THOMPSON INTERNATIONAL SPEEDWAY
2013 & 2014 LATE MODEL PROPOSED
RULES
NO CARBON FIBER OR TITANIUM ENGINE, POWERTRAIN, CHASSIS OR
BODY PARTS ALLOWED.
BODY: (RECOMMENDED)ABC OVAL TRACK BODY PROGRAM WILL BE IN EFFECT. ALL
MEASUREMENTS WILL BE FROM ABC PROGRAM. FRONT FENDERS MUST BE NARROW TYPE FOR
8 TIRES. BODIES MAY BE STEEL, ALUMINUM, FIBERGLAS OR PLASTIC WITH RUBBER FRONT
& REAR BUMPER COVERS. ALL BODY PANELS MUST BE COMPLETE & UNALTERED.
APPROVED BODIES ARE; CHEVROLET IMPALA SS & MONTE CARLO, PONTIAC GRAND PRIX,
DODGE INTREPID, FORD FUSION & TAURUS. BODY/ENGINE MUST MATCH. NO
PERFORMANCE OR DOWN FORCE BODIES ALLOWED. BODIES MUST BE CENTERED ON THE FRAME.
HOOD MUST MEET WINDSHIELD WITH NO REAR OPENING. REAR BUMPER COVER/TAIL PANEL
MUST REMAIN UNCUT. NO BUMPER TUBING ABOVE BUMPER COVERS. NO BELLY PANS OR ANY
UNDER CAR AERODYNAMICS ALLOWED. ROCKER PANEL OR SIDE SKIRTS MAY NOT BE ROLLED
UNDER.
STOCK OEM, OLDER & NON ABC
BODIES ARE ALLOWED PROVIDED THERE IS NO PERFORMANCE ADVANTAGE. NO WIDE FRONT
FENDERS REGARDLESS OF BODY MANUFACTURER. NOSE PANEL MAY BE NARROWED MAXIMUM OF
4 FOR NON ABC BODIES. VARIATIONS FROM ABC PROGRAM MAY CARRY A WEIGHT
PENALTY.
MAXIMUM VENT
WINDOW:
10 MEASURED FROM THE BASE OF THE A PILLAR. VENT WINDOW MAY NOT BE TAPERRED
BACK, MUST GO STRAIGHT UP TO PILLAR.
REAR SPOILER: 5 HEIGHT BY 60
LENGTH. MUST BE MOUNTED (CENTERED) & FOLLOW
THE CONTOUR OF THE REAR PANEL. SPOILER CAN NOT EXCEED THE CONTOUR OF THE
BODY AT THE BASE. TOP EDGE OF THE SPOILER MAY ONLY ANGLE REARWARDS A MAXIMUM OF
½. BRACES MAY BE USED TO SUPPORT SPOILER FROM
BEHIND. NO BOXING, FORWARD MOUNTING BRACKETS OR VANES PERMITTED. SPOILER MUST BE CLEAR POLYCARBONATE MATERIAL. ONLY THE
BOTTOM 1 OF THE SPOILER MAY BE STEEL OR ALUMINUM. NO DECALS ON THE SPOILER. MAXIMUM HEIGHT FROM GROUND TO TOP OF SPOILER IS 38 FOR
NON-ABC BODIES.
GLASS:
FULL WINDSHIELD AND BACK GLASS. QUARTER
GLASS AND VENT WINDOWS ALLOWED, 1/8 MINIMUM CLEAR
POLYCARBONATE MATERIAL ONLY. IF
QUARTER/VENT GLASS IS NOT USED, WINDOW OPENING MUST REMAIN OPEN. WINDSHIELD MUST HAVE 2 INTERNAL BRACES 1 X 1/8 MATERIAL.
REAR GLASS MUST BE HELD SECURELY IN PLACE WITH A MINIMUM OF 2 EXTERNAL STRAPS.
REAR GLASS MUST ALSO BE BRACED INTERNALLY TO PREVENT ANY BOWING AT RACE SPEED. NO DECALS ON BACK GLASS.
BODY SPOILER: SIDE SKIRTS ALLOWED
BETWEEN WHEEL OPENINGS. MUST FOLLOW CONTOUR OF BODY AND MAY NOT BE STEPPED OR
ANGLED. SIDE SKIRTS MUST MAKE RIDE HEIGHT.
NERF BARS: MAY BE USED BETWEEN
WHEEL OPENINGS AT HUB HEIGHT. BARS MUST BE ROUND OR SQUARE TUBING, MAXIMUM 1 X
.125 SKIN TIGHT TO THE BODY WITH NO SHARP EDGES, ANGLES OR POINTS. NERF BAR
ENDS MUST BE TAPERED AND CAPPED. CARRIAGE TYPE BOLTS ONLY & MUST MOUNT
INWARD. POLYCARBONATE RUB RAILS ARE ALLOWED.
INTERIOR
SHEETMETAL: MUST COMPLETELY ENCLOSE
DRIVER FROM ENGINE COMPARTMENT, REAR FUEL CELL COMPARTMENT, TIRES
& TRACK SURFACE. THE AREA
DIRECTLY SUROUNDING THE DRIVER WHICH INCLUDES FRONT & REAR FIREWALLS, FOOT
BOX, FLOOR & LEFT SIDE OF TUNNEL MUST BE A MINIMUM OF .031 STEEL. ALL
OTHER PANELS MAY BE .040 ALUMINUM. MINIMUM 1/8 STEEL
PLATE REQUIRED UNDER DRIVERS SEAT. REAR
FIREWALL CANNOT BE FURTHER FORWARD THAN THE CENTERLINE OF THE MAIN HOOP BAR OF
THE ROLL CAGE. A FULL STOCK APPEARING
FLOOR MUST BE USED. RIGHT SIDE FLOOR MAY RUN LEVEL ACROSS FROM THE TUNNEL TO
THE RIGHT DOOR PANEL. MAXIMUM
TUNNEL HEIGHT OF 9.
FRAME/CHASSIS:
MUST BE A
PERIMETER CHASSIS, MINIMUM 2 X 3 TUBING SYMMETRICAL FROM CENTERLINE OF FRAME,
LEFT TO RIGHT. NO OFFSET OR STRAIGHT RAIL
FRAMES ALLOWED. THE MAIN FRAME RAILS (CENTER SECTION) SHALL HAVE A MINIMUM OF;
10 PERIMETER TUBING - .120 WALL
THICKNESS
12 PERIMETER TUBING - .095 WALL
THICKNESS
16 PERIMETER TUBING - .083 WALL
THICKNESS
FRONT & REAR CLIPS MAY BE
FABRICATED FROM 2 X 3 MINIMUM .083 WALL THICKNESS & MUST EXTEND MINIMUM
10 BEYOND WHEELBASE. FRONT & REAR CLI[PS MUST BE
CENTERED TO THE CENTER SECTION. REAR CLIP MUST EXTEND BEYOND FUEL CELL. FRONT
CLIP MUST BE A KICK-UP DESIGN. MAIN FRAME RAILS INCLUDING FRONT & REAR
CLIPS MAY NOT BE DRILLED OR ALTERED IN ANY WAY FOR THE PURPOSE OF REDUCING WEIGHT.
