Rules



2022 Stock Thunder Rules

2022 Stock Thunder Rules

 

GENERAL

  • 1968 or newer American made car.
  • No station wagons, trucks, jeeps, or convertibles.
  • No strut cars.
  • Car must weigh 3,200 pounds with driver after race.
  • Any weight must be securely fastened with bolts.
  • Weight must be painted white with car number. 
  • Must run pump gas or racing fuel. 
  • No E- 85, oxygenated racing fuel or additives.
  • No nitrous or traction control.
  • Anything not covered in the rules must be stock.

 

WHEELBASE / FRAME 

  • Frame must match make and model or car, 1’’ tolerance +/- allowed 
  • No shorting of frame, must be stock.
  • No X-ing or cutting.
  • Rear frames may be repaired from center of rear housing to rear bumper with square tubing, mounting points must stay stock.  
  • Wheelbase must match make and model, 1’’ tolerance +/- allowed 
  • Length between spring eyes must be stock.
  • Engine must remain in stock location, aftermarket mount ok. 

 

BODY – visual protest only

  • Cars must be neat in appearance.
  • Steel or aluminum bodies ok but must retain stock shape and appearance.
  • 42’’ deck height with no more than 4’’ of rake (top of fender to rear of car).
  • Must have deck lid.
  • Gutting of hood and trunk ok. 
  • Front inner wheel wells can be cut or removed for clearance, but not excessive. 
  • Front and rear bumpers required.
  • Bumpers cannot exceed past quarter panel.
  • Rubber nose and tail ok, must be stock appearing.
  • No late model type noses, fender flares or cow scoop.
  • Rear of car must be closed, may use sheet metal. No holes or flaps. 
  • Replacement roof ok, minimum of 48’’ x 50’’.
  • No slant roofs.
  • Must be steel or aluminum.
  • 13’’ minimum door and rear glass opening on left and right side.
  • May use Lexan in rear side windows.  
  • Breather must be boxed in on all four corners, cannot exceed 3’’ high.
  • Cannot pull air from inside car.
  • Rear spoiler may not exceed 60’’wide and no taller than 6’’.
  • No spill plates, straps, or supports of any kind. 
  • No side spoilers.
  • Must have stock floor pan and firewall in original location.
  • Floor pan must extend to rear of driver’s seat and must go from frame rail to frame rail.
  • Firewall must extend to doors with all holes covered.  
  • May replace dash with sheet metal. 
  • Interior may be boxed in with steel or aluminum. 
  • Interior metal must not be higher than dash.
  • Radiator must remain in stock location.
  • Aluminum radiator with fabricated brackets ok.
  • No electric fans.
  • Fuel cell must be mounted securely inside trunk with firewall between driver.
  • Seat must be securely fastened to roll cage. 
  • Cars must have legible numbers on both sides and roof. 

 

SUSPENSION

  • Suspension and suspension mounting points must be stock for chassis unless otherwise stated.
  • May use OEM stock replacement for make and model.
  • May run racing springs with adjustable buckets.
  • Leaf spring cars may adjust rear shackles and have 4’’ lowering block maximum.
  • May move top mounting perch or cut OEM a-arm. 
  • Tubular non-adjustable a-arm also ok.
  • Bottom perch and a-arm must remain stock.
  • May use screw in ball joints, must be within ¼ ‘’ tolerance. No adjustable or rebuildable. 
  • May shorten top OEM trailing arm or adjust perches for pinion angle only. 
  • Aftermarket bushing ok. No swivel, offset or monoballs allowed. 
  • Front shocks must be in stock location with 3’’ of travel up and down. 
  • Rear shocks must be in stock location with 3’’ of travel up and down. 
  • Monte Carlo shock must be within the outer edges of trailing arm. 
  • Bilstein ak1043 on front – Bilstein ak1044, ak1054 on rear. 

 

REAREND

  • GM 10 or 12 bolt or Ford 9’’ floater ok 
  • 9’’ mounting points must be stock type with no adjustability. 3 ½ minimum – 4 ½ maximum from center of the axle tube to center of trailing arm bolt. (Additional holes must be blocked off)
  • Any OEM gear ratio
  • Locked or limited slip allowed.
  • Aftermarket axles allowed. 
  • No gun drilled or ball spline. 
  • All components must be steel.
  • No lighting, gun drilling, scalloping, or polishing of any parts.

 

 WHEELS / TIRES / BRAKES

  • 15’’ by 8’’ (1/4 ‘’ tolerance) steel wheels 
  • May run beadlocks, must face out. 
  • May run offset rims and wheel spacers.
  • 8’’ towel city recaps split yellow dot tire only 
  • No treating or conditioning of tires. 
  • Must punch 55 at any time. 
  • Stock brakes and master cylinders. Must have 4 wheel working brakes. 
  • Dual master cylinder and adjusters allowed. 
  • OEM brake calipers only.  

  

IGNITION

  • Stock type ignition and HEI distributor only.
  • No billet or circuit board. 
  • No boxes or high performance parts.
  • No altering firing order
  • All cars must have kill switch within easy reach of driver with clearly marked on and off.

 

CARBURETOR

  • 600 Holley part #1850 only. 
  • May remove choke flaps only.
  • No removal of choke horn. 
  • Gasket adapter part #1932 (may use 2 .070 gaskets maximum).
  • No heat shields around carburetor. Dust shield mounted to air filter base allowed. 

 

INTAKE

  • Stock cast iron only.
  • No aluminum or Holley pattern factory intakes.
  • Must have vacuum fitting behind carburetor.

 

HEADS

  • Any open chamber head, but must meet the following criteria
  • No aftermarket heads.
  • May run stock replacement screw in studs or pin them.
  • May run aftermarket valve cover.
  • Heads cannot be less than 72cc.
  • No angle milling.
  • Stock or stock replacement valve for make and model.
  • Steel valves only.
  • Stock stem diameter.
  • Valve springs can be z28 springs.
  • .194” max wire diameter
  • Shims can used under valve springs at a limit of .60 per spring.
  • May use offset locks, but not with shims.
  • No cutting of valve spring pocket.
  • Comp 742 retainers or stock allowed.
  • May have 3 angle valve job.
  • Top 30 degrees.
  • Set 45 degrees.
  • Bottom 60 degrees. .250 maximum width.
  • Rocker arms must be stock or stock replacement. 1.5 maximum. No self-aligning rocker arms.
  • No porting or polishing.
  • No vortec parts. 
  • May run poly locks. 

