Sponsored by Stifflers Suspension
NOTICE: Rules are subject to change without notice.
This class is designed for all naturally aspirated Modular motors in any Ford bodied car or truck. Nitrous, turbos, and superchargers are prohibited. This class will be run on a .400 Pro Tree. Non-class built naturally aspirated combinations will be allowed with the stipulation that if the Non-Class built car runs .2 faster than the number one qualified class built car (Class Built includes CS crossover cars) in qualifying or eliminations will result in the disqualification of that Non-Class built car.
NMRA COYOTE STOCK CROSSOVER
Rules will be the same as 2021 NMRA rules except stipulations listed below and Factory Stock tire rules allowed. Any fuel is permitted and any tune may be run.
FACTORY STOCK CROSSOVER
Rules will be the same as NMRA except the base weight will be 500lbs lighter, auto trans add 50lbs, Coyote Stock tire rules allowed and other stipulations listed below. Any fuel is permitted and any tune may be ran.
Participants must meet NHRA safety rules, see NHRA rule book. Seat belts, helmets, and any protective clothing will be checked for the correct safety rating and dates of certification.
Aftermarket hoods, bumpers, and trunk lids allowed. Must have stock doors and fenders. Hoods may be bolt on or lift off style. Hoods may not be modified for air intake purposes. Hood only allowed to be modified for clearance issues. Body component exemption: in an effort to allow crossover cars to get to a lower minimum weight if the crossover rules allow you to run lighter than your normal weight, all crossover class racers can run any light weight body components even if your sanctioning body does not allow it.
Vehicles may have aftermarket lightweight windows all around. (I.E. Optic Armor). Door and quarter windows must appear OEM. No exterior visible rivets, screws or fasteners of any kind. Door windows must be in door track.
Vehicle must have functioning taillights and head lights. Front headlight is not allowed to be removed for improved intake induction.
No requirements for the interior.
4.6L 2V, 3V and 4V. 5.0L Coyote and NMRA Coyote Stock engines.
Engine Max Cubic Inch Base Weight
4.6L 2V 289 CI 2675 lbs.
4.6L 3V 289 CI 2850 lbs.
4.6L 4V 289 CI 2925 lbs.
5.0L C 304 CI 3000 lbs.
NMRA CS N/A 2700 lbs.
Car weight is with the driver in the drivers seat. Weight will be rounded down to the closest 5lb increment. I.E if car weighs 2704lbs. it will be rounded down to 2700lbs.
Any OEM or aftermarket intake allowed. Intakes may be ported, welding/epoxying is prohibited. All incoming air must pass through an air filter. 4.6L 2v and 4v may be carburated/EFI all other combinations must be EFI. Any aftermarket CAI is allowed and mass air sensor may be no larger than 90mm except for the Coyote engine. Coyote engine allowed to run aftermarket intake tube with a max diameter of 112mm at the mass air sensor. Modified 5.0L (Non CS) allowed to run stock, GT350 or Boss intake manifolds at no weight penalty. Cobra Jet or other intakes (ie: Frankenstein) are levied a 25 pound penalty. F/S Coyote crossover cars may run Boss intake with 75 pound penalty.
One 750 CFM or smaller carburetor allowed.
Any fuel injectors allowed. Any Ford EFI allowed and Holley EFI allowed, add 100lbs to base weight for Holley EFI or other aftermarket EFI. Any tuner may be used with Ford EFI system.
All combos allowed to run any aftermarket throttle body, with the exception that a 4 barrel style throttle body is prohibited.
Any factory Ford produced cylinder head allowed on all combos. The 4.6L 2V may use the Trick Flow 2V cylinder head, add 150lbs to base weight. Porting allowed on all heads, welding can only be utilized for repairs. All cylinder heads limited to a 42CC combustion chamber and no smaller. Any valves are permitted except titanium valves are prohibited with any valve job permitted. No restrictions on valve springs and titanium valve locks and valve retainers may be used. Must run hydraulic lash adjusters. No restrictions on the followers.
All combos allowed .550 lift cams.
2v allowed .575 lift.
Any piston allowed, but must have three rings. Pistons may be gas ported.
No aluminum rods allowed. Rods must utilize a .866’ wrist pin. Rod must be 5.993” in length.
Must maintain stock stroke within .010”+/-. Main journal must be .010”+/- within the stock diameter. Rod journal to be no smaller than 2.0”.
No vacuum pumps allowed. Breathers allowed.
Wet sump allowed. Dry sump not allowed.
Must be SFI rated.
Any radiator and water pump allowed. All participants must run water, antifreeze is not allowed.
Any electrical or mechanical fuel pump allowed. Running fuel through any type of cooler is prohibited. Any fuel is permitted.
Coyote Stock and Factory Stock (Crossover entries) cars are only allowed tubular headers with a Max OD of 1.75”. Collector must be no larger than 3”. Mufflers NOT required. Exhaust max OD is 3.0”. Factory style N/A cars (not crossover or NMRA specific class cars) that do not fall under Crossover rules are allowed tubular headers as well with MAX OD of 2″. Collector must also be no larger than 3″ and no muffler required.
Any manual transmission allowed. Vertigate or H pattern shifter permitted. Automatic Transmission allowed and can deduct 50lbs from base weight.
Clutch and Flywheel must be SFI rated. Clutch minimum diameter is 10”. Clutch must be operated by clutch pedal which can be by cable or hydraulic.
Must be SFI rated.
Must be SFI rated.
Driveshaft may be steel or aluminum. Carbon fiber driveshaft prohibited.
Any rearend allowed and any gears allowed.
Coil Overs for the rear are not allowed except for cars with minitubs and ladder bars not allowed. The upper and lower control arms must mount to the body in the stock location. Relocation brackets can be used on the rear end side.
Any wheels are permitted. All entries allowed to have minitubs. Coil overs only allowed with minitubs.
Dot or bias ply racing slicks allowed. Radials allowed. Tires maximum width is 10.75” and maximum height is 28.0”.
Any aftermarket k-member allowed. Front wheels may not be staggered. Coil overs are allowed to be run in the front.
Any hydraulic brakes allowed.
No traction control devices allowed.
Towing is allowed to the staging lanes and after the car has been scaled. No towing across the scales. If car breaks on a pass is the only time a car can be towed to the scales