WHEELBASE: MINIMUM 104, MAXIMUM
108, MEASURED FROM THE CENTERLINE OF THE REAR AXLE TO THE CENTER OF THE LOWER
BALL JOINT.
OEM SNOUTS: MUST BE GM, FORD OR CHRYSLER. SNOUT MUST REMAIN STOCK OEM.
CROSSMEMBER MAY BE CUT FOR ENGINE CLEARENCE. CROSSMEMBER MAY NOT BE MOVED FROM
ORIGINAL LOCATION. LOWER A-FRAMES MUST MOUNT IN STOCK LOCATIONS. BOTH A-FRAMES
MUST BE OF EQUAL LENGTH. A MINIMUM DISTANCE OF 24 MUST BE MAINTAINED FROM THE
LEADING EDGE OF THE CENTER SECTION TO THE CENTER OF LOWER BALL JOINT.
ROLL CAGE: (PER NASCAR DESIGN) ALL REQUIRED ROLLCAGE
TUBING MUST BE 1 Ύ X .090 HREW OR DOM TUBING. ANY ADDITIONAL TUBING MAY BE
MINIMUM 1 ½ X .083 TUBING. THE FOLLOWING ARE
ADDITIONAL REQUIREMENTS AND CLARIFICATIONS FOR THE INSTALLATION OF THE ROLL BARS.
ROLLCAGE MUST BE SYMETRICAL IN ALL DIRECTIONS. THE MAIN ROLL BAR REFERRED TO AS #1 MUST BE MOUNTED
VERTICAL (90 DEGREES) ON THE CENTER SECTION OF THE FRAME WITH NO OFFSET.
THIS BAR MUST BE CENTERED TO THE CHASSIS. THE CENTER OF THE TOP OF THIS
BAR MUST BE NO LOWER THAN 36 ½ FROM THE TOP OF THE FRAME RAIL. MINIMUM LENGTH OF DOOR BARS IS 42. THE ROOF BAR
REFERRED TO AS #3 MUST BE WITHIN 4 OF THE SIDE WINDOW AND/OR DOOR
OPENINGS ON BOTH SIDES, AS WELL AS THE FRONT WINDSHIELD, WITH NO
OFFSETS.
POSITIVELY NO
OFFSET ROLL CAGES!
FUEL CELL CRASH BAR: A RE-ENFORCEMENT
BAR, MINIMUM 1 ½ X .083, MUST EXTEND BELOW THE REAR FRAME SECTION BEHIND THE
FUEL CELL. THIS REINFORCEMNT BAR MUST BE AS WIDE AS THE REAR FRAME RAILS AND
EXTEND AS LOW AS THE BOTTOM OF THE FUEL CELL WITH TWO (2) VERTICAL UPRIGHTS
EVENLY SPACED BETWEEN THE FRAME RAILS AND ATTACHED TO THE REAR CROSS MEMBER.
TWO (2) SUPPORT BARS, ONE (1) LOCATED ON EACH CORNER, MUST ANGLE UPWARDS AND BE
WELDED TO THE REAR FRAME RAILS.
FUEL CELL HEIGHT: 8 MINIMUM.
BALLAST WEIGHT: ALL BALLAST WEIGHT
MOUNTED TO THE OUTSIDE OF THE FRAME MAY NOT EXCEED 3 FROM THE FRAME. MUST BE
IN SOLID BLOCK FORM OF NO LESS THAN 5 LBS BLOCKS. ALL WEIGHTS MUST BE SECURELY
ATTACHED TO THE CAR WITH A MINIMUM OF TWO (2) 7/16 BOLTS. BALLAST WEIGHT IS
NOT ALLOWED IN THE DRIVERS COMPARTMENT. ALL WEIGHT MUST BE PAINTED WHITE AND
CLEARLY MARKED (LM-CAR#). ANY CAR
LOOSING BALLAST WEIGHT OR FOUND WITH UNMARKED WEIGHT IS SUBJECT TO A FINE.
GROUND CLEARANCE: 4
CAR WEIGHT: TUBE CHASSIS MINIMUM
2975 LBS., G-METRIC, FORD STOCK CHASSIS MINIMUM 2925 LBS., STOCK SNOUTS MINIMUM
2950 LBS., MAXIMUM LEFT SIDE PERCENTAGE 56.0%. MOPARS MUST ADD 11 POUNDS PER
CUBIC INCH OVER 359. STOCK CRATE MOTOR 2950 LBS., CRATE MOTOR WITH OVER BORE MINIMUM 2975 LBS. MAXIMUM LEFT SIDE PERCENTAGE 56.0%.
SUSPENSION:
GENERAL
SUSPENSION: NO SUSPENSION TRAVEL LIMITING DEVICES ALLOWED. EXAMPLES ARE
BUT NOT LIMITED TO; BUMP STOPS, COIL BINDING, SHOCK LOCATIONS, TRAVEL ADJUSTER,
CHAINS, CABLES ETC.
.
A-FRAMES: ANY STOCK OR
AFTERMARKET UPPER & LOWER CONTROL ARMS ALLOWED. LOWER CONTROL ARMS MUST BE
THE SAME LENGTH LEFT TO RIGHT, MEASURED FROM CENTER OF MOUNTING POINT TO CENTER
OF BALL JOINT. HEIM JOINTS ALLOWED.
SPINDLE &
HUBS: OEM OR AFTERMARKET STEEL SPINDLES. SPINDLE OFFSET/INCLINATION
MUST MATCH LEFT TO RIGHT. ANY STEEL, ALUMINUM OR MAGNESIUM SAFETY OR RACING HUB
ALLOWED. LEFT & RIGHT HUBS MUST HAVE THE SAME OFFSET/DIMENSIONS. OIL FILLED
HUBS ARE NOT ALLOWED.
BEARINGS: ALL WHEEL BEARINGS
(FRONT & REAR), DIFFERENTIAL & TRANSMISSION BEARINGS MUST BE OF
STOCK OEM DESIGN, EITHER ANGLE TYPE CONE, STRAIGHT BARREL TYPE OR BALL BEARING.
ALL BEARINGS INCLUDING THE ROLLERS MUST BE MAGNETIC STEEL ONLY.
BRAKES: MUST BE OPERATIONAL
ON ALL 4 WHEELS AT ALL TIMES. VALVES OF ANY TYPE WILL NOT BE PERMITTED IN THE
BRAKE LINES THAT WILL REDUCE OR STOP THE FLOW OF BRAKE FLUID TO A SINGLE
WHEEL. SINGLE PISTON CALIPERS.
STEEL FRONT ROTORS MINIMUM 1 THICKNESS. STEEL REAR ROTORS MINIMUM Ύ THICKNESS. AFTERMARKET MASTER
CYLINDERS AND PEDALS ALLOWED.