 

CAM 

  • Stock timing chain or Cloyes c-3023x adjustable timing chain.
  • .390 – .410 lift
  • Lobe separation +/- 1 degree
  • Advancing or retarding the cam in car with adjustable timing ok.
  • Cloyes c-3023x only.  No cam buttons.
  • Stock cam or stock replacement cam only.
  • Duration for intake + 2 degrees / – 10 degrees.
  • .006 – 256 degrees
  • .050 – 195 degrees
  • .200 – 95 degrees
  • Duration for exhaust + 2 degrees / – 10 degrees
  • .006 – 261 degrees
  • .050 – 202 degrees
  • .200 – 106 degrees
  • Must have 18’’ vacuum at 1000 rpm
  • Hydraulic cam and lifters only.
  • Cams cs-274 sealed power, ccs-2 melling, and comp cam 12-105-3 are stock produced cam.
  • All cams must pass the above specifications. Cams not meeting these specs will be illegal.

 

BOTTOM END

  • Any OEM stock size engine  – 363 maximum  – .060 over bore maximum.
  • No high performance engines or special order parts.
  • ARP rod bolts allowed, must remain stock size – 3/8.
  • One piece rear seal block allowed.
  • Must use stock replacement, low compression piston.
  • Cannot cut top of piston.
  • No flat top, 4 eyebrow piston.  Must be dished.
  • Speedpro h423 DCP or h423 NCP replacement piston allowed.
  • No metric ring package.
  • Pistons must be at least .009’’ in block.
  • No bottoming of lifters.
  • Stock crankshaft.
  • Cast crank must weigh 48 lbs.
  • No knife edging or lighting, etc….
  • No stroke or destroke.
  • Journals may be turned no more than .060’’.  stock replacement bearing only.
  • Rod width may not be less than .940. stock replacement bearing only.
  • No powder rods. 
  • Stock timing chain gear set or Cloyes c-3023x adjustable timing chain.
  • No offset key ways.
  • Balancer – 6 ¾ by 1’’  – no machining.
  • Racing pulleys or v-belt racing pulleys allowed.
  • No serpentine pulleys.
  • Aluminum water pump allowed.
  • Aftermarket fuel pump and fuel rod allowed.
  • Aftermarket power steering allowed.
  • Two piece timing covers allowed.
  • No remote oil filter or evac systems.
  • Stock style fuel pump only.
  • No rear mounted pumps.  

 

EXHAUST 

  • Steel headers only, standard 4 to 1 only. Must exit parallel to the ground.
  • No Tri-y or merge style headers.
  • No stainless or coated headers.
  • May run up to 2’ extension same size as collector. 
  • Must be straight with no type of restrictions. 
  • No mufflers.

 

TRANSMISSION 

  • Must be stock with all working forward and reverse gears.
  • 350 or 400 turbo automatic allowed.
  • Must have OEM working torque converter  -11’’ minimum.
  • No power glides
  • Transmission cooler allowed.
  • Three speed straight drive, cast iron allowed.
  • Must have blow proof bell housing or scatter shield  -1/8’’ steel.
  • Stock steel flywheel – 14 pounds minimum.
  • Stock type clutch and pressure plate – minimum 10.5’’  – pressure plate 12 pound minimum. 
  • May use hydraulic clutch.  
  • Aftermarket throw out bearings allowed.
  • Gears must be stock
  • No lightening, polishing, or coating of any internal parts. 

 

DRIVE SHAFT

  • Must be stock for model of car or may run 2’’ drive shaft. 
  • Must be steel.
  • No carbon fiber or aluminum drive shafts allowed.
  • Must be painted white.
  • ‘’U’’ or square type safety loop on front of drive shaft assembly required. 

 

PROTEST AND CLAIM RULE

  • Protest bottom -$600 
  1. Remove crank weigh crank inspect journals, visual rod and piston from bottom crank will be weighed with gear and pilot bushing.
  2. Remove piston and rod from engine and visual crank and check journal in place 
  • Acceptance fee -$200
  • Track keeps -$200 

 

  • Protest any 3 items -$300                                           
  • Acceptance fee -$100                                                      
  • Track keeps -$100

 

  • Cam protest – $300                                                       
  • Acceptance fee -$100
  • Track keeps – $100 

(protester chooses one lobe, tech reserves the right to look at others also)

 

  • Protest tire or gas – $150
  • Acceptance fee -$ 150
  • Track keeps -$150 

 

  • Tire punch at any time -$25 (track keeps)

(tech may refuse under some circumstances)

 

 

 

 

 

  • Visual protest -$25 (track keeps) 
  • Looking for small or unimportant errors or faults will not be tolerated or allowed. We are aware that this rule book may not cover every situation or issue. Officials have final say on ALL protested or claimed item issues.

 

  • Tech man has final say

 

2021 General Track Rules

2021 GENERAL TRACK RULES

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the conditions of all events and by participating in those events, all participants are deemed to have complied with these rules. No expressed or implied warranty of safety shall result from publications of or compliance with these rules and/or regulations. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official. The race director shall be empowered to permit minor deviation from any of the specification herein or impose any further restrictions that in his opinion does not alter the minimum acceptable requirements. No expressed or implied warranty of safety shall result from such alteration of specifications. Any interpretation or deviation of these rules is left to the discretion of track management. Their decision is final.

General Track Rules:

1. Driver, car owner and crewmembers will conduct themselves in a calm and sportsmanlike manner at all times.
2. Interpretation of rules and decisions of speedway officials will be final.
3. Ignorance of rules will not be accepted as an excuse for their violation.
4. The management reserves the right to refuse entry to any car or person without question.
5. The driver alone will be the sole spokesman for their car owner in any and all matters pertaining to the race and must talk with the official in charge.
6. Open drinking of intoxicants in the pit area by drivers will not be tolerated. Offenders will be subject to immediate ejection.
7. The following activities will result in fines, loss of winnings and points, and be subject to suspension and arrest. Loud and abusive language toward track officials, Starting or engaging in a fight, Deliberate contact during caution laps or after the race has completed. Disorderly conduct will not be allowed at the pay-off window Subjecting any employee or official to improper or abusive language or profane signs. Any person found with any weapon on him or his vehicle is also subject to arrest. Penalty will be at the official’s discretion.
8. Any fines, suspensions, and/or protests must be settled with speedway management before a driver, car owner or crew member will be allowed to enter restricted area at another event.
9. Any cars entering race track other than at practice times allowed by flagman will be subject to action at discretion of flagman.
10. Any driver, car owner or crewmember going to the top of flag stand or tower without permission, to argue will be fined (minimum $150) at official’s discretion.
11. Car number must appear on roof and both sides to be scored.
12. Any situation not specifically covered by this rulebook will be acted upon by flagman; pit steward or management and decisions shall be final.
13. All cars must have chain in front and rear for hook up!
14. Fire Retardant driver uniform, gloves, helmet, five-point harness and fire extinguisher required. Window net is optional. If caught at anytime without one of these items, you will not run that date and you will forfeit all points and money.
15. Drivers may compete in no more than two divisions per night with and only pone rookie class. Change of drivers after heats will start in rear of main or will be disqualified. No exceptions!
16. A car is only allowed to compete in one division per night.
17. Any and all items not covered in these rules are non-protest items.
18. All prize money must be picked up at payoff window the same night. Failure to pick up money on night of race will result in forfeit of winnings. No exceptions.
19. Stock means that you cannot modify this part. (If the rules don’t say you can- then you can’t.)
20. The rules are configured to support different racetracks and what may be good at one track may not be good at another. As deemed necessary, the rules may be altered and/or changed to suit the track and/or the officials. Rules are based off of US production models and availability.
21. The track reserves the right to promote any driver up at any time without prior notice.
22. All weights or cc’s must be posted on hood. All weight penalties & weight breaks must be claimed on hood. If not posted and car is protested, this could result in a DQ.
23. Hans or like devices are recommended. A foam neck brace does not qualify as a head restraint. It is the responsibility of the driver, not Laurens Speedway to ensure that his/her device is approved, correctly installed, maintained and properly used.

