FACTORYSUPERCARS
CLASSOVERVIEW
FactorySupercarsisaneliminatordesignedfortheDetroit-basedOEMcompaniestocompete
heads-upwiththemodernfactorydragracingcarsdubbedChevroletCOPOCamaro,Dodge
ChallengerDragPak,andFordCobraJetMustang.Thecarswilladheretothe“stock”type
limitations,runheads-upwithnobreakout,andlaunchoffaPro-treestart.Itistherebirthof
factorymusclecardragracingonthequarter-miledragstrip.
CLASSRULES
2008andNewer-ChevroletCOPO,FordCobraJetandDodgeDragPak.Differentyearengine
configurationsmaybetransplantedintodifferentyearbodiesaslongastheyarethesame
makeandmodel.Example:2016Copoenginemaybetransplantedintoa2014Camaro.Cross
breedingofbrandsisstrictlyprohibited.
Note:Thissetofclassrulesispresentedtoallcompetitorsundertheassumptionthatany
modificationsnotspecificallywrittenwithintheserulesshallbedeemedillegal,unlessthe
competitorhastheexpressedwrittenconsentfromtheNMCATechDirector.
RACINGFORMAT
Thisclasswillbeanallrunheads-upfield,NHRAProStyleLadder,ona.400ProTree,Autostart.
CLASSDESIGNATION=FS
ENGINE
POWERADDER
BASEWEIGHT
Ford5.0L
2.9LWhipple 3550
Ford5.4L
2.3LTVS
3300
GM5.3L
2.9LWhipple 3300
GM5.7L
2.9LWhipple 3550
Mopar5.7L 2.9LWhipple 3550
Note:
AllabovelistedenginecombinationswillbebasedoffoftheNHRA’sStockEliminatorengine
specificationschart.Factorybuiltcarsor‘’clones’’arepermitted.
REQUIREMENTS&SPECIFICATIONS
ENGINE:1
BLOCK
AnyFactoryOEMorNMCAapproveddirectreplacementengineblockispermitted.Maximum
cylinderboreoverstockis.080-iches.Boreswillbemeasuredatthetopofthecylinderwhere
ringwearisnotevident.Cylinderblocksmaybesleeved.
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HARMONICBALANCER
SFISpec18.1balancerisrequired.
ENGINEMOUNTS&LOCATION
Engine/motorplatesandmid-platesarepermitted.Enginemustbeinthestocklocation.Engine
blockandcylinderheadsmaynotbeincontactwiththeenginefirewall.
CRANKSHAFT
StockorNMCAacceptedaftermarketcrankshaftsarepermitted.Aftermarketcrankshaftmust
retainOEMconfiguration(i.e.,billets,knifeedging,etc.prohibited).Stroketoleranceis+/-.015inch.Lightningofcrankshaft(otherthannormalbalancing)isprohibited.
CONNECTINGRODS
StockorNMCAacceptedaftermarketconnectingrodsarepermitted.Lengthmustbestock+/-
.025-inchcentertocenter.Theuseofconnectingrodandcrankspacerbearingisprohibited.
Thecombinedweightofthepiston,pin,ringsandconnectingmustbeequaltoorgreaterthan
theNHRAstockreplacementminimumassemblyweight.
PISTONS&PINS
StockorNMCAacceptedaftermarketpistonsandpinsarepermitted.Aftermarketpistonsmay
beforgedorcastandmustretainas-castoras-forgedheadconfiguration.Pistonmustthesame
overalldesignwiththesamedomeand/ordishconfigurationasthefactoryOEMpiston.The
pistonsmustretainthecorrectnumber,location,depthandwidthofringgroves.Anysteel
wristpinofOEMdiameterpermitted.Anymodificationstothepistonand/orpinare
prohibited.
PISTONSRINGS
StockorNMCAacceptedaftermarketpistonringsarepermitted.Aftermarketpistonringsmust
retainfactoryOEMdimensions.
TIMINGCHAINS
AftermarkettimingcoversarepermittedaslongasfactoryOEMtypetiminggearsandchains
areused.Aftermarketgeardrivesand/orbeltsareprohibited.
CAMSHAFT
Camshaftmustmaintainstockliftforyear,makeandmodelofcarbeingused.Aftermarketor
factoryliftersarepermitted.
LIFTERS/LASHADJUSTERS
Aftermarketorfactorylifters/lashadjustersarepermitted.
VALVESPRINGS
Anyvalvespringsarepermitted.