ADJUSTABLE PROPORTIONING VALVE MAY BE USED FROM DRIVERS COMPARTMENT FOR
FRONT TO REAR ADJUSTMENT ONLY. NO DRILLING OR LIGHTENING OF ROTORS OR CALIPERS. BRAKE DUCTS &
BRAKE RETURN LINES ARE ALLOWED. BRAKE COOLERS AND BRAKE BLOWERS ARE NOT
PERMITTED.
BRAKE LINES: STEEL ONLY.
STEERING: STEERING BOX OR RACK & PINION ALLOWED. HEIM JOINTS MAY BE USED AT THE INNER & OUTER TIE ROD
ENDS. CENTER LINK MUST BE STEEL. STEERING SHAFT MUST BE MAGNETIC STEEL &
MUST USE A MINIMUM OF 2 U-JOINTS. A QUICK RELEASE MUST BE USED ON THE STEERING
WHEEL. CENTER OF STEERING WHEEL MUST BE PADDED. POWER STEERING MUST BE BELT
DRIVEN OFF THE FRONT OF THE ENGINE.
SPRINGS: MAGNETIC
STEEL ONLY. BIG SPRING FRONT MINIMUM 5 DIAMETER, REAR MINIMUM 4 Ύ DIAMETER.
COIL-OVERS ALLOWED. COIL-OVER PARTS MUST BE THE SAME LEFT TO RIGHT & FRONT
TO REAR. SPRING RUBBERS ALLOWED.
SHOCKS: ONE (1) STEEL SMOOTH BODIED SHOCK PER WHEEL. SHOCK MAY HAVE A SCHRADER VALVE & MAY BE REBOUND ADJUSTABLE. SHOCKS MAY NOT EXCEED RACERS NET PRICE OF $175.00 PER SHOCK. SHOCK MAY NOT BE PAINTED OR ALTERED IN ANYWAY. PART NUMBER MUST BE CLEARLY VISIBLE OR SHOCK IS ILLEGAL.
SHOCK CLAIMER RULE: TOP FIVE CARS IN TECH ONLY.
YOU MAY CLAIM THE SHOCKS ON THE CAR THAT FINISHED DIRECTLY IN FRONT OF
YOU. CLAIMER FEE IS $200.00 PER
SHOCK. SHOCKS MAY BE CLAIMED AS ALL 4 OR
IN PAIRS, EITHER FRONT OR REAR.
SWAYBAR: ONE SOLID STEEL SIDE TO
SIDE ONLY. MUST MOUNT TO UNDERSIDE OF
FRONT CLIP & BE ATTACHED TO LOWER CONTROL ARMS ONLY. NO REAR SWAYBARS.
REAR SUSPENSION: STEEL TRUCK ARM OR
THREE POINT REAR MOUNTING ALLOWED. REAR LOWER TRAILING ARMS MAY USE RUBBER
BUSHINGS AND/OR HEIM JOINTS. RUBBER SNUBBER/COMPRESSION BUSHING IS ALLOWED.
SPRING ROD OR SHOCKS ARE NOT ALLOWED ON LOWER TRAILING ARMS. ONE (1) UPPER LINK WITH
PIVOTS. UPPER LINK MAY HAVE ONE BUSHING. NO SPRING OR SHOCKS ALLOWED IN
UPPER LINK.
PANHARD BAR: SOLID TUBULAR PANHARD
BAR. ONE BAR WITH 2 ADJUSTABLE HEIM JOINTS.
WHEELS: 15 X 8 STEEL. WIDE FIVE WHEELS MINIMUM WEIGHT IS 15 LBS. 5
X 5 WHEELS MINIMUM WEIGHT IS 18 LBS. WHEEL SPACERS ARE ALLOWED, MUST BE 1 PIECE & ½ THICK MAXIMUM PER WHEEL. MAGNETIC
STEEL WHEELS, STUDS & LUG NUTS.
TREADWIDTH: MAXIMUM FRONT &
REAR 76.
TIRES: TRACK TIRE RULE WILL
BE IN EFFECT-ALSO SEE GENERAL RULES. AMERICAN RACER 8 SLICK.
LEFT SIDE TIRE IS EC-84, 26.5/8.0 X 15S OR 27.0/8.0 X 15. RIGHT SIDE TIRE IS
EC-85, 27.0/8.0 X 15. TIRES MUST BE PURCHASED THROUGH TRACK VENDOR. THE USE OF
TIRE SOFTNER/CHEMICALS OF ANY TYPE IS NOT ALLOWED. NO LUBRICANTS OR DRESSINGS
OF ANY TYPE MAY BE APPLIED TO THE SIDEWALLS OF THE TIRES.
TIRE INVENTORY PROGRAM:
THE TIRE INVENTORY WILL BE IN
EFFECT THROUGHOUT THE POINTS SEASON STARTING AT THE ICEBREAKER EVENT AND ENDING
ON THE FINAL THURSDAY NIGHT THUNDER EVENT.
1) TIRE BANK:
EACH DRIVER
WILL HAVE A TIRE BANK CONSISTING OF ALL TIRES PURCHASED FOR THEIR INVENTORY
THROUGHOUT THE SEASON. THE TIRE BANK WILL HAVE NO MAXIMUM LIMIT, HOWEVER
DRIVERS WILL BE LIMITED ON THE NUMBER OF TIRES THEY CAN ADD IN ON A WEEKLY
BASIS. ONCE A TIRE IS PLACED INTO A DRIVERS INVENTORY IT IS PERMANENTLY IN
THEIR INVENTORY. TIRES ARE ALWAYS RECORDED TO THE REGISTERED DRIVER, NOT THE
CAR!
2) NEW TIRE SCHEDULE:
A)
STARTING AT THE ICEBREAKER, DRIVERS WILL BE ELIGIBLE TO PURCHASE UP TO TEN (10)
TIRES FOR ICEBREAKER WEEKEND AND THE FIRST THURSDAY NIGHT THOMPSON THUNDER OF
THE SEASON. DIVISIONS RUNNING TWO FEATURES AT ICEBREAKER WILL NOT RECEIVE ANY
ADDITIONAL TIRES. DRIVERS MUST START AND FINISH BOTH ICEBREAKER AND THE FIRST
TNTT ON THEIR 10 INVENTORY TIRES. ALL PIT ROAD SPARE TIRES MUST BE FROM YOUR 10
INVENTORY TIRES. PRACTICE TIRES DO NOT HAVE TO BE FROM INVENTORY.
B) ON
THE SECOND "THURSDAY NIGHT THUNDER" AND CONTINUING THROUGHOUT THE
SEASON, DRIVERS WILL BE ELIGIBLE TO PURCHASE TWO (2) NEW TIRES TO ADD TO THEIR
INVENTORY EACH WEEK. DRIVERS MUST START AND FINISH BOTH THE HEAT AND FEATURE ON
INVENTORY TIRES. IN THE EVENT OF A PUNCTURE ALL SPARE TIRES MUST BE FROM WITHIN
THE DRIVERS INVENTORY
3) RECORDING PROCEDURE:
DRIVERS
ARE RESPONSIBLE TO BRING ALL NEW INVENTORY TIRES TO THE SCALES/TECH AREA FOR
PROPER RECORDING AND STENCILING. SCALES/TECH AREA IS LOCATED NEXT TO THE TIRE
& FUEL STATIONS. ALL NEW INVENTORY TIRES MUST BE NEW STICKER TIRES AND
RECORDED INTO INVENTORY PRIOR TO BEING USED/PRACTICED. SCUFFS OR USED TIRES
WILL BE REJECTED! IT IS THE RESPONSIBILITY OF THE DRIVER/OWNER TO MAKE SURE THE
TIRES ARE BROUGHT TO THE INVENTORY STATION FOR RECORDING PRIOR TO THE START OF
THE DRIVERS MEETING.