Pre-Race Process
1. Attendance by drivers at drivers’ meetings is mandatory. If not in attendance, driver will start in the rear.
2. Visual protests – $50 (requiring no measurements whatsoever) must be presented to Tech man in writing before feature line-up commences. No visual protests taken after track announcer has made call for cars to come to staging area.
3. All drivers must be ready to compete in the event for which they are scheduled. If you are not staged in line up when cars are called to the speedway, you will start tail of field.
4. All Drivers must have a working Raceceiver when on track!

Race Process
1. After the race starts the Race Director/Flagman is in full control and his/her decisions will be final.
2. The Race Director/Flagman has final word on any on-track activities.
3. Any driver stopping before the completion of the first lap to bring out the caution will be put to the rear or penalized a lap at the discretion of flagman.
4. Any car (s) that is involved in any accident that brings out red or yellow flag will be lined up in the rear of the field. (This does not include cars that stop to keep from hitting the other cars.)
5. STARTS – All initial starts are double file, beginning off of turn four (4). Inside driver sets the pace. It is the outside driver’s responsibility to stay beside him. Jumping starts will put you back one row. After 2 double file attempts (jumps do not count), line up will go single file, Crate Late Model excluded.
6. RE-STARTS – Leader may re-start anytime after lights go out on Turn 4. Drivers jumping starts will be put in the rear.
7. Any cars not on the track when “okay” sign comes out will start at rear.
8. MULTI-CAR WRECK ON FIRST LAP: All cars get their spot back. Single car spin will go to rear. Any cars going to pit will go to rear.
9. No work can be done on racecar on the track. No tools allowed on track. No crew is allowed on the track, ever!
10. Any driver stopping on track and exiting car to argue with officials for any reason will be penalized at track official’s discretion.
11. In the event that two or more cars cross the finish line at the same time, the car next to the infield can be declared the winner.
12. No car can receive any assistance from another car during the last lap of the race.
13. Any car stopping on the track deliberately will be penalized one lap for the infraction.
14. Rough driving will be dealt with through fines and/or suspensions.
15. No crewmembers on the track ever!
16. Race back to the checkered flag only. (Green and yellow lights on means race back.) If the track is blocked or driver’s life in danger, we will go back for green, white, and checkered.
17. Lap traffic must stay to inside of speedway. (Any cars trying to hold up leaders will be black-flagged.)
18. Any car charged with three (3) unassisted cautions will be black-flagged.
19. Bringing out the caution to stop from going a lap down will be scored one (1) lap down.
20. Track official decisions are final.
21. A lap is classified as leader plus 3.

Post Race Process
Cars will exit the track and enter the pit area at a safe speed!
1. Top three cars must cross scales in order of finish for inspection after heats and features. All cars must have weight and any weight penalties posted on hood be for crossing the scales Scale tolerance 5 lbs. all classes.
2. Only driver may protest. Protesting driver must compete in race in question to file protest. All protests must be received by Tech Man and have his approval. Spite protests and protests done in an un-sportsmanlike manner will not be considered. If protested, driver may back pull protesting car only. You can only pull the car in front of you. (If you run 5th, and you want to pull 3rd place, you must pull 4th place on the same items as 3rd). Official’s decision is final.
3. All other protests must be presented to Tech Man, in writing, within five minutes of the winner of the feature race crossing the scales. Protest must be accompanied by protest fee. Back protests must be made within five minutes of notification that car been protested.
4. Driver of cars found illegal will forfeit points and money earned for entire race night.
5. The Tech Man has final word on any rule or protest.
6. Scale area is off limits to pit crews during official weighing. Please exit scale area after car has been pushed onto scales. No car will be weighed until area has been cleared.

Protest Rules
1. After protest has been filed and money has been put up, it will not be returned for any reason. Protest cannot be taken down once it is filed; this is to avoid swapping money, which is unfair to rest of field.
2. For protest money to go to car that has been protested, he must tear down and be checked and found legal.
3. Protests or questions will be made by driver only.
4. To protest any car in the field, you must finish directly behind them or protest all cars between. Must be on lead lap at checkered flag. Protested car may back pull protesting car only on equal or less items.
5. All protests must be submitted to the Tech man within five (5) minutes after the first car has crossed the scales.
6. Driver filing protest is all that will be allowed in protest area other than security and track officials.
7. Protested cars have (5) minutes to accept or refuse protest. After acceptance, protested car has 5 mins. to back pull protesting car. If he or she accepts the protest, parts must be ready for inspection within one (1) hour. (Tech man discretion)
8. Scoring/protest questions will be made AFTER the completion of ALL night’s racing. Scoring protest will only be done in an orderly manner. NO ARUGING!! Any disorderly conduct will result in disqualification and/or suspension

POINTS SYSTEM for all divisions will be as follows:
1. If there is a driver change during the race the points will go to the driver that started the race. If the change is made before the first attempt at a start the points
will go to the new driver.
2. Position Points 1st – 50 5th – 30 9th – 22 13th – 14 17th – 6
2nd – 45 6th – 28 10th – 20 14th – 12 18th – 5
3rd – 40 7th – 26 11th – 18 15th – 10 19th – 4
4th – 35 8th – 24 12th – 16 16th – 7 20th – 3
21st and back will receive 2 points each
3. Advancing points: One point will be awarded for every position a car moves up from the starting grid to the finishing order (A car that starts 2nd and finishes 1st will receive one advancing point, a car that starts 15th and wins the race will receive advancing points etc. You do not have to win to receive the points just advance. Points will not be taken away for losing positions).
4. If there is a tie for any positioning the final point standings the tie breaker will go to the driver with the most wins. If the tied cars have the same number of wins the tie breaker will move to the next position etc until a winner is declared.
5. For a person to be considered a car owner by track officials, the speedway must have a completed
W9 form in that person or company’s name and a 1099 tax form will be sent to them.

