NORTHERN MICHIGAN SPEEDWAY
There will be NO WARNINGS given out for bad behavior such as; No throwing a fit on the racetrack or pit area NO jumping on the track officials, NMSW officials, scorers, flagman or track owner. No going to another pit to argue this includes driver, crew and anyone. You WILL NOT exit your car on the track.
The ABC Stock Car Division is designed to allow the competition of many different variations of stock cars which are currently racing at most local short tracks in Michigan and surrounding areas or have raced in the past.
The most common classes of cars are typically known as Sportsman, Street/Factory Stock, and Pure Stock. Other names for allowable classes to compete in this series might be Pro Stock, Super Stock, Factory Stock and Lead Sled.
This division is designed for current up to date race cars as well as what many consider to be old and outdated race cars.
The basic ABC Stock Car is V8 powered and rear wheel drive. Teching in this division is very easy since all areas of enforcement are clearly visible. Teardowns are not needed in this division. In addition to the requirement of V8 and RWD, there are some ultimate limits to what is allowed. Those limits are covered in these rules. Even though there is a very wide range of cars allowed in the ABC Division, the basic concept allows everyone to be competitive because of the feature race format. The generic ABC name is derived from the features that will be run, A-main, B-main, and C-main. The format allows for an unlimited number of cars to race since additional features can be added. The ABC concept allows everyone to be able to compete in a feature along with other drivers and cars of similar speed. There are no consi races or semi features. Everyone qualifies for a feature, the A-main, B-main, or C-main, depending on the qualifying times. (or D-main, E-main, etc)
THE MOST IMPORANT RULE IS THIS:
Any car that is deemed too radical and too much outside of the rules of typical stock car classes (by components or speed) that can be found competing at various other area tracks will not be allowed. With that said, the rules for this series are fairly open, but will be controlled by Northern Michigan Speedway officials if necessary. Interpretation of these rules is for the track officials and their decision is FINAL!
NOTE: RACECEIVERS MANDATORY! All drivers will be required to operate a raceceiver during all hotlap sessions, qualifying and race events. These devices will be used for on-track safety notice, disciplinary action and line-up procedures.
Raceceiver is to be tuned to 454.0000.
Any driver who does not have a Raceceiver on, or operational, will be instructed to leave the track. NO EXCEPTIONS!
Radios and mirrors ARE NOT permitted.
1. Factory production uni-body cars
2. Factory stock full frame cars.
3. Stock front sub frames from front of forward steering box mount rearward to 2” past rear lower control arm mount must remain stock with tubed center and rear sections.
Must have stock crossmember. Crossmember may be altered for fuel pump location.
ABSOLUTELY NO TUBE FRONT CLIPS, NO FABRICATED FRONT CLIPS.
4. Minimum wheel base is 102 inches
1. The most important rule here is that bodies MUST REMAIN AS STOCK APPEARING AS POSSIBLE. This means that cars must have all body panels (hood, roof, deck lid, fenders, doors, quarter panels, nose, and tail) that would be seen on any street legal production car/truck. Any cars that do not look like a stock car/truck will not be legal.
2. Rear panels must be fully enclosed from top of rear deck to bumper and from left quarter panel to right quarter panel.
3. Maximum overall width of any part of the car is 82 inches
4. Bodies may be factory stock production, fabricated stock appearing, or template style. Again the key point is to keep it stock appearing.
5. Bodies may be constructed of sheet metal, aluminum, or fiberglass, Plastic nose/tail bumper covers OK.
6. Nose Rule: Noses must be stock appearing or ABC template style. NO outlaw asphalt or dirt late model noses. Noses must be vertical, not laid back.
7. Tail Panel Rule: Tails must be stock appearing or ABC template style. Tails must match nose and roof. IE: truck to truck, car to car.
8. Roof must include A and B pillars of original type design for that roof and must be centered on the body. IE: Monte to Monte, Camaro to Camaro. No Outlaw teardrop roof with A or B pillar added.