CYLINDERHEADS
Allcylindersheadsmustbeunmodifiedandmeetalldimensionsforyear,makeandmodel
beingclaimed.Thisincludesintakeportrunners,exhaustportrunnersandcombustion
chambers.Regardlessofpouredvolumesanymodificationstothecylinderheadsarestrictly
prohibited.
INTAKEMANIFOLD
IntakemanifoldmustbethefactoryOEMmanifoldfortheyear,makeandmodelofengine
claimed.Anyalterationsand/ormodificationstotheintakemanifoldareprohibited.
SUPERCHARGER
Whipple2.9Lor2.3LTVSaretheonlysuperchargerspermitted.Throttlebodiesmustremainin
thestocklocationforyear,makeandmodelofenginebeingclaimed.Modifyingthe
superchargerisprohibited.
INTERCOOLING
FactoryOEMintercoolersandintercoolertanksmustberetainforyear,makeandmodelbeing
claimed.
OILINGSYSTEM
Anyoilpanpermitted.StockoraftermarketOEMtypeoilpumpispermitted.Oilpumplocation,
oilpumpdrive,andcompleteoilingsystemmustremainasoriginallyproduced.Theuseofan
accumulatorispermitted.
COOLINGSYSTEM
Fullsizestocktyperadiatorforyear,makeandmodelbeingclaimedisrequired.Aluminum
radiatorsarepermitted.Anycoolingfansarepermitted.AnyaftermarketfactoryOEMtype
waterpumpispermitted.Waterpumpmustboltontothefactorylocationwithoutany
modifications.
EXHAUSTSYSTEM
Anytubularheadersarepermitted.
FUELSYSTEM
Anyelectricfuelpumppermitted.Electricfuelpumpmustshutoffwithvehicle’signitionswitch
ormastercut-offswitch.Fuellinesmaybechangedtoanysizelinewithin-linefuelfiltersand
fuelregulatorspermitted.Factorygastanksandaftermarketfuelcellsarepermitted.When
usingafuelcell,arearfirewallofaminimum.032inchaluminumor.024inchsteelmustbe
installedtototallysealdrivercompartmentfromfuelcell.
EFISYSTEM
OEMoranycommerciallyavailablemass-producedOEMtypeaftermarketfuel-injectionsystem
permitted.Anysize/typeoffuelinjectorpermittedwithamaximumof8injectorslocatedin
thestocklocation.
THROTTLEBODY
Throttlebodymustbethecorrectsizeforyear,make,makeandmodelofenginebeing
claimed.
THROTTLELINKAGE
Throttlecontrolmustbeoperatedbythedriver’sfoot
FUEL
Gasolineasoutlinedhereistheonlyacceptablefuelforuseinthiseliminator.TheNMCA
reservestherighttocheckgasolineatanytimeduringcompetition.Gasoline,asdefinedbythe
NHRArulebook,isamixtureofhydrocarbonsonly.Theaveragedielectricconstant(D.C.)forthe
hydrocarbonsthatcompromisesgasolineis2.025.Thisisdefinedasareadingof‘’0’’onthe
fuel-checkmeter.NMRAallowsnogreaterreadingthana‘’0’’onthefuelcheckmeter.Failure
topassfuelcheckisgroundsfordisallowanceoftherunduringcompetitionanddisqualification
fromtheeventduringeliminations
DRIVETRAIN:2
CLUTCH
ClutchandflywheelmeetingSFISpec1.1or1.2(2-discmaximum)ismandatory.Steelflywheel
shieldmeetingSFISpec6.1or9.1mandatory.Flywheelshieldcannotbemodifiedforclutch
adjustmentand/orcooling.
MANUALTRANSMISSION
OEMorNMCAacceptedaftermarkettransmissionshavingsamenumberofforwardspeedsas
originalandreversemaybeused.Allgearchangesmustbeadirectactionfromthedriver.
Pneumatic,electric,hydraulic,etc.shiftersareprohibited.Floorshiftconversionskitsare
permitted.Clutch-lesstransmissionsareprohibited.Clutchmustbeusedtochangegearsina
conventionalmanner.
AUTOMATICTRANSMISSION
Anymodeltransmission,samemakeascar,withamaximumofthreeforwardspeeds(unless
OEMequippedwithmoreforwardspeeds)permitted.Anygearchangemustoccurasaresult
ofaninternalfunctionofthetransmissionorfromadirectactionofthedriver.Pneumatic,
electric,hydraulic,etc.shiftersareprohibited.Lockuptorqueconvertorsareprohibitedunless
OEMequippedwithalockuptorqueconvertorandmustbeusedwiththeOEMtransmission.