2022 602 Rules

We will follow the 2022 City Chevrolet Thunder Series Rules located at www.thunderdirtseries.com 

2022 FWD Rules

Laurens County Speedway will follow SEHA Rules.  They are as follows:

 

ALL VEHICLES MUST BE STOCK AND UNALTERED AS DELIVERED FROM FACTORY UNLESS OTHERWISE STATED

 

  1. 1980 OR newer front wheel drive, 4-cylinder passenger cars only. No all-wheel drive or all wheel steering allowed. No vans or pickup trucks.

 

  1. Body must maintain original dimensions, standard as from the manufacturer. Sheet metal body ok but must remain stock appearing. Aftermarket nose and tail may be used. Horizontal trunk lid surface must be covered, rear may be open. Aftermarket wing/spoiler OK on rear of car. If more than 2/3 of the body is sheet metal must add 50 LBS.

 

  1. Front fire wall must have all holes closed off. Fabricated dash and sheet metal interior ok.(Must have two access holes for inspection.) Floor pan, front and rear interior wheel wells must remain stock. If stock fuel tank is used trunk pan must be in place, if fuel cell is used must have rear fire wall in place. (If stock tank is behind rear axle it must be replaced with fuel cell enclosed in a steel can mounted securely in center of trunk.)

 

  1. All glass and interior trim must be removed. All flammable material must be removed.

 

  1. Hood must be held shut with at least two hood pins.

 

  1. All vehicles must have seamless tubing 4-point roll cage with X braced hoop behind driver and a minimum of three door bars with vertical bracing from top to bottom. Where bars connect to frame must be a minimum 1/4-inch steel plate welded to frame in a secure and safe manner. Front and rear bars OK but cannot protrude beyond bodywork. Main components of 4-point cage and driver’s door bars must be at minimum 1.5”x.095” tubing. Must add 3 crash bars in front of driver.

 

Engine/Transmission

 

  1. NO PERFORMANCE ENGINES. Stock 4-cylinder engine only. Maximum displacement of 2.2 Liters. No variable valve timing engines. Engine must remain stock as delivered by the factory and must remain in stock location. No Cosworth or rotary engines. No turbocharged or supercharged engines. ABSOLUTELY NO NITROUS. All engines must be for the make/brand of car for which they were manufactured. All internal and external parts must be for engine being claimed. No engine components can be lightened, altered, or modified in any way. ARP rod bolts, head studs, reusable gaskets o.k. but must be stock thickness. No performance gaskets or spacers. No high-performance components or aftermarket will be allowed in the engine or drive train. Stock carburetor or fuel injection system for the engine being competed only. Factory air box and piping with factory type filter (washable okay) or cone type air filter attached to corrugated piping inside of engine compartment may be used. (No slick wall piping) Cone filter may be attached directly to throttle body. (K&N ok) Exhaust manifold must remain stock with pipe extending beyond the driver’s seat, parallel to the ground. Headers allowed only as delivered from factory for make/brand of car. All flywheels must be stock as delivered from factory. Saturns with 1.9L engine may lighten factory flywheel to 13lbs.

*** May Bore engines up to .40 over.

 

Weight

 

  1. Up to 1.9L 2100lbs

2.0L and up 2200lbs

 

  1. There will no longer be any weight breaks for safety equipment. Strongly Recommend a full Containment seat, Head & Neck restraint. Fire extinguisher is required!

 

Transmissions

 

  1. All transmissions must have all working gears including reverse. No lightening, altering or removal of gears or transmission components. Open differentials may be welded.

 

Suspension

 

  1. Only stock suspension parts allowed. Drilling or cutting of the stock suspension parts for camber is OK but must be performed in a manner deemed safe by tech officials. Safety hubs OK. Car may be lowered with stock parts only. No performance or aftermarket shocks/struts, O.E. replacement or equivalent only. No adjustable coil overs. Stock shock location only. Cannot move where shock/strut mounts to car.

 

Brakes

 

  1. Must have functional OEM front brakes. Rear brakes may be removed. No bias adjusters or shut offs allowed.

 

Wheels and Tires

 

  1. 7-inch wide maximum. Racing wheels okay. May run racing wheel with beadlock on right front only if stock wheels on other 3. No excessive offset from stock wheels.
  2. Tires must have DOT stamp and legal for highway use. No performance, trick, gumball, fancy or exotic tires of any kind allowed. Track reserves the right to disallow any tire from use in competition in this class.

 

Safety

 

  1. SFI or FIA approved racing seat with minimum 5-point harness required. Harnesses must be SFI or FIA certified and must be in date. Fire extinguisher with gauge, mounted in quick release harness in reach of driver is mandatory. Racing helmet with SA2015 rating required. No motorcycle helmets.

 

  1. Anything to promote safety may be added with approval from tech man.

 

Buy Rule

  1. CAMSHAFT BUY RULE $100 PER CAM. Only the car behind can buy.

 

*** WEEKLY RACING ONLY*** NOT SEHA SERIES TOUR RACES.

*Computer Buy Rule $150. Top 5 can b uy furthest car back gets first choice.

*Transmission Buy Rule $500. Only car behind can buy.

*Engine Buy Rule $1,000. No bolt on’s included, Only car behind can buy.

 

 

 

PROTEST

*Any item tech man deems altered will be disqualified if not covered in rules.

 

  1. Intake, exhaust, throttle body and remove valve cover for visual inspection. $150 $50 acceptance fee. Track retains $50

 

  1. Complete engine protest. $500. $200 acceptance fee. Track retains $200.

 

  1. Visual protest $25 must be presented to the tech man in writing 30 minutes before the main event.

 

  1. Top five cars will be visually inspected directly after the main event each race. All cars may be subject to random inspection at any time.

 

  1. Looking for small or unimportant errors or faults will not be tolerated or allowed. We are aware that this rule book may not cover every situation or issue. Officials have final say on ALL protested or claimed item issues.

 

 

ALL RULES SUBJECT TO CHANGE OR CLARIFICATION A MINIMUM OF 2 WEEKS BEFORE NEXT EVENT AT THE DISCRETION OF THE TECH MAN. TECH MAN HAS FINAL SAY.

2021 4 Cylinder Rules

2021 Monster Mini Stock Association
General:
The Monster Mini Stock Association (MMSA) strives for the best 4cylinder
competition around, hands down. We welcome each and every one to the
2021 Racing Season. The following rules are set for 2021 Racing Season.
Good luck to every team.
The rules and regulations set forth herein are designed to provide for the
orderly conduct of racing events and to establish minimum acceptable
requirements for such events. These rules shall govern the condition of all
events sponsored and conducted by MMSA;
How ever there are certain rules and regulations that are set forth by each
track that will have to be adhered to. No express or implied warranty of
safety shall result from publication of or compliance with these rules or
regulations. They are intended as a guide for the conduct of the sport for
each competitor and spectator.

