertibles.
  • No 4 or 6 cylinder vehicles will be allowed without prior track approval.
  • Front and rear bumpers mandatory. All bumpers front and rear must fit within stock bumper or bumper cover area and will curve back towards car body, which to eliminate any kind of hook that could catch on another car. (after market/homemade bumpers are subject to approval by tech committee).
  • No bumper higher than 22” will be allowed under Hobby Stock Racing Rules.
  • Stock steel unaltered floor pan and Front firewall. Trunk and rear wheel wells may be removed. OEM floor may be repaired/replaced with .049 steel but must remain OEM dimensions. OEM fire wall may be repaired/replaced with .049 steel but must remain OEM dimensions. Firewall may be flat or straight and may be moved back to 6 inches from back of motor under the Hobby Stock Racing Rules.
  • Trimming of manufacturer’s structural body must be approved by the tech committee under the Hobby Stock Racing Rules.
  • The front wheel wells may be removed.
  • The body and fenders may be cut for tire clearance.
  • All doors must be welded or bolted shut.
  • OEM and Aftermarket body panels allowed. The car must retain the stock look.
  • Unibodies may tie rear frame to front frame.
  • The vehicle must weigh 3150 pounds minimum with driver. With 8inch wheels.
  • The vehicle must weigh 2950 pounds minimum with driver. With 7inch wheels.
  • Hood of the car may be cut for air cleaner fit.

CHASSIS & SUSPENSION UNDER HOBBY STOCK RACING RULES

  • All cars will have unaltered chassis, suspension under the Hobby Stock Racing Rules.
  • Shocks and springs must be in factory mounted position.
  • Racing shocks, springs OK. No suspension modifications are allowed (ie axle tie down, weight jacks, etc.) 
  • Quick release steering wheels are allowed.
  • Tubular upper control arms are permitted, they must retain the stock mounting location +/- ½ inch of stock length (stock length is: Camero 9-1/4, Metric 8”).

BRAKES, WHEELS & TIRES UNDER HOBBY STOCK RACING RULES

  • Factory brakes, no modifications allowed all four brakes must be in working order.
  • Steel factory wheels, reinforced or aftermarket steel spoke type wheels are allowed. Max 8” wide. No homemade wheels, RR bead lock only
  • Hoosier G60, American Racer KK704, or Street tires only, DOT radial no larger than 275/60/15. No studded snow or all terrain tires of any kind allowed.
  • Cross grooving is permitted.

ENGINE, TRANSMISSION & REAREND UNDER HOBBY STOCK RACING RULES

  • The vehicle must start under its own power and have both forward and reverse motion.
  • Normally aspirated engines, carbureted only.
  • May be a maximum of (360c.i.d for Chevy) (363c.i.d. for Ford) (368c.i.d for Dodge).
  • Crate option GM 19258602 CT350 GM-Sealed 602 Chevy Crate Engine.
  • Must be sealed.
  • All power train items to be located in their original position and locations.
  • ENGINE SET BACK, The centerline of the leading spark plug hole must be even with, or in front of, the centerline of the upper ball joint.