DRIVELINE
Anysteeloraluminumdriveshaftisrequired.Carbonfiberdriveshaftisprohibited.Driveshaft
safetyloopisrequired.
REAREND
AnyOEMautomotivetyperearendpermitted.
BRAKES,STERRING&SUSPENSION:3
BRAKES
Frontandrearhydraulicbrakesarerequired.Carbonbrakesareprohibited.Automatedbrakes
areprohibited.Theapplicationandreleaseofthebrakesmustbeafunctionofthedriver.Dual
reservoirmastercylinderisrequired.Line-lockispermittedonlyonthefrontwheelsusingone
line-lockbuttonandsolenoid.Anyotherelectrical,pneumatic,hydraulic,etc.switchinbraking
systemisprohibited.
SHOCKS/STRUTS
NopneumaticorelectronicshockspermittedunlesssuchitemsareFactoryOEMequipped.No
additionalreservoirspermitted.
FRONTSUSPENSION
Completestockfrontsuspensionsystemsasproducedbymanufacturerforyear,make,model
beingused.AftermarkettierodendswithHeimjointsarepermitted.
REARSUSPENSION
FactoryOEMrearsuspensionforyear,makeandmodelbeingusedismandatory.Cars
equippedwithcoilsmayberelocated.Swaybarsarepermitted.
WHEELIEBARS
Wheeliebarsarepermittedandcannotbelongerthan48-inchesortotherearbumper,
whicheverisgreater.
FRAME:4
FRAME
Frontandrearframerailsmustremainunalteredandinthestocklocations.Rearframerails
maybenotchedfortireclearanceonly.Notchingrearframerailsforrearendclearance/ride
heightpurposesisprohibited.Subframeconnectorsarepermitted.
WHEELBASE
Entriesmustretainstockwheelbasedimensionsof+or–1inch.Maximumwheelbasevariation
fromlefttorightis1inch.
GROUNDCLEARANCE
Aminimumof4inchesfromthefrontofthevehicleto12inchesbehindfrontspindle
centerlineismandatory.Aminimumof3inchesfortherestofthevehicleismandatory(except
foroilpanandexhaustheaders).
TIRES&WHEELS:5
TIRES
Theuseof30-inchestallby9-incheswideorsmallerslicksisrequired.Reartiresmaynot
exceed10-incheswideregardlessofwear.Tiretreadmaynotextendoutsideofthefender.
WHEELS
Aftermarketracingwheelspermitted.
INTERIOR:6
UPHOLSTERY
Musthavefullfactorytypeupholstery,includingcarpet,doorpanels,headliner,andfactory
dash.Driver’sseatisrequiredandmountedinthestocklocation.Aftermarketfrontseatsare
permittedandmustbeupholstered.Rearseat,heaterandA/Ccontrolsmayberemoved.
STEERINGCOLUMN/WHEEL
OEMorstocktypesteeringcolumnrequired.Steeringcolumnmusthaveafactoryappearance.
Removablesteeringwheelispermitted.
PEDALS&PEDALLOCATION
Stocktypepedalsandlinkageinthefactorylocationarerequired.
BODY:7
BODY
Bodymustretainoriginalappearancesandprofilesforyear,makeandmodelbeingused.OEM
bodyshellmustbeintact.Lightweightbodypanelsarerestrictedtohood,bumpersanddecklid/truck-lidorhatch.Hoodmaybealift-offstyleanddeck-lid/trunk-lidorhatchmustbe
hinged.Liftoffstyledeck-lid/trunk-lidorhatchisprohibited.Alterationsoraerodynamic
modificationsareprohibited.
HOODSCOOPS
Theuseofaftermarketforwardfacinghoodscoopsisprohibited.FactoryOEMhoodscoops
arepermitted.
COWLAREA
CompleteOEMcowlisrequired.
GRILLE
Grillemustbefullproductionformake,modelandyearbeingclaimed.Coveringinfrontofor
behindthegrilleisprohibited.
BUMPERS
Nobodycomponents,bumperadd-ons,sillplates,chinspoilers,bodykits,licenseplateframes,
etc.arepermittedtobeaddedtothenoseofthevehicle.
FIREWALL
Stock,unalteredfirewallisrequired.Anyholesinfirewallmustbesealedtoseparatetheengine
bayfrominterior.
FENDERSPLASHPANS
Full,factoryOEMoraftermarketinnerfendersarerequired.
WINDSHIELD&WINDOWS
AllFactoryOEMglassisrequiredandmustbeoperational.
FLOOR
Completestockfloor,inthestocklocationismandatory.Anyholesinfloorand/ortransmission
tunnelmustbesealed.