Conduct / Penalties:
There should be respect and compassion for every race team, track promoter,
track official and MMSA official. We must all carry ourselves in a
professional manner at any event. MMSA wants everyone to experience a
great time with hard, CLEAN racing for these big purse races. Keep in mind,
if we go to these tracks and do not conduct ourselves in a civil manner
(arguing, fighting, etc.) these tracks will not have us back. Put on a good
show, take your cars home in one piece and be ready for our next event.
Along with clean racing this applies to the crew as well. Drivers are
responsible for each and every crewmember on their team. If your team is
aggressive or initiates a fight with another MMSA race team, the DRIVER
of the aggressor’s team will be penalized. Remember: The DRIVER is
responsible for EVERY crewmember.
Punishable Offenses:
• Hitting another car under caution or after the race has been completed •
Exiting your car in an aggressive manner and approaching a competitor
(this includes the pit area).
• A crew member engaging another driver/crew in an aggressive manner
(this includes texting, social media, etc.).
• Cursing track or MMSA officials.
• Failure to comply with policy with a seasonal ban could result in a lifetime
ban.
Any act that MMSA deems as intentional could result in following
penalties.
First Offense:
Two-race suspension; points and monies forfeited for that night and possible
fines before reinstatement.
Second Offense:
Banned for the remainder of the MMSA season; monies for that night and
points for the ENTIRE season forfeited and possible fines before
reinstatement. Third Offense:
LIFETIME ban from ALL MMSA events

MMSA Protest Procedures:
A protest fee and written request must be made to the MMSA Technical
Inspector within 5 minutes of the end of the main event (Checkered Flag).

A) In order to protest a car you must finish behind that car or you have
the option to protest each car that finishes ahead you. If it is a multi
car you must protest each car on the same items.

B) 2 items $300 with a $100 acceptance fee with MMSA/TRACK
retaining $100

C) Bottom End $400 check for stock crankshaft and steel connecting
rods with a $100 acceptance fee with MMSA/TRACK retaining $100

D) Complete Engine $800 this will consist of camshaft, head, intake/
spacer, carburetor, cc’s, crankshaft and steel connecting rods with a
$200 acceptance fee with MMSA/TRACK retaining $200

E) Bumper To Bumper $1,100 this will consist of complete engine,
flywheel assembly, transmission, rear end, suspension and checking
for traction control with a $250 acceptance fee. With MMSA/TRACK
retaining $250

F) Fuel Trackside $50 can be protested as a single item or used as a third
item only in another protest. On multi-car protest, if protesting fuel
only, any car finishing ahead of that car can be protested on Fuel
Only. No acceptance fee $50 retained by MMSA/TRACK.

G) Fuel Lab Test $150 will be sent to an independent lab and compared
to VP samples with a $150 acceptance fee. Can be protested as a
single item or used as a third item only in another protest. On multicar
protest, if protesting fuel only, any car finishing ahead of that car can
be protested on Fuel Only.

H) Tire Benchmark Protest $125 per tire with $125 acceptance fee. 3
stripes from specified tire the protester wants checked will be sent to
an independent lab for testing. This can be protested after qualifying
or main event. Tire sample MUST meet benchmark provided by
Hoosier to the lab. If protesting tire only, any car finishing ahead of
that car can be protested on tire’s only.

I) Tire Chemical Scan Protest $300 per tire with $300 acceptance fee. 3
stripes from specified tire the protester wants checked will be sent to
an independent lab for testing. This can be protested after qualifying
or main event. Tire sample MUST match sample provided by
Hoosier to the lab. If protesting tire only, any car finishing ahead of
that car can be protested on tire’s only.

J) Visual protest is $50 retained by the MMSA/ TRACK TECH must be
made within 30 minutes before qualifying, heat race or main event.
This includes Bodies

K) If protested you have the right to back protest. Protested car has 5
minutes to decide if they want to back protest. After all protest has been
filed parts must be ready for inspection within half (1/2) hour. (Tech man
discretion)

L) Once a protest has been filed it will be final. There will be no
dropping protest.

M) Anything found illegal may be confiscated by the MMSA and fines
will be induced before the next MMSA sanctioned event.
N) IF DECLARED ILLEGAL FOR ANY REASON ALL MONEY
AND POINTS WILL BE FORFITTED.
O) ANY MONEY NOT PICKED UP AT TRACK ON NIGHT OF
RACE WILL BE FORFITTED UNLESS ARRANGEMENTS HAVE
BEEN MADE.

Pre-Race Inspection:
All cars must go through pre-race inspection. At this point a MMSA official
has the right to check the following: carburetor, suspension, body, safety or
chassis. Driver/ Crew is responsible for informing MMSA / Track Tech of
any penalties or weight breaks. All heat shields are to be removed at this
time. If found not to meet MMSA rules you could be subject to change the
part or add weight at this time. Pre-Race inspection ends when the drivers’
meeting starts, you must be in line. If you do not go through pre-race
inspection you will be penalized and first out for qualifying or starting last in
the last heat race.

Post-Race Inspection:

The top 5 cars in the feature are to cross the scales with the top 3 proceeding
to the tech area.

RACE PROCEEDURE:
Sign in: Must have someone to pay entry fee in person in order to be put on
the list.
RACE: On any start or restart, anyone jumping out of line or firing before
the green is out will be warned ONE time. Do it a second time you will be
put back ONE ROW. Third time you go to the TAIL OF THE FIELD.
In the event of a caution with 5 laps or less, the restart will be single file. A
lap is complete when the leader plus 4 cross the line (Top 5).
Any infraction of the rules that are not listed will be dealt with at time of
infraction and penalties imposed up to suspension from the series depending
on the nature of the infraction. MMSA HAS FINAL SAY!

Safety:

All cars must have a roll cage that has been approved by the
MMSA/TRACK. All drivers MUST wear a full fire suit (jacket and pants).
Window nets are recommended. All cars MUST have a working Fire
extinguisher within the reach of the driver. Driver
is not to exit car unless it is on fire or upside down. If driver exit’s car for
any other reason is subject to be disqualified.
NO TWO WAY RADIO’S, Raceceiver only, NO ELECTRONIC
DEVICES ALLOWED INSIDE CAR SUCH AS CELL PHONES,
TRACTION CONTROL DEVICES. NO MIRRORS ALLOWED.
You must have a full containment seat or head / neck restraint device or you
will not be permitted to race.
All added weight MUST be secured by ½” bolt and painted white with car #
on it.
**RACING GLOVES AND RACING SHOES ARE MANDATORY THIS
YEAR**

Fuel:

The official Fuel of the MMSA is VP Racing Fuel: VP
110
THE VP BLUE IS NO LONGER ALLOWED. VP
DOES NOT OFFER A SPEC SHEET ON THIS
FUEL SO IT CAN NOT BE TESTED

Fuel is to be NON OXYGENATED
Buying fuel from the track is allowed but MUST inform Tech that fuel was
purchased from track if fuel is checked.
It is highly recommended to purchase fuel from the series by the drum or
gallon from the series trailer.