4) SPECIAL EVENTS:
ADDITIONAL
TIRE PURCHASES MAY BE ADJUSTED FOR EXTRA DISTANCE RACES INCLUDING DOUBLE
FEATURES BY RACE OFFICIALS. COMPETITORS WILL BE ADVISED OF ANY CHANGES.
5) NEW TIRE ELIGIBILITY:
DRIVERS
MUST START THE FEATURE TO BE ELIGIBLE TO PURCHASE TIRES FOR THE FOLLOWING EVENT
ENTERED. IF A DRIVER ELECTS NOT TO PURCHASE TIRES, THEY WILL FORFEIT TIRES FOR
THAT WEEK AND WILL NOT BE ABLE TO PURCHASE MORE THAN THE WEEKLY LIMIT THE
FOLLOWING WEEK. NEW TIRES PURCHASED DO NOT HAVE TO BE USED THE SAME WEEK THEY
ARE PURCHASED. HOWEVER THEY MUST STILL BE INVENTORIED TO BE INCLUDED IN YOUR
BANK. ANY TEAM / DRIVER THAT BEGINS RACING AFTER THE ICEBREAKER, WILL ONLY BE
ELIGIBLE TO PURCHASE SIX (6) TIRES THEIR FIRST WEEK AND TWO (2) TIRES EACH WEEK
AFTER.
6) RUNNING INVENTORY TIRES / PENALTIES:
DRIVERS
ARE RESPONSIBLE TO HAVE INVENTORY TIRES ON THEIR CAR AT ALL TIMES DURING HEAT
AND FEATURE EVENTS. PRACTICE TIRES DO NOT HAVE TO BE FROM WITHIN YOUR
INVENTORY. TIRE SERIAL NUMBERS MUST MATCH WHAT WAS RECORDED FOR THAT DRIVER.
ANY DRIVER CAUGHT WITH TIRES NOT FOUND IN THEIR INVENTORY OR TIRES THAT HAVE
BEEN TAMPERED WITH/DAMAGED IN ANY WAY INCLUDING UN-READABLE AND NON-TRACEABLE
TIRES WILL BE DEEMED ILLEGAL. THIS MAY RESULT IN DISQUALIFICATION FROM THE RACE
EVENT (INCLUDES HEAT RACES AND FEATURE EVENTS). IN ADDITION THE DRIVER MAY BE
INELIGIBLE TO ADD ANY TIRES TO HIS INVENTORY FOR THE FOLLOWING INVENTORY EVENT.
ALL ILLEGAL OR UN READABLE TIRES WILL BE CONFISCATED.
7) CUT, DAMAGED, MISSING, TAKE-OFF TIRES:
DRIVERS
WITH CUT, DAMAGED, MISSING OR LOW TIRE COUNTS WILL BE GIVEN A CREDIT OPTION.
EACH REGISTERED DRIVER WILL RECEIVE TWO (2) INVENTORY CREDITS FOR THE ALLOWED
PURCHASE OF TWO (2) NEW TIRES FOR ANY REASON THROUGHOUT THE POINTS SEASON.
CREDITS ARE REDEEMABLE AT ANY POINTS EVENT AFTER ICEBREAKER. THESE CREDITED TIRES
MUST BE INVENTORIED PRIOR TO THE DRIVERS MEETING. ONCE THE TWO CREDITS HAVE
BEEN USED, IT WILL BE THE DRIVERS RESPONSIBILITY TO USE TIRES WITHIN THEIR
INVENTORY AS REPLACEMENTS FOR CUT, DAMAGED, MISSING, OR REPLACEMENT TIRES.
CREDIT TIRES CAN NOT BE TRANSFERRED TO OTHER TEAMS. ONLY NEW TIRES ADDED THE
SAME DAY MAY BE REPLACED PRIOR TO THE HEATS DUE TO A CUT/PUNCTURE PER TECH
OFFICIAL APPROVAL.
DRIVERS
MAY ELECT TO GIVE ONCE REGISTERED TIRES TO OTHER TEAMS. HOWEVER THE RECEIVING
TEAM MAY NOT BE IN THE TOP 10 IN POINTS. THE TIRES MUST BE USED AND MAY NOT BE
NEW OR SCUFFED CONDITION. TIRES CAN ONLY BE TRANSFERRED ONCE AND REQUIRE PROPER
NOTIFICATION FROM BOTH TEAMS TO THE TIRE OFFICIAL FOR APPROVAL PRIOR TO BEING
TRANSFERRED.
ENGINE:
GENERAL SPECS: MUST BE STOCK OEM V8 PRODUCTION CAST IRON BLOCKS AND
CYLINDER HEADS. GM MAY USE THE DART SHP BLOCK. THE BLOCK MUST RETAIN ALL OEM
SPECS WITH THE EXCEPTION OF CYLINDER OVERBORE AND SURFACING OF THE BLOCK. ANGLE
CUTTING OF THE BLOCK DECK WILL NOT BE PERMITTED. ORIGINAL BORE & STROKE
MUST BE MAINTAINED. CYLINDERS MAY BE BORED A MAXIMUM OF .040 FROM STANDARD
SIZE. BLOCK MAY NOT HAVE MORE THAN 2 CYLINDER SLEEVES INSTALLED & MUST BE
OF CAST IRON MATERIAL. AFTERMARKET OEM TYPE MAGNETIC STEEL MAIN BEARING CAPS
ALLOWED. MUST BE STOCK APPEARING. STOCK
OEM TYPE ENGINE BEARINGS ONLY. NO ROLLER CAM BEARINGS. NO DEBURRING,
GRINDING, CHEMICAL (ACID MILLING), OR ABRASSIVE CLEANING OF ANY ENGINE PARTS.
NO COATING (EX. TEFLON), PLATING (EX. CHROMING), OR PAINTING OF ANY INTERNAL
ENGINE PARTS. OIL RETURN HOLES MAY BE DEBURRED AND/OR COVERED WITH SCREENS. OIL
MUST BE PRESSURIZED & DRAIN NORMALLY THROUGH THE BLOCK. EPOXYING MAGNETS TO
THE OIL RETURN AREA IS ALLOWED. NO CARBON FIBER ENGINE PARTS. NO PUMPS OF ANY
TYPE ALLOWED IN THE EVACUATION SYSTEM. THE ONLY APPROVED ENGINES ARE;
CHEVROLET-350, CHRYSLER-340 OR 360, FORD-351C OR 351W.