INTAKE TO OIL PAN, WATER PUMP TO REAR TRANMISSION WILL REMAIN STOCK IN NATURE UNDER HOBBY STOCK RACING RULES

  • Hydraulic Cam only.
  • Must be cast iron exhaust manifolds. Center dump-type manifolds are not allowed. 1-5/8 headers are permitted. Approved Chevrolet headers are Hedman P/N 68600 and Hooker P/N 2466HKR or 7543HKR. All others are subject to approval.
  • If utilizing headers, a mandatory two and one-quarter (2.25) inch O.D. diameter exhaust pipe(minimum 15 inches long) must be utilized.
  • Only stock, unaltered two- or four-barrel low-rise cast-iron intake manifolds or approved aluminum intakes are permitted. Approved aluminum intakes are: GM – Edelbrock (#2101 or #2701) or Weiand (#7547 or #7547-1); Ford – Edelbrock (#2121, #2171 or #2665) or Weiand (#7515, #8023 or #7516); Chrysler – Edelbrock (#2176) or Weiand (#7545 or #8022). Porting, polishing and/or port machining is not allowed. Bowtie, aftermarket, SVO and W2, marine, or other special production intake manifolds are not allowed.
  • Cast iron stock production or aftermarket steel stock replacement heads are permitted. Porting and/or polishing is not allowed. GM cars must be 76cc heads or larger (approved
    head numbers are 336, 339, 388, 441, 454, 487, 624, 813, 882, 991 and 993). Aftermarket head numbers are: GM – EQ Part #CC167ES2 or #CH350I; Dart Part #10024267 or #10024360; World Products Part #043600 or #042670; E-Force Part #175762 or # 175769; Ford – World Products Part #53030; Chrysler – EQ Part #CH138B; RHS/Indy Part #20300 or #20301. Valve size no larger than 2.02 intake and 1.60 exhaust.
  • Beehive valve springs are not allowed.
  • Vortec Heads allowed
  • The use of aftermarket valve covers, water pump, oil pan and radiator are allowed.
  • ALL Other aftermarket non-performance enhancing components are subject to approval by the Tec committee.
  • Engine overbore is maximum of .060, No Strokers
  • Compression cannot be more than 9-1.
  • No Racing Transmissions.
  • Transmission components will remain stock in nature. Automatic or manual OK
  • All standard transmissions must have shatter proof bell housing or a protective scatter shield. Scatter shield must be a minimum of 3/16” thick.
  • Ford 9” allowed but must be mounted in stock location.

CARBURETOR UNDER HOBBY STOCK RACING RULES

  • 2 barrel Carburetor only. Holly 4412 500 cfm max, or factory STOCK 2 barrel carburetor only. 1 inch thick adaptor max if using 4412.
  • A four barrel to two barrel adaptor is allowed but cannot be thicker than 1 inch. FUEL TANK/CELL
  • Fuel cell required and must be in the trunk and separated from the driver’s compartment by sheet metal and protected from impact.
  • No fuel lines will be allowed in the driver’s compartment unless it is enclosed in conduit.

SAFETY - HOBBY STOCK RACING RULES

  • All glass, lights, trim, mirrors and plastic must be removed from interior and exterior. All combustible interior to be removed.
  • The use of an aluminum racing seat is required.
  • A full front window screen (metal mesh) with a metal support in the center, or 3 Metal bars in front of the driver is required.
  • The following equipment and safety specifications are the minimum requirements to participate in the Hobby Stock Division. Any additional safety equipment is strongly
    encouraged.
  • Driver and passenger must have a SA 2000 or better Helmet.
  • SFI approved fire suit, neck brace, SFI Gloves and shoes.
  • Window net is required for the driver side and if a passenger is in the vehicle the passenger side also, and must be in reach of the occupants.
  • A five point harness is required for all occupants and must be 3” wide and approved with in the last 5 years. (Frayed or worn belts may be considered unsafe by the
    Tech.).
  • A two pound fire extinguisher is required and must be mounted within the drivers reach.
  • Battery will be soundly secured in the trunk, or in the driver’s compartment in a battery box to the satisfaction of the Tech officials.
  • Passenger must be provided with a “hang on” bar. This may be mounted from the dash, floorboard or door bars and must be accessible to passenger while belted in.
  • The location cannot impede entry and exit of passenger from the vehicle in the event of an accident.
  • The driver side door and if passenger is to be in the vehicle the door(s) must have 3 horizontal bars from the front upright to the rear upright of the cage. Ladder bracing
    and gussets are required on all door bars.
  • A 1/16th inch door plate is mandatory between the door bars and the outer skin. This is required on the driver side and if a passenger is in the car on the passenger side.

ROLL CAGE

  • Roll bar requirements are a minimum 1 1/2inch .095 wall thickness steel tube/pipe.
  • One overhead and two rear support kickers with one cross bar behind driver and passenger seats.
  • Roll bar should be welded to frame when possible, if welded to a floor pan a 3x3 1/8 steel plate is required at all junctions plus 3x3 1/8 backing plate is required.
  • Front and rear loops are allowed.
  • A full cage is recommended for the vehicle. The drivers head must not protrude above the top of the cage. Roll bar padding is recommended where the driver could come in contact with the cage bars.

MISCELLANEOUS

  • A master kill switch is mandatory and must be in an accessible location to track officials and labeled.
  • Tow chains are required on the front and rear of the vehicle securely fastened to bumper or frame.

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