Vehicles:

A) Any two or four door foreign or domestic car with a 94-101.5
wheelbase. Wheelbase must match make and model of car.
B) Must have correct CC’s/weight listed on hood with penalties and
weight breaks added for scales. If not listed correctly you could be
disqualified.
C) May have a complete aluminum body but must retain stock shape and
appearance. (See Body Measurements) D) Interior panels may be
removed.
E) NO FWD or MID Engine Cars
F) Must have floor pan on both sides to rear of front seats. MAY CUT
OUT FOR RUST BUT MUST BE REPLACED WITH AT LEAST 16
GUAGE STEEL
G) Must have a rear firewall or drivers compartment must be boxed in
completely.
H) After market nose piece OK. No wider than 1 inch outside of tires.
Front fenders must be made of steel or aluminum . (NO MD 3 STYLE
NOSES ALLOWED WITH MOLDED FENDERS, ELEPHANT
EAR OR WING) ( NO PLASTIC FENDERS )
I) May run a 6 inch rear spoiler – can’t go over side of quarter panel – no
wider than the width of the car – spill plates OK spill plate
measurements bottom is 16 inches rear 8 inches high 4 inches across
the top rear and 4 inches high in the front. (see body measurements)
J) Interior spoiler no more than 4 inches high and NO higher than dash.
Can’t extend past driver seat.
K) Rear bumpers must NOT extend past the inside of the rear tires unless
it has a bumper cover or turns forward (if turned forward must be on a
90° angle NO SHARP CORNERS / EDGES)
L) Nose 70-inch maximum width.
M) 68-inch maximum width at ANY point.
N) 38-inch maximum ground to deck (bottom of spoiler).
O) Optional: Rear of car can remain open. Aluminum ok to close rear of
car.
P) May use lexan in rear window. If running one side must have in both
windows.
Q) Must start the race with hood.
R) Breather may stick through hood.
S) NO Cold Air boxes allowed
T) May have heat shield under hood, over the header only no longer than
length of cylinder head. NO COMPLETE HOOD UNDER HOOD.
U) May have hole in firewall big enough for the header to pass through
(tech discretion if hole is to big).
V) May replace top 1/4 of firewall with steel or aluminum (this doesn’t
mean the whole firewall) no lower than original master cylinder hole
in firewall. No holes above or below the deck.
W) No additional side spoilers on side of the roof.

** Acceptable body infractions will result up to a 50lb weight penalty in
the area of the infraction**

** All body infractions are not acceptable tech man discretion**

Chassis / Suspension:

A) Must have a roll cage and all safety equipment.
B) All chassis /suspension components must be either OEM or OEM
replacement and to be UNALTERED unless specified throughout the
following rules.
C) Roll cage must be secured to the unibody.
D) NO Tube Chassis Allowed.
E) May tie chassis together by splitting floor pan and put square/round
tubing in from the top and may stick through floor pan BUT NOT
totally underneath. NO “X” Bracing Under Floor Pan.
F) Square/round roll cage tubing from strut towers forward is acceptable.
G) May use square/round tubing or roll cage material from back of shock
mounts to rear of car must be straight no angling of material.
H) All A frame, trailing arm’s and leaf spring mounts must be stock and
mounted in STOCK location (may cut lower A frame for caster /
camber adjustments). MAY DRILL HOLES IN FRONT LOWER
CONTROL ARMS TO KEEP MUD OUT. Max of 4 holes.
I) May take spindle that came on car and machine to fit a later model
strut. All machining and or shims must be parallel. No angle milling/
grinding to enhance performance.
J) May cut top trailing arm (s) or re drill for pinion angle only.
K) May have spring locator/ bucket on lower control arm to keep spring
in location.
L) Lowering blocks ok
M)Leaf spring cars may lengthen rear shackle.
N) Caster / Camber plates ok
O) Adjustable buckets or Jacking Bolts are ok but MUST remain in
STOCK location (Buckets or Jack Bolts may be raised for spring
travel). If not in STOCK location you may be subject to a weight
penalty. Buckets or Jack Bolt Must Be in Fixed Location. (Tech’s
Discretion) (May select a random car to measure by for comparison)
P) Ford may run coil over on front struts.
Q) May cut upper or lower control arm for caster / camber.
R) May cut pan hard bar must be NON ADJUSTABLE. Must be located
in STOCK location.
S) Mono Balls Allowed
T) Stock Mounted body shocks may have heims (bottom only) shocks
may be adjustable (dampening) NO CANISTER STYLE SHOCKS
ALLOWED
U) May adjust shocks for travel but not change the angle of the shock
(not mounted to roll cage) (No adjustable bracket)
V) Offset in steering rack ok
W)Bump steer Not Allowed (NO heims or shims/ spacers)
X) ** If any suspension component not in STOCK location you will be
subject to a weight penalty.
Y) ** $100 buy rule per shock/$200 for strut
Z) Cars that came with upper and lower control arms on the front from
the factory will be allowed to run longer ball joints in the factory
mounting location. This is to allow for increased caster/camber
adjustment only.

Brake System:

A) 4 Wheel disk brakes permitted must have OEM components
B) Dual master cylinder permitted.
C) 3 Wheel brake shut off permitted
D) No adjuster for brakes from front to rear in reach of driver.
E) Stock rotors and drums No cutting of fins off of drums. No drilling of
holes in rotors. May remove caliper and rotor on RF Only (Ford on a
Ford Toyota on a Toyota). No exotic machining.

Wheels & Tires:

A) Wheels Steel 8” maximum width. Bead locks ok (bead lock must face
outward).
B) May have bead locks on all 4 wheels.
C) Hoosier 1600 (NO GROOVING or SIPPING)
D) No chemicals allowed (see protest)
E) Must meet Hoosier benchmark at an independent lab.
F) Needling allowed