COMPRESSION: MAXIMUM COMPRESSION
IS 10.5:1, CHECKED WITH THE WHISTLER. NO TOLERANCE ALLOWED ON MAXIMUM
COMPRESSION! THE 2 MOST FORWARD BOLTS ON EACH SIDE OF THE INTAKE MUST BE
DRILLED TO ACCEPT A SEAL.
LOCATION: GENERAL MOTORS; THE
CENTER OF THE FORWARD MOST SPARK PLUG MUST BE EVEN WITH OR FORWARD OF THE
CENTERLINE OF THE UPPER BALL JOINTS. FORD AND CHRYSLER; THE RIGHT CYLINDER HEAD
MUST BE EVEN OR FORWARD OF THE CENTERLINE OF THE UPPER BALL JOINTS. ENGINE MUST
BE CENTERED IN THE CHASSIS. FORD CRATE MOTORS
THAT ARE SET BACK TO FRONT OF CYLINDER HEAD MUST ADD 10 LBS TO EACH FRAME
RAIL-LOCATED FORWARD OF UPPER BALL JOINT.
ENGINE MUST BE LEVEL AS MEASURED FROM SIDE TO SIDE AND FRONT TO BACK WITHIN ½.
MINIMUM CRANKSHAFT HEIGHT IS 11 MEASURED FROM THE CENTERLINE OF THE CRANKSHAFT
TO THE GROUND.
CRANKSHAFT: STEEL PRODUCTION
DESIGN ONLY. AFTERMARKET CRANKSHAFTS ALLOWED, BUT MUST BE SIMILAR IN APPEARANCE
AND CONSTRUCTION TO OEM CRANKSHAFT. MAXIMUM CRANKSHAFT STROKE IS CHEVROLET
3.500, FORD 3.515, CHRYSLER 3.500. MAIN JOURNALS
MAY NOT BE DRILLED. COUNTER WEIGHTS CAN NOT BE KNIFE EDGED, POLISHED OR
UNDERCUT. MINIMUM CRANKSHAFT WEIGHT IS 46 LBS.
OIL PAN: ONLY OEM TYPE IN
THE PAN OIL PUMPS ALLOWED. FORD MAY USE A SINGLE STAGE, BELT DRIVEN EXTERNAL
OIL PUMP. EXTERNAL PUMP MUST SCAVANGE FROM THE WET SUMP OIL PAN. PRESSURIZED
OIL MUST FLOW & DRAIN NORMALLY THROUGH THE ENGINE, NO ADDITIONAL PRESSURE
OR RETURN OIL LINES EXCEPT TO OIL COOLER IF USED. EXTERNAL OIL COOLERS ARE ALLOWED.
ENGINE OIL
SPECIFICATIONS: THE USE OF COMBUSTION ENHANCING OILS OR ADDITIVES IS NOT
PERMITTED.
PISTONS &
RODS:
FLAT TOP 3RING ALUMINUM PISTONS ONLY. ALL 3 RINGS MUST BE OF MAGNETIC STEEL.
VALVE RELIEF MAY BE CUT INTO THE PISTON. NO PART OF THE PISTON MAY PROTRUDE
ABOVE THE TOP OF THE BLOCK. ANY STEEL PISTON RINGS ALLOWED. STOCK
TYPE STEEL RODS ONLY. ALL AFTERMARKET RODS MUST BE SOLID BEAM TYPE
SPORTSMAN ROD. NO HOLLOW BEAM RODS. NO BILLET RODS. MINIMUM ROD LENGTH
5.700, MAXIMUM ROD LENGTH 6.250. ALL RODS MUST BE THE SAME LENGTH. MINIMUM
WEIGHT FOR PISTON, PIN, RINGS, BEARING & ROD
ASSEMBLY IS 1075 GRAMS.
PISTON RINGS: MINIMUM THICKNESS OF
TOP & SECOND RINGS .043. MINIMUM THICKMESS OF OIL RINGS 3mm.
CAMSHAFT: NO ROLLER OR
MUSHROOM CAMSHAFTS. NO GEAR OR BELT DRIVEN CAMSHAFTS. ANY TIMING CHAIN MAY BE
USED.
VALVE LIFTERS: STOCK LIFTER
DIAMETER MUST BE MAINTAINED. NO ROLLER, MUSHROOM, OVERSIZE, CONVEX, CONCAVE OR
CERAMIC LIFTERS. ONLY FLAT BOTTOM, MAGNETIC STEEL STRAIGHT BARREL LIFTERS OF
THE SAME DIAMETER AND LENGTH AS STOCK. ANY TYPE OF MECHANICAL ASSISTANCE
EXERTING A FORCE TO ASSIST IN CLOSING OF THE LIFTER AND/OR PUSHROD (REV KITS) ARE NOT ALLOWED. GM FLAT TAPPET LIFTER .842
X 1.88. FORD FLAT TAPPET LIFTER
.875 X 1.95. CHRYSLER FLAT TAPPET LIFTER .904 X 1.79.
ROCKER ARMS: ROLLER ROCKER ARMS
ARE PERMITTED. ROCKERS MUST BE INDEPENDENT AND STUD TYPE. NO SHAFT ROCKERS.
STUD GIRDLES PERMITTED. CHRYSLER MAY USE OEM SHAFT SYSTEM. AFTERMARKET SHAFT
ROCKERS ALLOWED ONLY WITH CHRYSLER CYLINDER HEAD PART/CASTING# P5007141.
CYLINDER HEADS: STOCK OEM CAST IRON
PRODUCTION HEADS ONLY, LIMITED TO 2 VALVES PER CYLINDER. CHEVROLET MUST USE STRAIGHT PLUG HEADS WITH A
2.020 OR SMALLER INTAKE VALVE, EXHAUST VALVE MAXIMUM SIZE IS 1.60. NO BOWTIE
OR VORTEC HEADS ALLOWED. CHEVROLET MAY USE DART IRON EAGLE S/S CYLINDER HEAD
PART# 10024266. CHRYSLER MUST USE A CYLINDER HEAD WITH A 2.02 OR SMALLER
INTAKE VALVE AND A 1.60 MAXIMUM EXHAUST VALVE. THE FOLLOWING PART NUMBERS ARE
THE ONLY CHRYSLER HEADS ALLOWED; PART # P5249574 CASTING # 4772576 OR 448308,
PART# P5007086 CASTING # 53021137 OR 53006673 & PART# P5007141. NO W-2
HEADS ALLOWED. FORD WINDSOR MUST USE HEADS WITH A 1.94 OR SMALLER INTAKE
VALVE, EXHAUST VALVE MAXIMUM SIZE 1.60.
FORD WINDSOR MAY USE THE CAST IRON WORLD PRODUCTS WINDSOR JR CYLINDER
HEAD. BARE CASTING PART# 05303B WITH 1.94 INTAKE VALVE AND 1.60 EXHAUST
VALVE. THIS IS THE ONLY APPROVED AFTERMARKET CYLINDER HEAD! FORD CLEVELAND MUST USE HEADS OF 2 BARREL
DESIGN WITH 2.050 OR SMALLER INTAKE VALVE, MAXIMUM EXHAUST VALVE IS 1.660.
