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2024 HOBBY-602 RULES

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SAFETY

DRIVER SAFETY IS THE DRIVERS RESPONSIBILITY! THIS IS NOT THE AREA OF THE RACE CAR TO TRY TO SAVE MONEY.

1: ALL CARS MUST HAVE 3" SEAT BELTS WITH SHOULDER HARNESS, AND MUST BE ATTACHED TO

ROLL CAGE. 2 YEARS MAXIMUM AGE RECOMMENDED. 5 YEARS MAXIMUM

2: COMPLETE FIRE SUIT MANDATORY. up TO DATE NO HOLES

3: GLOVES AND RECOMMENDED

 4: FIRE SUPPRESSION RECOMMENDED. IF NO FIRE SUPPRESSION YOU MUST HAVE A WORKING FIRE EXTINGUISHER IN THE CAR WITHIN REACH OF THE DRIVER.

5: HEAD AND NECK RESTRAINT AND/OR CONTAINMENT SEAT RECOMMENDED.

 

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ENGINE RULES:

1. CHEVROLET PERFORMANCE PART NUMBER 88958602/19258602

2. THE SEALED ENGINES MUST REMAIN INTACT AND NOT BE TAMPERED WITH. ANY SEALS THAT HAVE BEENREMOVED OR TAMPERED WITH WILL MAKE THE ENGINE ILLEGAL AND NOT ELIGIBLE FOR COMPETITION. THEPENALTY FOR ANYONE TAMPERING WITH SEALS, MODIFYING ANY

INTERNAL ENGINE PARTS, OR CHANGING THE PARTS FROM STOCK AS DELIVERED SEALED FROM THE FACTORY WILL BE SUBJECT TO EXPULSION FROM RACING WITH ANY THUNDER SERIES SANCTIONED EVENT FOR THE REMAINDER OF SEASON ANDFUTURE SEASONS.

1. ANYONE RUNNING A RESEALED ENGINE WILL BE REQUIRED TO CARRY A PENALTY OF 50

POUNDS 25 WILL BE REQUIRED TO BE IN FRONT OF THE RACK AND THE OTHER 25 WILL BE REQUIRED TO BE IN FRONT OF THE MOTOR PLATE. THIS CAN AND WILL BE TAKEN OFF AND WEIGHED.

1. IN THE EVENT OF SOMETHING LIKE A LIFTER BUSTING OR BUSTING AN OIL PAN WE WILL HAVE THUNDER SERIES SEALS THIS YEAR SO WE CAN RESEAL SOMEONES ENGINE. AT ANYTIME IF A

HEAD OR TIMING COVER HAS TO COME OFF THE 50 PENALTY WILL HAVE TO BE INFORCED

1. NO CHANGES ARE ALLOWED TO THE ENGINE - INCLUDING BUT NOT LIMITED TO INTAKE MANIFOLD, HEADS,VALVE COVERS, FRONT COVER. OIL PAN, HARMONIC BALANCER, OR ANY OTHER PART/OR PARTS ON/OR IN

2. NO VACUUM PUMPS

3. ALL CRATE ENGINES MUST REMAIN STOCK AS THEY CAME SEALED FROM THE FACTORY. CRATE ENGINES MUST NOT BE ALTERED, MODIFIED, OR CHANGED FROM FACTORY SPECS

4. THERE WILL BE A $1,550 PROTEST ON A CRATE ENGINE. $300 ACCEPTANCE FEE.

THE WEIGHT PENALTY WILL NOT BE ADDED AS LONG AS THE ENGINE IS DECLARED LEGAL. $800 WILL GO TO THE ONE PROTESTED $200 WILL GO TO THE SERIES

9: THERE WILL BE A $6,500 CLAlMER RULE ON A CRATE ENGINE. IFYOU CLAIM THIS ENGINE YOU ARE NOW RESPONSIBLE FOR THIS ENGINE

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CARBURETOR RULES:

1: ONE 6504 BARRELL CARBURETOR

2: ENGINE MUST BE NATURALLY ASPIRATED

3: MAY USE ONE 1 INCH, ONE PIECE, CARBURETOR SPACER (.040 TOLERANCE MAXIMUM) AND TWO

STANDARDPAPER GASKETS (MAXIMUM 0.070 INCH THICK); ONE GASKET BETWEEN INTAKE TO SPACER AND ONE GASKET BETWEEN SPACER TO CARBURETOR

4: WILL BE CHECKED WITH THE GO NO GO GUAGES.

5: NO SUPER BOWLS OR ICT BOOSTERS

6: ALL CARBURETORS MUST HAVE CONVENTIONAL STYLE FLOATS ALONG WITH NEEDLES AND SEATS. NO INDIVIDUAL CYLINDER TUNING OR EQUIVALENT ALLOWED.

7: Al I CARBURETORS MUST HAVE CONVENTIONAL •HOLLEY STYLE" STRAIGHT LEG BOOSTERS.