Rear ends:
A) Any stock up to 8.8 for make of car.
B) No gun drilled axles (may weigh axles to compare if necessary)
C) Axle- Stock OEM or an OEM replacement permitted (may weigh to
compare if necessary)
D) No full spools
E) Mini spool OK steel only.
F) May lock rear end by weld, mini spool, limited slip (limited slip unit
must be stock NO aftermarket units).
G) NO RATCHET SPOOL ALLOWED!
H) May run cut gear.
** ENGINE: ALL Engine Core Parts (ex: Block,
Head, Crankshaft and Intake) Must Have Been
Available on Cars or Trucks Sold to the General
Public by Mass Production. All Parts Must Be
OEM of the Same Brand Vehicle You Are Racing.
ALL PARTS MUST HAVE COME ON
VEHICLES FROM THE UNITED STATES OF
AMERICA. NO FRONT WHEEL DRIVE,
MARINE, INDUSTRIAL OR SPECIAL
PRODUCTION PARTS PERMITTED.**
Engine option #1 S.C. Stock 4 type weight / lb
2000lb Minimum. See CC’s weight:
A) Stock engine location. No altering of firewall to set engine back
B) No engines with more than 2 valves per cylinder.
C) Ford in a Ford: Toyota in a Toyota.
D) No rotary or turbo or double overhead cam engines permitted
E) Cannot mix and match different cc engines to come up with odd ball
cc’s must stay basic bore and stroke combo’s that was produced by
the manufacture.
F) OEM blocks only .080 over bore max (other than listed). 5cc for wear
not to exceed 2500cc + .080 over bore. Toyota 3tc may bore to .120
over
G) Ford may Sleeve a 2300cc block to a 2000cc.
H) Aluminum cam gear or pulley allowed.
I) Any steel connecting rod, no aluminum, titanium or carbon fiber.
J) NO titanium wrist pins.
K) Only Babbitt style bearings Allowed (No roller bearings) coated ok.
L) Stock crank with stock stroke ± .010 tolerances.
M) Crankshaft rod journals maybe ground no smaller than 1.771
N) NO AFTERMARKET CRANKS. (Stock lightened crank must add
50lbs in front of firewall)
O) All engines must use an in-block wet sump oil system.
P) Racing oil pans permitted.
Q) NO dry sumps allowed.
R) Any flat top piston – Toyota 1600 and 1800 may run dome of .235
tall only.
S) Formula for cc’s- bore X bore X .7854 X stroke X 4 = cid then divide
cid into .061= cc’s. Tolerance is 5cc for wear.
T) May have E-Vac to header only NO VACCUM PUMPS.
U) May run electric water pump.
V) May run electric fuel pump.
W) Ignition – stock or Mel’s Ignition ONLY (NO BOOSTERS on
Ignition). (No Traction control allowed)(NO ECU Units) (NO MSD
Style)(NO MSD Style Ignition Boxes) X) Single
Ignition coil Only.
Y) Radiator must be mounted in front of engine.
Heads:

A) MUST HAVE BEEN AVAILABLE ON PRODUCTION CARS/
TRUCKS FROM OEM AUTOMOTIVE FACTORY. FROM THE
UNITED STATES OF AMERICA.
B) OEM may be changed from one size engine to another without
modification.
C) May have competition valve job with any angle or depth must not
touch bottom of valve boss.
D) All angles MUST be concentric with valve guide.
E) Any steel valve stock diameter may be undercut stem + .009
tolerances.
F) Valve stem must be stock diameter for year model of head. (No 7mm
valve stem in a Ford)
G) Double valve springs ok must be steel
H) Beehive valve springs ok must be steel
I) Any steel retainer
J) Lifter has to be stock diameter – solid ok
K) NO PORTING or POLISHING
L) NO “M13” head allowed

Intake:

A) MUST HAVE BEEN AVAILABLE ON PRODUCTION CARS/
TRUCKS FROM OEM AUTOMOTIVE FACTORY. FROM THE
UNIED STATES OF AMERICA.
B) OEM may change from one size engine to another without
modification unless stated.
C) Ford must run D4, D9 or E1 style intake. Anything other than listed
must be approved by MMSA/ Track Tech.
D) No fuel injection manifolds
E) Must be single carburetor.
F) No side draft intakes.
G) OEM style gasket only. (.07 max thickness)
H) May modify for carburetor but must be approved before race by
MMSA tech.
I) May bore straight down for clearance – NO TAPERING, RADIUS or
BLENDING.
J) Intake gasket is part of intake protest. Factory or OEM replacement
gasket.

Carburetor:

A) Stock carburetor or Holley 350 cfm (#7448 or 0-80787-1) or Holley
500 cfm #4412 must pass no go gauges.
B) Must have air horn with number.
C) Float bowl must face forward
D) May cut end of screws and have holes in butterflies
E) No thinning of shafts
F) No polishing or grinding
G) Spacer and adapter – any 1” max thickness together – NO
TOLERANCE. Spacer cannot protrude into intake.
2 gaskets @ .070 thickness maximum each.
H) May run billet metering block.
I) No interchanging of parts from a 350 to 500, or 500 to 350.

Camshaft:
A) Solid or Hydraulic NO ROLLERS
B) Maximum .425 lift at valve with .025 lash at valve for solid
C) Hydraulic .455 max lift checked at zero lash
D) Hydraulic lifter must collapse or be taken apart for inspection. Must be
fully functional lifter
E) No swapping of any lobes – must be in stock order
F) No roller or needle bearings stock type only coated ok

Flywheel & Clutch Assembly:

A) Aftermarket flywheel and clutch OK
B) Stock 11lbs minimum flywheel. NO WEIGHT BREAKS FOR
STOCK CLUTCH
C) Must have stock or stock replacement clutch and pressure plate if
claiming stock flywheel.
D) NO LIGHTENING OF STOCK PRESSURE PLATE
E) Only grinding, adding weight or drilled holes to pressure plate for
balancing. Drilled hole size is 7/16 diameter max (NOT all the way
around pressure plate). If there are holes all the way around pressure
plate it WILL be considered lightening.
F) Studs for pressure plate ok (must be a purchased stud, no custom
machined studs allowed)
G) Cannot relocate pressure plate bolt hole pattern

Transmission:
A) MUST BE STOCK with all working forward and reverse gears.
B) Cannot remove or lighten drive or reverse gears.
C) May remove speedometer gear only.
D) No polishing or coating.

Driveshaft:

A) Minimum of 1 ½” diameter
B) Must be steel
C) Must be painted white.

Header:

A) Spec Schoenfeld Fords may run # f-234v or # f-235v
B) Spec Schoenfeld Toyota may run # t-168 or stock manifold
C) These headers are the only ones allowed with SC type stock 4 rules.
D) May be coated or wrapped only must remain as it came from
Schoenfeld. (If wrapped you may be subject to unwrap for inspection)
E) Nothing should protrude into collector if so it WILL be subject to a
Disqualification.
F) OEM style gasket only factory replacement or from Schoenfeld.
G) If Schoenfeld doesn’t offer a header then a Stock Manifold MUST be
used. No homemade headers.