FORD MOTORSPORTS N351 OR N352 CYLINDER HEADS ARE ALLOWED. NO PORT MATCHING OR
FLOW WORK. NO GRINDING, POLISHING, BEADING OR CHEMICAL (ACID) MILLING ALLOWED.
ALL CAST LINES & INSIGNIAS MUST BE CLEARLY VISIBLE & COMPLETE. BOLT
HOLES MAY NOT BE RELOCATED.
VALVES: MUST BE STOCK OR
DIRECT REPLACEMENT. STAINLESS STEEL ALLOWED. OVERSIZE STEMS ALLOWED. NO PART OF
THE VALVE STEM MAY BE SMALLER THAN STOCK, EXCEPT FOR THE KEEPER GROOVES. NO PR
FLO, TULIP, ULTRA LITE OR TITANIUM VALVES. VALVES MAY BE COATED OR PLATED (EX.
TEFLON). HOLLOW VALVE STEMS ARE NOT ALLOWED. MINIMUM VALVE WEIGHTS ARE: INTAKE;
116 GRAMS, EXHAUST; 100 GRAMS.
VALVE SPRINGS: MAXIMUM OUTSIDE
DIAMETER OF 1.55. MAXIMUM INSTALLED HEIGHT OF 1.90. NO TITANIUM OR ALUMINUM
RETAINERS.
VALVE JOB: MULTI ANGLE VALVE
JOBS ARE PERMITTED. WHEN CUTTING THE VALVE SEAT ANGLES, NO STONE OR GRINDING
MARKS ARE PERMITTED ABOVE THE BOTTOM OF THE VALVE GUIDE. ALL CUTTING IN
REFERENCE TO THE VALVE JOB AND BOWL AREA MUST BE CENTERED OFF THE CENTERLINE OF
THE VALVE GUIDE. ON THE BOWL SIDE OF THE INTAKE AND EXHAUST SEATS, THE MAXIMUM
ANGLE OF CUTTING AND/OR GRINDING WILL BE 90 DEGREES. UPON COMPLETION OF THE
VALVE JOB, THE BOWL AREA UNDER THE VALVE SEAT DOWN TO THE VALVE GUIDE MUST
STILL BE THE SAME CONFIGURATION AS FAR AS SHAPE AND FINISH AS IT WAS FROM THE
MANUFACTURER. SURFACE AND/OR EDGES WHERE THE CUTTER OR STONE HAS TOUCHED MUST
NOT BE POLISHED. HAND GRINDING OR POLISHING WILL NOT BE PERMITTED ON ANY PART
OF THE HEAD. NO WORK ALLOWED IN THE COMBUSTION CHAMBER, IT MUST REMAIN AS CAST
FROM THE MANUFACTURER.
INTAKE
MANIFOLD: EDELBROCK PERFORMER & RPM SERIES ARE THE ONLY INTAKES
ALLOWED. THE INTAKE MUST REMAIN AS MANUFACTURED STOCK OUT OF THE BOX.
MANIFOLDS MUST REMAIN UNALTERED, INCLUDING BOLT HOLES. PAINTING OR COATING OF
THE INTAKE IS NOT ALLOWED. ONLY CURRENT DESIGNED INTAKES ALLOWED. OLDER INTAKES
WITH CURRENT PART NUMBERS ARE NOT ALLOWED. APPROVED PART NUMBERS ARE; CHEVROLET
2101,7101, FORD 2181, 2665, 2750, 7181, CHRYSLER 7176.
CHRYLER MUST USE INTAKE PART# P5007381 CASTING# P4510018 WITH CYLINDER HEAD
PART # P5007086 OR P5007141. A TRACK SUPPLIED INTAKE MUST FIT YOUR ENGINE.
CARB SPACER: ONE SOLID MATERIAL
SPACER, MAXIMUM HEIGHT OF 1 PERMITTED. NO WEDGE SHAPE SPACERS ALLOWED. BOTH
THE TOP AND BOTTOM SURFACES MUST BE PARALLEL. PORTHOLE (S) MUST BE VERTICAL TO
THE TOP AND BOTTOM. NO BEVELING, TAPERING, FLARING OR RADIUSING OF PORTHOLE
(S). SPACER MAY NOT BE STEPPED OR UNDERCUT. NO ADDITIONAL OPENINGS FOR THE
INDUCTION OF AIR ALLOWED. ONLY ONE .075 MAX GASKET PER SIDE OF SPACER ALLOWED.
CRATE MOTOR MUST USE MOROSO PART# 64930 SPACER.
CARBURETOR: THE HOLLEY R4412 IS
THE ONLY CARBURETOR ALLOWED. THE CARBURETOR MUST BE STOCK OUT OF THE BOX. ALL
CARBURETORS MUST PASS TRACK SUPPLIED GAUGES. THE ONLY CHANGES THAT WILL BE
ALLOWED ARE AS FOLLOWS; THE CHOKE PLATE AND SHAFT MAY BE REMOVED, JETS, POWER
VALVE, ACCELERATOR PUMP CAM AND ACCELERATOR PUMP DISCHARGE NOZZLES MAY BE
CHANGED. IDLE HOLES MAY BE DRILLED IN THROTTLE PLATES. THROTTLE PLATE SCREWS
MAY BE TRIMMED FLUSH WITH SHAFT. NO OTHER CHANGES ALLOWED.NO RESHAPING,
POLISHING, GRINDING, MACHINING OR DRILLING ALLOWED. NO ADJUSTABLE (JETTED) AIR
BLEEDS OR CIRCUITS. METERING BLOCKS MUST REMAIN UNALTERED. GASKET MUST REMAIN
UNALTERED. NO HP PARTS ALLOWED.
CRATE MOTOR MUST USE HOLLEY 600 4 BBL CARBUERATOR, PART#
0-80540-1, MUST REMAIN AS PURCHASED THROUGH HOLLEY (INCLUDED IN ENGINE
PACKAGE). THE ONLY ITEMS THAT ARE ALLOWED TO BE CHANGED ARE THE JETS, POWER
VALVE AND ACCELORATOR PUMP CAM. ABSOLUTELY NO OTHER CHANGES OR
MODIFICATIONS ALLOWED! A TRACK SUPPLIED STOCK HOLLEY CARBURETOR MUST MATCH YOUR
CARBURETOR EXACTLY, INCLUDING FINISH.
AIRCLEANER/FILTER: ONLY A ROUND DRY
PAPER MAXIMUM 4 AIR FILTER ELEMENT ALLOWED. AIR FILTER MAY NOT BE SPRAYED OR
SOAKED WITH CHEMICALS. AIR CLEANER TOP AND BOTTOM MUST BE METAL.
AIR BOX ALLOWED. ALL AIR CLEANERS ARE SUBJECT TO TRACK APPROVAL. ALL AIR
ENTERING THE CARBURETOR MUST PASS THRU THE FILTER ELEMENT. AIR CLEANERS MUST
REMAIN UNDER THE HOOD.