 

DISTRIBUTOR RULE:

1. MSD IGNITION SYSTEM. NO CRANK TRIGGER, DISTRIBUTORLESS MULTI-COIL,

OR MAGNETO IGNITION SYSTEM. 6AL OR 6ALN, or MSD 6CT IGNITION BOX ALLOWED. (NO GCT PRO) MUST BE A 6300 CHIP OR SET AT 6300.

1. NO ELECTRONIC TRACTION CONTROL DEVICE

3: CAN RUN HEI TYPE DISTRIBUTOR BUT MUST HAVE SOFT TOUCH BOX WITH 6300 CHIP.

4: IF YOUR CAR HAS TWO MSD BOXES IT MUST HAVE A 6300 CHIP IN EACH BOX NO MATTER WHAT.

5: $325 CLAIM RULE ON THE MSD BOX

 

STARTER RULE:

1. ALL CARS MUST HAVE WORKING STARTER

 

EXHAUST RULES:

1. COLLECTOR TYPE HEADERS REQUIRED. MUST HAVE FOUR (4) TUBES INTO ONE (1) COLLECTOR OF A CONSISTENT DIAMETER

2. MUFFLERS NOT REQUIRED UNLESS TRACK MANDATED. IF/WHEN MANDATED: MUFFLERS MUST HAVE SOME TYPE OF INTERNAL NOISE DAMPENING CHARACTERISTICS (BAFFLES, EXTRUDED HOLES, SCREEN, CHAMBERED, ETC.) MUFFLERS MUST MEETLOCAL SPEEDWA Y'S NOISE DECIBEL REQUIREMENTS. EXTERNAL MUFFLERS ONLY.

3. NO TRI-Y HEADERS

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WATER PUMP

1 :CAST OR ALUMINUM PERMITTED. STOCK MOUNTED WATER PUMP AND FANS ONLY. NO ELECTRIC

FANS

2: NO ELECTRIC WATER PUMPS.

 

FUEL:

1: 93 PUMP GAS OR 110 & E85 Allowed. NO OXYGENATED FUEL. NO MIXING OF ANY FUELS. NO ALCOHOL OR METHANOL. ANY OTHER FUEL WILL HAVE A WEIGHT PENALTY ADDED AT SERIES DESCRETION.

 

SUSPENSION:

1: LATE MODEL SUSPENSIONS ONLY. NO SPRING LOADED OR SHOCK TYPE 4 BAR RODS. ONLY

STANDARD SOLID BAR 4 BAR RODS. NO TORSION BAR FRONT OR REAR SUSPENSION. SWAY BAR 0K

2: ONE (1) COIL SPRING PER WHEEL. FLAT HELPER SPRING 0K. NO STACK SPRINGS ON ANY CORNER INCLUDING COIL. ONE PENSKE PYRAMID BLACK BUMP STOP ALLOWED ON RIGHT FRONT ONLY. BR 38 PART NUMBER. PART NUMBER MUST REMAIN IF YOU CUT. SO ALL CUTS MUST BE MADE FROM THE BOTTOM OF THE BUMP STOP.

3: WE WILL BE GOING BY THE DROOP RULE THAT THE SOUTHERN NATIONALS SERIES OF RAY COOK WILL BE USING. RULES AS FOLLOWS

IA.•15 INCH MAX HEIGHT AT TOP OF NOSE PIECE (RF CORNER)

2A: SOLID ADJUSTABLE DROOP LIMTERS PERMITTED MUST BE METAL CONSTRUCTION ONLY: CHAIN ONLY. AXIL BRACKET MUST BE SOLID WITH NO MOVING PARTS. BRACKET MUST BE ON TOP OF REAR END.

3A: PRE RACE TECH HEIGHT MUST BE BETWEEN 37" AND 39" (NO TOLERANCE) T-BAR MUST BE

STRAIGHT. DECK HEIGHT WILL AND CAN BE CHECKED ANYWHERE ACROSS THE BACK OF THE CAR.

4A: POST RACE TECH MUST BE NO HIGHER THAN 47" (1 INCH TOLERANCE) WILL MEASURE 6 INCHES FROM LEFT SIDE OF T-BAR.

5A: LEFT REAR TIRE WILL BE ADJUSTED TO 6 POUNDS OF AIR

6A: CAR WILL BE MEASURED WITH THE LEFT REAR JACKED up (BEHIND THE AXIL TUBE UNDER THE UNDER SWUNG) IN THE AIR UNTIL THE LEFT REAR WILL TURN FORWARD AND BACKWARD

7A: CAR MUST HAVE A FRAME (UNDERSWUNG) ON THE LR BETWEEN THE BELL OF THE REAR END

AND THE BIRDCAGE WITH A JACKPEG OR WEIGHT CLAMP BOLTED ON FOR THE JACK TO LIFT THE CAR 8A: CHAIN MUST BE TIGHT WHEN THE CAR IS JACKED UP FOR INSPECTION. MUST HAVE CHAIN.