CC Weight’s, Weight Break’s and Penalties:
A) Toyota 2tc & 3tc must weigh 2000 lbs. minimum
B) Ford 2.0 must weigh 2150 lbs. minimum
C) Ford 2300 must weigh 2300 lbs. minimum, but only allowed a
max bore of .060.
D) Lightened Crankshaft +50lbs (in front of firewall)
E) CC’s and all weight breaks / penalties, and weight TOTAL MUST
be listed on each side of front fenders or hood. All breaks and
penalties should be told to MMSA tech at pre-race inspection for
documentation. If not listed or documented MMSA has the right
to DQ after qualifying or main feature.
G) Please pay attrition to A,B,&C. this is the new weights. NO BURN
OFF AFTER THE RACE
Scales:
MMSA will go by the scales that each track provides for everyone. It is the
responsibility of each track to provide scales and we have to use what is
provided. 5lb tolerance will be given.
BODY MEASUREMENTS:
**If You Are Caught Cheating For A Major Violation
such as porting, light crank not claimed, stroked
crankshaft, NOS, anything listed NOT Allowed, or
something without a doubt you knew was cheating you
will be stripped of all points, winnings and banned for
365 days or fined $$. Minor Offense you will forfeit all
points and winnings for that night and possible race
suspension & fines (MMSA discretion).**
IF IT DOES NOT SAY YOU CAN’T DO IT, IT

2021 Limited Late Model

2021 Limited Late Model Rules

Traction Control Devices:
1. All electronic and/or computerized wheel spin and/or ignition retardation and/or acceleration limiting and/or traction control devices of any type will not be permitted.
2. Adjustable ping control devices, dial a chip controls, timing controls and/or automated throttle controls will not be permitted.
3. Adjustable restrictor plates will not be permitted.
4. Remote control components of any-type will not be permitted.
5. Electronic devices designed for transmitting voice and/or data will not be permitted by anyone
6. Data acquisition systems and/or electronic or digital timing devices will not be permitted.
7. Raceceviers are required at all SLMSS events. The frequency will be announced during the driver’s meeting.
RESTARTS:
All restarts will be a double-file after the completion of the first lap of competition in any race, until 10 laps to go in the feature event. In all restarts lead lap cars will move to the front with lap down cars moving to the tail end of the field.
BODY:
A. ANY JIG OR CLIP CAR
B. Southern All Stars / Lucas Oil
C. ALL NON-APPROVED BODIES WILL BE ASSESSED WITH A MINIMUM OF 50 LB WEIGHT PENALTY.
ROLL CAGE:
A. ALL race cars MUST have boxed roll cage with 1 1/2 O.D. X 083 MIN.
B. MUST have 3 bars in the left door and 2 bars in the right door.
TIRES:
A. HOOSIER “1350” SPEC TIRE ONLY
B. Cutting/Grooving is permitted. There WILL NOT be weight penalty for Cutting/Grooving.
C. Nothing softer than a {Hoosier 1350} permitted!
TIRES: (CRATE CARS ONLY WITH SEALED “602” OR “604”)
A. May run Southeastern Late Model Sportsman Series Tire rule.
B. “602” May run {Hoosier- F.200} on all (4) corners.
C. “604” May run {Hoosier- F 200} on (3) corners. Must run {Hoosier 1350 or harder on right rear.
SPOILER:
A. 8″ height and 72” width
B. GM 602 and 604 CRATE engine may run a 12″ spoiler with a 150 lb. weight break.
C. No more than 3 spoiler supports may be used.
WHEELS:
A. ONLY aluminum or steel wheels permitted for competition. The maximum wheel width is 14″.
WHEELBASE:
A. 103 SIDE TO SIDE (1” VARIANCE)
FUEL:
A. RACING FUEL IS PERMITTED.
B. NO Alcohol, Ethanol, Methanol, Nitrous Oxide, Propylene Oxide or chemical additives!!
TRANSMISSION:
A. BERT and BRINN transmissions allowed.
B. ANY TYPE OF CLUTCH IS PERMITTED.
C. MUST have forward, reverse and equipped with a working self-starter. Direct Drive systems, of any kind, WILL NOT be permitted!!
CARBURETOR:
A. ONE FOUR BARREL is PERMITTED.
B. DOMINATOR CARBURETORS ARE NOT PERMITTED.
ENGINE:
A. 365 CUBIC INCHES MAXIMUM
B. CAST IRON BLOCK
C. HIGH PERFORMANCE CAM SHAFTS PERMITTED
D. ANY HYDRAULIC CAM PERMITTED
E. ROLLER CAM PERMITTED (MUST ADD 50 LBS)
F. ANY WET OIL PANS PERMITTED.
G. BALANCING PERMITTED.
H. ENGINE MAY BE CROSSED FROM ONE MANUFACTURER TO ANOTHER.
I. DRY SUMP PERMITTED.
J. FORD (S374) SEALED RACING ENGINE IS PERMITTED.
K. GM PERFORMANCE (CT525-376 Cubic Inch) SEALED RACE ENGINE IS PERMITTED.
ENGINE PLACEMENT:
A. ENGINE MUST NOT BE MORE THAN 2″ FROM CENTER OF FRAME RAIL.
B. ENGINE SETBACK WILL BE 6″ CENTER OF TOP BALL JOINT TO MOST FORWARD SPARK PLUG. (1/2” VARIANCE)
C. (CT525-376 Cubic Inch-Tolerance will be allowed).
HEADS:
A. (NO CC LIMIT) on cast iron heads. (Cast iron ONLY).
B. High Performance valve springs & retainers permitted.
C. Titanium retainers are permitted.
D. Needle bearing rocker arms are permitted.
E. CHEVY 23 DEGREE HEADS ONLY. ANGLE HEADS PERMITTED.
F. Screw in studs & guide plates are permitted.
G. 10 degree Ford heads permitted. (MUST ADD 50 LBS)
H. National late model sportsman Spec Heads permitted.
I. PORTING & POLISHING PERMITTED ON STEEL HEADS ONLY (NO Extra
Weight Required)
J. BRODIX HEADS PERMITTED.
The following part numbers ONLY:
FORD PART #(SPFO)
MOPAR PART #(SPMO)
CHEVY PART #(SPCH)
CHEVY PART #(SURP) (MUST ADD 60 LBS.)
INTAKE MANIFOLD:
A. ALUMINUM INTAKE PERMITTED.
WEIGHT RULE:
A. BASE WEIGHT 2400 lbs
B. 1 LB PER LAP BURN OFF
C. GM 602 CRATE (No weight rule)
D. GM 604 CRATE (No weight rule)
E. CT525 (2400 LBS) with 75lbs in front of motor plate 25/25/25
(SUMMARY OF RULES FOR STEEL HEAD AND ALUMINUM SPEC HEAD ENGINE RULES)
(ANY FORM OF GETTING TO 365 OR LESS IS OK)
If the driver claims Port Polish dry sump and roller, it is easy for Tech Inspector of said car makes weight.

In most cases the Tech Inspector can check these visibly, even the roller can be seen from oil returns in head.
If for some reason Tech Inspector is unable to see, the intake may have to be removed.
THE CT525 ENGINE…THE TECH INSPECTOR CAN CHECK VALVE SPRINGS & CUBIC INCH ONLY