EXHAUST/HEADERS: ONLY COMMERCIALLY MANUFACTURED MILD STEEL HEADERS. STAINLESS
STEEL HEADERS ARE NOT PERMITTED. 180 DEGREE, TRI-Y, MERGE & MULTI MERGE
HEADERS ARE NOT PERMITTED. ALL FOUR TUBES FROM LEFT & RIGHT BANKS MUST
ENTER SINGLE COLLECTOR FOR RESPECTIVE SIDE OF EXHAUST. HEADER FLANGE MUST BOLT
DIRCTLY TO CYLINDER HEAD WITHOUT ANY SPACERS. MAXIMUM HEADER FLANGE THICKNESS
IS ½. EXHAUST MUST EXTEND BEYOND THE DRIVERS SEAT, REMAIN UNDER CAR & HAVE
A TURN DOWN TOWARDS THE TRACK SURFACE. 3 ½ MAXIMUM DIAMETER EXHAUST PIPES. 2
INTO 1 SYSTEMS ALLOWED. MUFFLERS ARE MANDATORY.
MUFFLER MUST MEET 96 Db READINGS. OPEN TYPE MUFFLERS MUST HAVE A MINIMUM 12
MAIN BODY. MUFFLERS MUST BE REMOVABLE FOR
INSPECTION. MUFFLER MUST REMAIN COMPLETE WITH ENDS AS PURCHASED. CHECK VALVE
TUBES NOT ALLOWED IN ANY PART OF THE MUFFLER. NO LEAKS IN MUFFLER OR EXHAUST
SYSTEM. HEAT COATINGS ARE PERMITTED. 3 OF THERMAL WRAP MAY BE USED TO PROTECT THE SPARK PLUG WIRES.
THERMAL WRAP IS NOT ALLOWED ANYWHERE ELSE ON THE HEADERS OR EXHAUST.
IGNITION: ELECTRONIC
DISTRIBUTORS MUST BE GEAR DRIVEN, USE AN EIGHT LOBE CAM WITH MAGNETIC PICK-UP,
STOCK TYPE HOUSING, MOUNTED IN STOCK LOCATION, USING FACTORY PRODUCTION FIRING
ORDER ONLY. GM & CHRYSLER MUST USE 1-8-4-3-6-5-7-2 & FORD MUST USE
1-3-7-2-6-5-4-8. THE FOLLOWING SYSTEMS ARE
PERMITTED;
HEI COIL IN THE CAP TYPE DISTRIBUTOR WITH
A GM OEM TYPE IGNITION MODULE. MSD MODULE PART #83645 IS PERMITTED.
MSD DISTRIBUTOR, COIL & IGNITION BOX. DISTRIBUTOR PART NUMBERS PERMITTED ARE; 8551, 8534 &
8578. COIL PART #8222 & IGNITION BOX 6AL-6430. MSD IGNITION BOX MUST BE
LOCATED ON RIGHT SIDE OF DASH OUT OF DRIVERS REACH. CONNECTOR ENDS MUST USE MSD
WEATHER PACK PART # 8170; POSITION A-RED-12V IGNITION, POSITION B-BROWN OR
GREEN-TACH, POSTION C-BLACK-NEGATIVE COIL, POSTION D-ORANGE-POSITIVE COIL,
POSITION E-GREEN-NEGATIVE DISTRIBUTOR. THE POWER & GROUND
WIRES MUST USE MSD WEATHER PACK PART # 8173; POSITION A-RED-12V BATTERY,
POSITION B-BLACK-GROUND NEGATIVE BATTERY. WIRES MUST BE WRAPPED IN A
LOOM & PASS THROUGH FIREWALL AT FIRST OPTION. ONLY 1 (ONE) MSD BOX
PERMITTED. THE FOLLOWING WILL NOT BE
PERMITTED; ADJUSTABLE TIMING CONTROLS SUCH AS EXTERNAL ADJUSTMENT KNOBS ON THE
DISTRIBUTOR, IGNITION DELAY/TIMING RETARD DEVICES, ANY ACCESSORIES THAT
REGULATE THE POWER SUPPLY.
EXTERNAL RPM LIMITER : PERMITTED. MSD SOFT TOUCH REV CONTROL PART# 8728 ONLY. MUST BE MOUNTED TO THE ENGINE SIDE OF THE FIREWALL IN PLANE VIEW.
VIOLET WIRE MUST BE CUT BACK TO THE HOUSING. GREEN & WHITE WIRES MUST RUN
DIRECTLY TO COIL NEGATIVE.
TACHOMETER: TACHOMETER WIRE MUST RUN DIRECTLY TO THE DISTRIBUTOR.
THIS WIRE MUST BE SEPERATED FROM ALL OTHER WIRES AND MUST REMAIN UNOBSTRUCTED
FOR INSPECTION.
SPARK PLUGS: SPARK PLUG MUST
MATCH TYPE OF HEAD BEING USED. GASKET TYPE HEAD MUST USE GASKET SEAT SPARK
PLUG. TAPERED TYPE HEAD MUST USED TAPERED SEAT SPARK
PLUG.
BATTERY: MUST BE MOUNTED
INSIDE THE FRAME RAILS AND FORWARD OF THE REAR END. THE BATTERY CANNOT BE
INSIDE THE DRIVERS COMPARTMENT. THE POSITIVE BATTERY CABLE MUST BE INSIDE THE
FRAME RAILS.
ALTERNATOR: OEM TYPE BELT
DRIVEN BY REAREND OR ON THE FRONT OF THE
ENGINE.
POWER STEERING
PUMP:
MUST BE BELT DRIVEN ON FRONT OF ENGINE.
BELTS &
PULLEYS: V-BELTS OR SERPENTINE ALLOWED. NO COG BELTS. ALUMINUM
AFTERMARKET PULLEYS ALLOWED.
STARTER: STOCK OR AFTERMARKET
ALLOWED. MUST MOUNT IN STOCK LOCATION. NO REVERSE
MOUNT STARTERS.
ENGINE COOLING SYSTEM: RADIATORS MUST
REMAIN IN STOCK LOCATION. ALL CARS MUST BE EQUIPPED WITH A MINIMUM ONE (1)
GALLON OVERFLOW CONTAINER. OVER-FLOW HOSE MUST
BE AT RIGHT REAR OF CAR. ONLY WATER CAN BE
USED AS AN ENGINE COOLANT. THE ONLY APPROVED COOLANT ADDITIVE ALLOWED IS WATER
WETTER.
WATERPUMP: STOCK OEM MECHANICAL
TYPE ONLY. MUST BE BELT DRIVEN. ALUMINUM PUMPS ALLOWED. NO RACEMATE TYPE
PUMPS.
FUEL PUMP: ONE MECHANICAL STOCK
TYPE DIAPHRAM PUMP ONLY. MUST BE IN STOCK LOCATION.
