THUNDER RULES 2019

WEIGHT

  • 3400 lbs

BODY

  • American made rear wheel drive only
  • Stock body only, no excessive hulling allowed.
  • Must retain OEM front fire wall and complete floor pans.
  • Trunk and rear fender wells may be removed.
  • OEM spoilers are allowed. Aftermarket or fabricated spoilers must not exceed 6 inches in height.

CHASSIS

  • Stock – no weight jacks, no three links, no adjustable links, no coil OVER
  • All control arms front and rear must remain stock.
  • Standard steering box and steering linkage.
  • Coil springs minimum 5″ coils.
  • Shocks must be stock type.
  • Chevrolet can run ford 9 inch. No floaters.
  • Roll cage – Must be minimum of 1 12″ OD tubing .095″ thick.
  • Must have a minimum of 3 driver door bars and 2 passenger door bars.
  • Must have support bars behind driver. Must be welded to frame.
  • OEM brake system must be used.
  • Rear disc brakes are allowed but must be original equipment. No aftermarket parts including calipers, rotors and pads, etc. are allowed.
  • Wheelbase – 108″ minimum.
  • Wheels – Steel 8″ maximum width. Bead locks allowed right side only. 1″ lugs nuts mandatory.
  • Racing fuel cell – Mandatory. Enclosed in steel can, with minimum of two 2″ wide steel straps.
  • Fuel- Gasoline only or E-85 (no nitrous or additives).

TIRES & WHEELS

  • Open Wheels Tires
  • May run beadlocks anywhere on car.

DRIVESHAFT

  • Any steel type, must be painted white with car # on it. Safety loop mandatory.

REAR END

  • Stock, locked, or welded rear end is allowed for make

TRANSMISSION

  • Stock automatic transmission with working converter. If you have a dust cover it must have a hole for inspection.

Three steel vertical bars mounted in windshield opening in front of driver.

SAFETY

  • Racing seat mandatory.
  • Four point harness mandatory.
  • Fire extinguisher mandatory. Must be in working order and attached in car.
  • Battery must be securely mounted in a box or case. If battery is inside car it must have a cover.
  • Add on weights must be painted white with car # on them and securely bolted to car.
  • Window net recommended.
  • Must have tow hooks front and rear.

ENGINE

  • 362 cubic inch
  • Maximum engine set back – stock location for make and model.
  • No superchargers, turbo, etc.
  • Fuel system and carburetors – stock type fuel injection is ok but must be stock.
  • Holley two barrels, Holley vacuum secondary carburetors are ok.
  • Exhaust – Stock manifold. Headers are OK. Cams – Any flat tappet.
  • Intake – must run a dual plane intake only with no modifications. Stranded design (no air gaps or torks) Ignition – Stock type HEI.
  • Heads 487,493,993,997,545,624,882,416,193,460 on Chevy engines.
  • Any other Chevy head – add 100lbs (no race type heads of any kind).
  • S/R heads are ok but must add 100 pounds. All heads must be steel.
  • No angled plug heads.
  • No port and polish. Stock diameter valve springs only.
  • Stock stroke and bore (070 over bore ok) stock link rods.
  • Tock weight rods.
  • No light weight rods or No billet rods.
  • Flat top or dish pistons only.

VALVE SIZES

  • Chevy-2.02/1.600
  • Ford-2.02/1.600
  • Ford (Boss or 35im35ic)-2.19/1.72
  • Chrysler-2.02/1.600
  • Any OEM FORD head allowed.
  • Boss or 4-barrel Cleveland heads must add 100 pounds.
  • Intake – must run a dual plane intake only with no modifications. Stranded design (no air gaps or torks) Ignition – Stock type HEI.
  • Heads 487,493,993,997,545,624,882,416,193,460 on Chevy engines.
  • Any other Chevy head – add 100lbs (no race type heads of any kind).
  • S/R heads are ok but must add 100 pounds. All heads must be steel.
  • No angled plug heads.
  • No port and polish. Stock diameter valve springs only.
  • Stock stroke and bore (070 over bore ok) stock link rods.
  • Tock weight rods.
  • No light weight rods or No billet rods.
  • Flat top or dish pistons only.

PROTEST FEES

  • Pull Valve Cover – $50 (track keeps $25)
  • Pull First Head – $300 (track keeps $100)
  • Pull Second Head – $100
  • Pull Heads, Intake, Carb and check Bore & Stroke – $400 (track Keeps $100)
  • Pull Oil Pan – $150 (track Keeps $50)

Track reserves the right to inspect tires, wheels, body, engine and anything deemed necessary to promote fairness.

MISCELLANEOUS

  • Raceceivers are MANDATORY at ALL times a race car is on. Any driver without an operating raceceiver on their person will be sent to the pits! NO EXCEPTIONS!
  • Transponders are MANDATORY during heat races, qualifying, and/or features. Any car rolling onto the track without a transponder will be sent to the pits or their qualifying times disallowed.

SAFETY

  • ALL safety rules listed under Section 11 of the General Rules (SAFETY) will apply here. NO EXCEPTIONS! For the sake of saving paper, they will ONLY be listed on the General Rules! It is your responsibility to comply with our Safety Rules found under General Rules!!!