9A- NO TYPE OF PADS WITH ANY GIVE ON TOP OF UNDERSWUNG BAR.

IOA-IF RUNNING CHAIN LIMITER ON RIGHT REAR MUST UNHOOK BEFORE CHECKING DROOP.

NOTE: IF T-BAR IS BENT INSPECTOR WILL USE A STRAIGHT EDGE ACROSS BACK OF CAR TO MAKE THE BEST CALL IF CAR DOES NOT HAVE UNDER SWUNG BAR TECH WILL USE BEST JUDGEMENT TO TECH.

 

SHOCKS:

1 : OIL SHOCKS (SPLIT VALVE PERMITTED) OR GAS SHOCKS PERMITTED. NON ADJUSTABLE/ NON CANISTER ONLY. NO AIR SHOCKS ALLOWED.

IA- NO EXOTIC BUILT SHOCKS- 6 INCH BODY MEANS 6 INCH SHAFT 7 INCH BODY MEANS 7 INCH SHAFT. NO INTERNAL BUMPS

1B- THE NEW AFCO CRATE SPEC SHOCK SERIES PACKAGE WILL BE ELIGIBLE WITH A 25 POUND WEIGHT BREAK TO ANYONE RUNNING THESE SHOCKS (THIS MEANS ALL SHOCKS ON THE CAR TO RECEIVE THE WEIGHT BREAK).

2: ONE SHOCK PER CORNER EXCEPT LEFT REAR. you MAY RUN A DRIVE SHOCK

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TRANSMISSION:

1: FIRST GEN STYLE BERT-BRINN-FALCON TRANSMISSIONS ALLOWED. ONE SHIFTER TRANSMISSIONS ARE ALLOWED WITH A 25 POUND WEIGHT PENALTY.

2: NO STRAIGHT DRIVES OR IN AND OUT BOXES.

3: IF RUNNING RAI I SPLINE TRANSMISSION CARBON FIBER DRIVESHAFT MANDATORY.

DRIVESHAFT:

1: CARBON FIBER ALLOWED AND RECOMMENDED FOR SAFETY.

 

REAR END:

1 : STANDARD QUICK CHANGE REAR END PERMITTED. NO TITANIUM OR EXOTIC MATERIALS AXILS, SPOOLS, GEARS, OR OTHER MATERIALS INSIDE REAR END-NO SMALL TIGER REAR ENDS.

BRAKE RULES:

1. STEEL BRAKE ROTORS ONLY. NO CARBON FIBER BRAKES. NO TITANIUM BRAKES OR OTHER EXOTIC MATERIAL BRAKE SYSTEMS

 

TIRES:

1: American Racer Pro 2 tires on the rear. Any spec tire on the front Hoosier or American Racer. Grooving and Siping allowed. 

2: NO CHEMICALS: TIRE PROTEST IS $135 PER TIRE AND WILL BE SENT TO A LAB FOR RESULTS. LAB

RESULTS ARE FINAL. ACCEPTANCE FEE IS $135 PER TIRE. WE WILL CUT TIRE WITH A GROOVING IRON BLADE AND TAKE TWO SAMPLES FROM EACH TIRE TO SEND OFF. IF TIRE SAMPLE COMES BACK WRONG YOU WILL LOOSE YOUR MONEY AND POINTS FROM THAT RACE AND YOUR ACCEPTANCE FEE MONEY. THERE WILL BE OTHER RACE PENALTIES TO BE DETERMINED BY SERIES.

3: WILL PUNCH TIRES AT ANYTIME ANY TIRE PUNCHING BELOW WHAT WE FIND TO BE A NORMAL PUNCH CAN BE SAMPLED AND SENT TO A LAB FOR FURTHER TESTING. MAY PUT A NUMBER PUNCH RULE IN BY FIRST OF THE YEAR.

4: MAY CUT CROSS BARS IN EXITING BLOCKS WITH A NUMBER 1 BLADE. NO SIPING.

 

WHEELS:

1: STANDARD 15X14 INCH WHEELS.

 

MIRRORS:

1: NO MIRRORS.

RADIOS;

1: NO RADIOS

 

BODY:

1: MUST FOLLOW FASTBACK BODY RULES

WEIGHT:AND WEIGHT BREAKS

1: BASE WEIGHT IS 2425

2: ON BOARD FIRE SYSTEM GET 25 POUND WEIGHT BREAK 3: 1 POUND PER LAP BURN OFF FOR FEATURE RACE ONLY 4: WE WILL WEIGHT BY THE SCALES AT EACH TRACK. (5 POUND TOLERANCE)

5: NO WEIGHT BREAKS FOR CONTAINMENT SEATS OR NECK RESTRAINTS ANYMORE

 

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