FUEL:
SEE RULE 20J-15, 20J-16. ADDITIVES OF ANY TYPE OR CATALYSTS ARE NOT
ALLOWED. NO COOLING OR ICING OF THE FUEL. THE USE OF UNLEADED FUEL IS NOT
PERMITTED. FUEL MUST PASS A CHEMICAL TEST.
THE
FOLLOWING FUELS ARE THE ONLY FUELS APPROVED FOR COMPETITION:
SUNOCO;
STARDARD, SUPREME
POWER
MIST; TWS, T112
ROCKET
BRAND; 111
TURBO
BLUE; TURBO BLUE LEADED
VP; C12
PARTS PACKAGE INCLUDES; HOLLEY
600 CFM CARBURETOR, CARBURETOR PLATE, TIMING COVER & BOLT KIT, DAMPER,
ROCKER STUDS, WASHERS, DISTRIBUTOR GEAR, OIL FILTER ADAPTOR, FUEL PUMP ROD,
FUEL PUMP PLATE, SPARK PLUG WIRES, FUEL PUMP, FUEL LINE CARBURETOR, FUEL LINE
CARBURETOR TO FUEL PUMP, OIL PAN GASKET, OIL FILTER & OIL.
ENGINE WILL BE SEALED PRIOR TO
PICK-UP.
AUTHORIZED
SERVICE CENTERS;
NATS RACING ENGINES, 702 WARREN AVE, SWANSEA, MA
02777, PHONE 508-336-4142
T/A ENGINES, 124 HILL TOP RD, PLANVILLE, CT
06062, 860-747-6713
NAT CHIVIATONE & TONY
ALTERI ARE AVAILABLE AT THE TRACK FOR ANY TECHNICAL ASSISTANCE THAT MAY BE
NEEDED BY THE RACER.
THOMPSON SPEEDWAY RESERVES THE
RIGHT TO CONFISCATE ANY ENGINE FOR TESTING, SUPPLYING THE COMPETITOR WITH A
MOTOR, IF AVAILABLE, UNTIL TESTING IS COMPLETE. ANY ENGINE FOUND TO BE
ALTERED/TAMPERED WITH, WILL RESULT IN LOSS OF ENGINE & ALL EARNED POINTS.
DRIVETRAIN:
BELL HOUSING: COMMERCIALLY
MANUFACTURED ALL STEEL FULLY ENCLOSED BLOW SHIELD. A 2 HOLE IS MANDATORY FOR
INSPECTION OF THE CLUTCH ASSEMBLY. A 1 HOLE IS REQUIRED ABOVE THE RING GEAR TO
ASSIST IN CRANKSHAFT ROTATION DURING COMPRESSION TESTING.
CLUTCH &
FLYWHEEL: OEM OR EXACT REPLACEMENT MAY BE USED PER THE FOLLOWING;
MINIMUM SIZE CLUTCH AND PLATE IS 10. NO PADDLE OR BUTTON CLUTCH DISC. NO
ALUMINUM, TITANIUM OR CARBON FIBER CLUTCH OR FLYWHEEL PARTS, INCLUDING
FASTENERS. NO DRILLING, LIGHTENING OR ANY MODIFICATIONS. MINIMUM WEIGHTS ARE;
FLYWHEEL 12.5 LBS., CLUTCH COVER 13.0 LBS., CLUTCH
DISC 3.0 LBS. HYDRAULIC CLUTCH LINKAGE IS ALLOWED.
CRATE MOTOR CLUTCH; 7 Ό QUARTER MASTER CLUTCH PART
#298103. GM FLEX PLATE PART #14088765 WEIGHT 4 LBS.
TRANSMISSION: STOCK OEM 3 OR 4
SPEED MANUAL TRANSMISSION ONLY. ALL GEARS MUST BE IN WORKING ORDER FROM INSIDE
THE DRIVERS COMPARTMENT WITH MECHANICAL LINKAGE. ALL INTERNAL PARTS MUST BE STOCK. STOCK GEAR
RATIOS ONLY. NO POLISHING, WELDING, MACHINING, DRILLING OR LIGHTENING OF ANY
PARTS. HIGH GEAR MUST HAVE A 1:1 RATIO, AND NO OTHER GEAR MAY HAVE A RATIO
CLOSER THAN 1.2:1. NO OVERDRIVE OR SPECIAL PRODUCTION TRANSMISSIONS ALLOWED.
TAILSHAFT MAY USE ROLLER/NEEDLE BEARINGS. THERMAL
COATINGS ARE NOT ALLOWED.
DRIVESHAFT: STEEL ONLY.
REAREND: FULL FLOATER OEM, QUICK CHANGE OR NON QUICK CHANGE ALLOWED.
CENTER SECTION & BELL MAY BE STEEL, ALUMINUM OR MAGNESIUM. FORD 9 MUST USE
STEEL CARRIER ASSEMBLY. MAGNETIC STEEL AXLE SHAFTS &
TUBES. LOCKED
DIFFERENTIALS ONLY. NO LIMITED SLIP, RATCHETING, OR TORQUE SENSING
DIFFERENTIALS ALLOWED. SOLID TYPE, NON-TORQUE ABSORBING,
NON-CAMBERED DRIVE FLANGES & PLATES. NO CAMBERED OR CROWNED AXLES.
GEAR RULE: MINIMUM 4.68 - MAXIMUM
5.14
CRATE
MOTOR: MINIMUM 4.30:1 MAXIMUM 4.50:1
ADJUSTING
DEVICES:
THE ONLY DEVICE IN THE DRIVERS
COMPARTMENT WILL BE FOR BRAKE PROPORTIONING (FRONT TO REAR ONLY). NO OTHER
DEVICES OF ANY KIND TO CONTROL OR ALTER THE HANDLING, WEIGHT PERCENTAGE, RIDE
HEIGHT ECT. OF THE CAR WILL BE ALLOWED.
ADDITIONAL
INFORMATION:
LATE MODELS MUST ALSO COMPLY WITH THOMPSON INTERNATIONAL
SPEEDWAY GENERAL/SAFETY RULES.
THOMPSON INTERNATIONAL SPEEDWAY RESERVES THE RIGHT TO
CONFISCATE FROM THE FEATURE WINNER ANY/OR ALL OF THE FOLLOWING ITEMS; INTAKE
MANIFOLD, IGNITION MODULE, DISTRIBUTOR, TACHOMETER, ECT FOR THE PURPOSE OF TESTING. PARTS DEEMED ILLEGEGAL WILL BE
CONFISCATED. PARTS FOUND TO BE LEGAL, MAY BE RETURNED OR THE COMPETTOR WILL RECEIVE EITHER NEW PARTS OR MONETARY
COMPENSATION.
THOMPSON INTERNATIONAL SPEEDWAY ALSO RESERVES THE RIGHT TO
ISSUE A STOCK OUT OF THE BOX INTAKE MANIFOLD AND/OR IGNITION MODULE, PRIOR TO
ANY RACING EVENT, OR DURING POST RACE INSPECTION, CONFISCATING THEIR PARTS.
FAILURE TO COMPLY WILL RESULT IN THE LOSS OF ALL EARNED POINTS AND/OR
SUSPENSION.