1. Must have working brakes at all four wheels
2. In-cockpit brake adjusters are permitted
1. Must be production style cast iron block with cast iron heads. NO ALUMINUM HEADS.
2. GM Crate engine option for 350/350 hp. P.N.88958602 including spec. carburetor allowed.
3. Wet sump with internal oil pump only. NO DRY SUMP ENGINES
4. Any intake with any single 2bbl or 4bbl carburetor.
5. Engine set back to be measured at balljoint centerline closest to foreward most spark plug on engine. set back is not to exceed 4" rearward from the foreward most spark plug. engines in the 2.01" range to 4" range are to carry an additional 25# of ballast anchored with 1/2" bolts. chassis with more than 4" of set back are ineligible for competition.
6. No magneto ignitions.
7. Any stock manual or automatic transmission. Must have working reverse gear.
8. Bert/Brinn/other racing transmissions OK
1. Headers allowed
2. single or dual exhaust OK.
3. Mufflers are mandatory
4. Exhaust must exit behind driver and may not pass through driver compartment
5. Must be able to pass 100 decibel test.
1. Four post roll cage of quality construction/welding is required. Cage must be constructed of round tubing and may not be black pipe material. Must be welded, not bolted together
2. Center section of cage must have at least 4 door bars on left side and at least 3 on right side.
3. Left side of cage must have 1/8 inch minimum steel plate welded on. Plate must extend front upright to rear upright and from top door bar to frame rail
4. All bars within reach of any part of the drivers body must be padded with approved roll bar padding
5. Steering shafts must have a minimum of 2 U-Joints or collapsible steering column.
6. Aluminum racing seat properly mounted to roll cage is required
7. Properly mounted five point racing/safety harness is required. Harness must have a date tag and be no older than 5 years old
8. Properly mounted window net with quick release is required on the driver’s side
9. A racing fuel cell is mandatory, stock gas tanks are not allowed. If the bottom of the fuel cell is located below the bottom of the frame rails, it must be protected with a steel hoop properly welded to the frame behind the cell
10. Front and rear firewalls must be completely sealed from the driver's compartment
11. Battery must not be located in the driver's compartment
12. Master shut off switch to main battery cable must be placed near driver, preferably on the A pillar, for easy access by driver and safety crew is mandatory
13. Dbl layer fire suit or sgl layer fire suit and helmet required (see general rules)
14. Gloves, race shows, Neck brace/Hans device highly recommended.
15. Fully charged and properly mounted fire extinguisher is mandatory; 2.5 lbs. minimum.
1. Maximum spoiler dimensions are 6 ½” X 60”
2. Spoiler must be centered on rear deck.
3. Supports made of small tube or bar material ok, but must be no higher than the top of the spoiler.
4. No verticals allowed on spoilers, strut or strap style supports only.
1. Tubular upper control arms allowed.
2. Stock steel lower non-adjustable control arms only.
3. Screw jacks allowed.
4. No Coil over shocks allowed.
5. No rack and pinion steering allowed.
1. Upper and lower control arms may be adjustable.
2. Coil over shocks allowed. Shocks must be fully contained with no external components, lines, canisters, etc.
3. Screw jacks allowed.
4. Stock four link OK
5. Three link ok.
6. Quick change rear end cars will be considered as an A car division, ford 9 inch OK
7. All steering boxes factory mounted will be considered a B and a C Class.
A-Class: allowed to run Hooser D 800, Hooser 970, or American Racer 970. Visiting cars may run their track tires.
B-Class: American Racer 970, Visiting cars may run their track tires.
C-Class: American Racer 970, Visiting cars may run their track tires.
B AND C cars on any trophy night HAVE to run American Racer tires
1. Minimum weight, with driver in race trim, is 3200lbs for all cars.
2. Any added weight must be secured with two ½ inch bolts and may not extend below the bottom of the frame rails at any point. All weight must be painted white and have car number clearly marked on it
1. Steel made for racing wheels with a maximum width of 8 inches.
2. Wide 5 hubs OK.
3. One inch minimum lug nuts, studs must be flush with outer edge of lug nut
4. Car will be deemed unsafe for racing if more than one stud on any wheel is broken