WHEELWELLS
Factorywheelwells/tubsarerequired.
WING/SPOILERS
FactoryOEMrearwing/spoilerarepermitted.Anyadjustmentstothewing/spoilerduringarun
areprohibited.
STREETEQUIPMENT
Headlightsandoperationaltaillights/brakelightsarerequired.
APPEARANCE
Allcarsincompetitionmustbepaintedorwrapped.Advertisinggraphicsarepermittedonthe
body.InordertobeeligiblefortheNMCAofficialcontingencyprogram,allcontingency
sponsors’decalsmustbeeasilyvisibleandlocatedontheoutsideofthevehicle.Failuretodo
socanresultinthedriverforfeitingallclaimedcontingenciesforthatparticularevent.The
NMRAdoesrequireallentriestorunthefollowingdecals:
1. NMCAWindshieldBanner:Decalneedstobelocatedonthetopofthewindshieldor
justabovethewindshieldlocatedonthebody.
2. NMCADragRacingSeries:Decals(2)mustbelocatedoneachsideofvehicle.Eitheron
thesidewindowsordecalscanbelocatedonthebodyrightbesidethesidewindows.
3. ClassSponsor:Decalmustbelocatedonthepassenger’ssidelowerportionofthe
windshield.
4. VPRacingFuels:OfficialFueldecals(2)required.Mustbelocatedoneachsideof
vehicle.(Inacontingencydecalmanner)
5. AerospaceWinnersCircle:Decals(2)mustbeprominentlydisplayedoneachsideof
vehicle.Failuretodosocanresultinthewinningdriverforfeitinghis/hersWinner’s
Trophy&Payout.
6. Class&CompetitionNumbers:Numbersmustbeeasilyvisible/legibleandlocatedon
thefront,back,andbothsidewindows
ELECTRICAL:8
BATTERIES/CHARGINGSYSTEM
Batterymayberelocatedandmustbeanautomotivetype
DISTRIBUTOR
Antbatteryoperated,stocktypeignitionispermitted.Cranktriggersystemsprohibitedunless
OEMdistributor-lessignition.Distributor-lessignitionmustretainOEMnumberofcoils.
IGNITION
Two-steppermitted.Twostepmustbefoot-activatedthroughbrakepedal,clutchpedal,or
pressureswitch.Handreleaseisprohibited.Allwiringassociatedwiththeignitionsystemmust
befullyvisibleandtraceable.
MASTERCUTOFF
Amastercutoffswitchismandatoryonallvehicleswithabatterylocatedinthetrunk.
STARTER
Aftermarketstarters,instocklocationpermitted.
SUPPORTGROUPS:9
COMPUTER/DATARECORDERS
OriginalOEMcomputermaybereplacedwithanaftermarketcomputer.Datarecordersare
permitted.
BRACKETRACINGAIDS
Theuseofanybracketracingsaidssuchasopticalsensors,delayboxes,shutterboxes,throttle
stops,etc.areprohibited.Theuseofanydevice(electricalormechanical)thatallowsadriver
toascertainthepositionoftheirvehicletothestartinglineisprohibited.
TOWVEHICLES
Theuseoftowvehiclesispermitted.
CREWMEMBERS
Eachcrewmembermusthavetheproperstartinglinecredentialsandmustwerematching
attire.
DRIVER:10
DRIVER
Thedriverwheninthevehicle,fromthereadylineuntilthevehicleissafelystoppedonthe
returnroad,isrequiredtohaveallsafetyrestraintsystems(includingthehelmet)onandbe
securelyfastenedinthevehicleatalltimes
CRENDENTIALS
AValidstateorgovernmentissueddriver’slicensebeyondalearner/spermitlevelis
mandatoryforcarsrunning10.00orslower.AvalidNHRAcompetitionlicenseismandatoryfor
carsrunning9.99orquicker,ataNHRAMemberTrack.AvalidNHRAoranIHRAcompetition
licenseismandatoryatanIHRAMemberTrack.
Note:Itisultimatelythecompetitor’sresponsibilitytofamiliarizethemselveswiththeNMCA
classrequirementsaswellasallNHRAsafetyrequirements.Thecompetitoragreestheybear
theultimateresponsibilitywhenitcomestosafetyandhowitcomplieswiththeNMCAand
NHRArulebooks.Thecompetitoralsoagreesthatnooneelseotherthanthecompetitorisin
thebestpositiontoknowabouthowtheirparticularracecarhasbeenconstructedandhowto
safelyoperateit.